./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 19:29:36,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:29:36,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:29:36,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:29:36,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:29:36,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:29:36,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:29:36,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:29:36,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:29:36,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:29:36,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:29:36,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:29:36,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:29:36,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:29:36,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:29:36,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:29:36,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:29:36,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:29:36,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:29:36,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:29:36,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:29:36,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:29:36,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:29:36,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:29:36,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:29:36,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:29:36,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:29:36,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:29:36,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:29:36,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:29:36,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:29:36,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:29:36,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:29:36,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:29:36,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:29:36,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:29:36,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:29:36,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:29:36,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:29:36,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:29:36,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:29:36,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:29:36,375 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:29:36,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:29:36,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:29:36,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:29:36,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:29:36,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:29:36,377 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:29:36,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:29:36,378 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:29:36,378 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:29:36,378 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:29:36,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:29:36,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:29:36,379 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:29:36,379 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:29:36,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:29:36,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:29:36,379 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:29:36,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:29:36,380 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:29:36,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:29:36,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:29:36,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:29:36,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:29:36,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:29:36,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:29:36,382 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:29:36,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:29:36,382 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:29:36,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:29:36,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:29:36,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:29:36,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:29:36,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:29:36,383 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:29:36,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:29:36,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:29:36,384 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:29:36,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:29:36,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:29:36,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:29:36,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2022-11-16 19:29:36,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:29:36,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:29:36,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:29:36,711 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:29:36,712 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:29:36,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-11-16 19:29:36,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data/3e75953d9/1a30f5ab442640ecabb2afb7019d2b3e/FLAG78526270f [2022-11-16 19:29:37,343 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:29:37,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-11-16 19:29:37,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data/3e75953d9/1a30f5ab442640ecabb2afb7019d2b3e/FLAG78526270f [2022-11-16 19:29:37,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data/3e75953d9/1a30f5ab442640ecabb2afb7019d2b3e [2022-11-16 19:29:37,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:29:37,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:29:37,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:29:37,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:29:37,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:29:37,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:29:37" (1/1) ... [2022-11-16 19:29:37,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7572a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:37, skipping insertion in model container [2022-11-16 19:29:37,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:29:37" (1/1) ... [2022-11-16 19:29:37,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:29:37,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:29:37,950 WARN L229 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[1997,2010] [2022-11-16 19:29:37,955 WARN L229 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[2391,2404] [2022-11-16 19:29:38,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:29:38,020 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:29:38,034 WARN L229 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[1997,2010] [2022-11-16 19:29:38,036 WARN L229 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[2391,2404] [2022-11-16 19:29:38,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:29:38,110 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:29:38,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38 WrapperNode [2022-11-16 19:29:38,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:29:38,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:29:38,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:29:38,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:29:38,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,182 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-11-16 19:29:38,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:29:38,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:29:38,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:29:38,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:29:38,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,220 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:29:38,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:29:38,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:29:38,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:29:38,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (1/1) ... [2022-11-16 19:29:38,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:29:38,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:29:38,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:29:38,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:29:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:29:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 19:29:38,325 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 19:29:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-16 19:29:38,325 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-16 19:29:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:29:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:29:38,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:29:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:29:38,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:29:38,449 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:29:38,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:29:38,911 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:29:39,069 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:29:39,069 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 19:29:39,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:39 BoogieIcfgContainer [2022-11-16 19:29:39,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:29:39,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:29:39,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:29:39,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:29:39,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:29:37" (1/3) ... [2022-11-16 19:29:39,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268c5c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:29:39, skipping insertion in model container [2022-11-16 19:29:39,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:38" (2/3) ... [2022-11-16 19:29:39,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268c5c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:29:39, skipping insertion in model container [2022-11-16 19:29:39,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:39" (3/3) ... [2022-11-16 19:29:39,081 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2022-11-16 19:29:39,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:29:39,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 19:29:39,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:29:39,155 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5714b916, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:29:39,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 19:29:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 37 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:29:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:29:39,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:39,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:29:39,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:29:39,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash 9600708, now seen corresponding path program 1 times [2022-11-16 19:29:39,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:39,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282121908] [2022-11-16 19:29:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:29:39,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 19:29:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 19:29:39,338 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 19:29:39,340 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 19:29:39,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 19:29:39,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 19:29:39,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:29:39,350 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 19:29:39,354 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:29:39,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:29:39 BoogieIcfgContainer [2022-11-16 19:29:39,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:29:39,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:29:39,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:29:39,379 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:29:39,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:39" (3/4) ... [2022-11-16 19:29:39,385 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 19:29:39,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:29:39,386 INFO L158 Benchmark]: Toolchain (without parser) took 1694.19ms. Allocated memory is still 121.6MB. Free memory was 85.4MB in the beginning and 88.5MB in the end (delta: -3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:29:39,387 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:29:39,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.57ms. Allocated memory is still 121.6MB. Free memory was 85.1MB in the beginning and 92.6MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 19:29:39,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.77ms. Allocated memory is still 121.6MB. Free memory was 92.6MB in the beginning and 91.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:29:39,390 INFO L158 Benchmark]: Boogie Preprocessor took 41.18ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 89.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:29:39,394 INFO L158 Benchmark]: RCFGBuilder took 846.94ms. Allocated memory is still 121.6MB. Free memory was 89.3MB in the beginning and 53.2MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-16 19:29:39,396 INFO L158 Benchmark]: TraceAbstraction took 301.74ms. Allocated memory is still 121.6MB. Free memory was 52.8MB in the beginning and 89.3MB in the end (delta: -36.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:29:39,396 INFO L158 Benchmark]: Witness Printer took 6.80ms. Allocated memory is still 121.6MB. Free memory was 89.3MB in the beginning and 88.5MB in the end (delta: 806.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:29:39,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.57ms. Allocated memory is still 121.6MB. Free memory was 85.1MB in the beginning and 92.6MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.77ms. Allocated memory is still 121.6MB. Free memory was 92.6MB in the beginning and 91.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.18ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 89.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 846.94ms. Allocated memory is still 121.6MB. Free memory was 89.3MB in the beginning and 53.2MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 301.74ms. Allocated memory is still 121.6MB. Free memory was 52.8MB in the beginning and 89.3MB in the end (delta: -36.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.80ms. Allocated memory is still 121.6MB. Free memory was 89.3MB in the beginning and 88.5MB in the end (delta: 806.2kB). 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.399f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 19:29:39,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 19:29:41,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:29:41,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:29:41,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:29:41,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:29:41,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:29:41,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:29:41,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:29:41,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:29:41,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:29:41,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:29:41,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:29:41,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:29:41,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:29:41,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:29:41,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:29:41,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:29:41,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:29:41,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:29:41,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:29:41,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:29:41,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:29:41,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:29:41,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:29:41,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:29:41,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:29:41,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:29:41,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:29:41,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:29:41,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:29:41,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:29:41,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:29:41,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:29:41,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:29:41,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:29:41,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:29:41,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:29:41,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:29:41,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:29:41,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:29:41,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:29:41,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 19:29:41,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:29:41,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:29:41,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:29:41,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:29:41,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:29:41,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:29:41,877 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:29:41,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:29:41,877 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:29:41,878 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:29:41,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:29:41,879 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:29:41,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:29:41,881 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:29:41,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:29:41,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:29:41,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:29:41,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:29:41,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:29:41,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:29:41,882 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 19:29:41,882 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 19:29:41,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:29:41,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:29:41,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:29:41,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:29:41,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:29:41,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 19:29:41,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:29:41,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:29:41,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:29:41,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:29:41,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:29:41,885 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 19:29:41,885 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 19:29:41,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:29:41,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:29:41,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 19:29:41,886 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2022-11-16 19:29:42,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:29:42,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:29:42,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:29:42,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:29:42,340 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:29:42,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-11-16 19:29:42,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data/0152a31e6/245b193d8b8241bc90b9764112a4c266/FLAG5b89b2980 [2022-11-16 19:29:42,969 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:29:42,970 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2022-11-16 19:29:42,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data/0152a31e6/245b193d8b8241bc90b9764112a4c266/FLAG5b89b2980 [2022-11-16 19:29:43,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/data/0152a31e6/245b193d8b8241bc90b9764112a4c266 [2022-11-16 19:29:43,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:29:43,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:29:43,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:29:43,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:29:43,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:29:43,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b368c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43, skipping insertion in model container [2022-11-16 19:29:43,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:29:43,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:29:43,570 WARN L229 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[1997,2010] [2022-11-16 19:29:43,576 WARN L229 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[2391,2404] [2022-11-16 19:29:43,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:29:43,659 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:29:43,674 WARN L229 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[1997,2010] [2022-11-16 19:29:43,676 WARN L229 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_14040ed6-7cbf-4782-bc96-dd5d19b133a8/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c[2391,2404] [2022-11-16 19:29:43,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:29:43,717 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:29:43,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43 WrapperNode [2022-11-16 19:29:43,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:29:43,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:29:43,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:29:43,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:29:43,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,756 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-11-16 19:29:43,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:29:43,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:29:43,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:29:43,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:29:43,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:29:43,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:29:43,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:29:43,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:29:43,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (1/1) ... [2022-11-16 19:29:43,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:29:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:29:43,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:29:43,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:29:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:29:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 19:29:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 19:29:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 19:29:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-16 19:29:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-16 19:29:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:29:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:29:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:29:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:29:44,010 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:29:44,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:29:46,524 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:29:46,532 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:29:46,532 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 19:29:46,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:46 BoogieIcfgContainer [2022-11-16 19:29:46,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:29:46,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:29:46,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:29:46,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:29:46,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:29:43" (1/3) ... [2022-11-16 19:29:46,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70575c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:29:46, skipping insertion in model container [2022-11-16 19:29:46,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:29:43" (2/3) ... [2022-11-16 19:29:46,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70575c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:29:46, skipping insertion in model container [2022-11-16 19:29:46,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:29:46" (3/3) ... [2022-11-16 19:29:46,543 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2022-11-16 19:29:46,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:29:46,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 19:29:46,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:29:46,613 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73429185, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:29:46,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 19:29:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:29:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:29:46,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:46,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:46,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:29:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-16 19:29:46,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:29:46,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857022032] [2022-11-16 19:29:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:46,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:29:46,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:29:46,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:29:46,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 19:29:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:29:47,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 19:29:47,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:29:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:29:47,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:29:47,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:29:47,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857022032] [2022-11-16 19:29:47,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857022032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:29:47,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:29:47,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:29:47,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598690106] [2022-11-16 19:29:47,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:29:47,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:29:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:29:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:29:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:29:47,454 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:47,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:47,513 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-11-16 19:29:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:29:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 19:29:47,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:47,525 INFO L225 Difference]: With dead ends: 121 [2022-11-16 19:29:47,525 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 19:29:47,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:29:47,536 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:47,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:29:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 19:29:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-16 19:29:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 19:29:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-11-16 19:29:47,598 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-11-16 19:29:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:47,599 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-11-16 19:29:47,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:29:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-11-16 19:29:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:29:47,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:47,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:47,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:29:47,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:29:47,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:29:47,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:47,821 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-16 19:29:47,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:29:47,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190510754] [2022-11-16 19:29:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:47,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:29:47,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:29:47,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:29:47,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 19:43:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:39,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:43:39,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:44:13,830 WARN L233 SmtUtils]: Spent 10.47s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 19:44:47,664 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-16 19:44:49,712 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-16 19:44:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:44:49,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:44:49,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:44:49,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190510754] [2022-11-16 19:44:49,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190510754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:49,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:49,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:44:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061899668] [2022-11-16 19:44:49,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:49,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 19:44:49,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:44:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 19:44:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=13, Unknown=7, NotChecked=8, Total=42 [2022-11-16 19:44:49,717 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:44:56,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 19:44:56,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:56,853 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2022-11-16 19:44:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:44:56,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 19:44:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:56,855 INFO L225 Difference]: With dead ends: 56 [2022-11-16 19:44:56,855 INFO L226 Difference]: Without dead ends: 51 [2022-11-16 19:44:56,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=19, Invalid=18, Unknown=9, NotChecked=10, Total=56 [2022-11-16 19:44:56,857 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:56,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 172 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 1 Unknown, 141 Unchecked, 2.7s Time] [2022-11-16 19:44:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-16 19:44:56,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-16 19:44:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 19:44:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-11-16 19:44:56,867 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 7 [2022-11-16 19:44:56,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:56,867 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-16 19:44:56,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:44:56,868 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-11-16 19:44:56,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 19:44:56,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:56,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:44:56,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:44:57,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:44:57,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:57,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:57,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1078958274, now seen corresponding path program 1 times [2022-11-16 19:44:57,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:44:57,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601524013] [2022-11-16 19:44:57,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:57,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:44:57,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:44:57,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:44:57,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 19:44:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:57,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:44:57,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:44:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:44:57,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:44:57,712 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:44:57,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601524013] [2022-11-16 19:44:57,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601524013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:57,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:57,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 19:44:57,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150433005] [2022-11-16 19:44:57,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:57,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:44:57,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:44:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:44:57,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:44:57,716 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:44:58,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:58,394 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-16 19:44:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:44:58,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-11-16 19:44:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:58,398 INFO L225 Difference]: With dead ends: 100 [2022-11-16 19:44:58,399 INFO L226 Difference]: Without dead ends: 72 [2022-11-16 19:44:58,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:44:58,401 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 20 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:58,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 425 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:44:58,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-16 19:44:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2022-11-16 19:44:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.297872340425532) internal successors, (61), 49 states have internal predecessors, (61), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-16 19:44:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2022-11-16 19:44:58,417 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 32 [2022-11-16 19:44:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:58,418 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2022-11-16 19:44:58,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:44:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2022-11-16 19:44:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 19:44:58,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:58,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:44:58,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:44:58,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:44:58,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash 452521591, now seen corresponding path program 1 times [2022-11-16 19:44:58,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:44:58,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866516023] [2022-11-16 19:44:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:58,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:44:58,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:44:58,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:44:58,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 19:44:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:58,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:44:58,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:44:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:44:59,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:44:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:44:59,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:44:59,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866516023] [2022-11-16 19:44:59,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866516023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:44:59,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1596313576] [2022-11-16 19:44:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:59,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:44:59,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:44:59,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:44:59,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-16 19:44:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:59,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:44:59,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:45:00,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:45:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:45:00,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1596313576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:45:00,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768237097] [2022-11-16 19:45:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:00,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:00,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:00,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:45:00,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 19:45:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:00,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:45:00,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:45:00,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:45:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:45:01,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768237097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:45:01,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:45:01,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 9 [2022-11-16 19:45:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189791794] [2022-11-16 19:45:01,073 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:45:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 19:45:01,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:45:01,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 19:45:01,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:45:01,080 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:45:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:02,045 INFO L93 Difference]: Finished difference Result 122 states and 160 transitions. [2022-11-16 19:45:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 19:45:02,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-16 19:45:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:02,049 INFO L225 Difference]: With dead ends: 122 [2022-11-16 19:45:02,049 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 19:45:02,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:45:02,051 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 27 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:02,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 492 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 19:45:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 19:45:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2022-11-16 19:45:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 56 states have internal predecessors, (69), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-16 19:45:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-11-16 19:45:02,069 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 36 [2022-11-16 19:45:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:02,070 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-11-16 19:45:02,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:45:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-11-16 19:45:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 19:45:02,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:02,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:02,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:02,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:02,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:02,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 19:45:02,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1328087799, now seen corresponding path program 1 times [2022-11-16 19:45:02,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:45:02,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078282521] [2022-11-16 19:45:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:02,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:45:02,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:45:02,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:45:02,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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 [2022-11-16 19:45:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:02,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:45:02,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:45:03,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:45:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:45:03,675 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:45:03,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078282521] [2022-11-16 19:45:03,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078282521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:45:03,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [207097347] [2022-11-16 19:45:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:03,676 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:45:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:45:03,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:45:03,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-16 19:45:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:03,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:45:03,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 19:45:04,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:04,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [207097347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:04,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:45:04,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8] total 12 [2022-11-16 19:45:04,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649828716] [2022-11-16 19:45:04,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:04,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 19:45:04,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:45:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 19:45:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-16 19:45:04,430 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 19:45:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:05,559 INFO L93 Difference]: Finished difference Result 115 states and 149 transitions. [2022-11-16 19:45:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 19:45:05,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-11-16 19:45:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:05,562 INFO L225 Difference]: With dead ends: 115 [2022-11-16 19:45:05,562 INFO L226 Difference]: Without dead ends: 92 [2022-11-16 19:45:05,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-16 19:45:05,564 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 20 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:05,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 516 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 19:45:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-16 19:45:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2022-11-16 19:45:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 62 states have internal predecessors, (76), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-16 19:45:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2022-11-16 19:45:05,580 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 40 [2022-11-16 19:45:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:05,581 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2022-11-16 19:45:05,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 19:45:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2022-11-16 19:45:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 19:45:05,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:05,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:05,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-11-16 19:45:05,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:05,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:45:05,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash 78255138, now seen corresponding path program 2 times [2022-11-16 19:45:05,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:45:05,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141894102] [2022-11-16 19:45:05,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:45:05,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:45:05,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:45:06,000 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:45:06,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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 [2022-11-16 19:45:06,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 19:45:06,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:45:06,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:45:06,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 19:45:06,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:06,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:45:06,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141894102] [2022-11-16 19:45:06,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141894102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:06,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:06,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:45:06,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565819634] [2022-11-16 19:45:06,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:06,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:45:06,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:45:06,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:45:06,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:45:06,579 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:45:06,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:06,992 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2022-11-16 19:45:06,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:45:06,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-16 19:45:06,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:06,999 INFO L225 Difference]: With dead ends: 99 [2022-11-16 19:45:06,999 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 19:45:07,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:45:07,001 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 9 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:07,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 333 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-16 19:45:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 19:45:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2022-11-16 19:45:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.265625) internal successors, (81), 67 states have internal predecessors, (81), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (16), 11 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-16 19:45:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2022-11-16 19:45:07,019 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 40 [2022-11-16 19:45:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:07,020 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2022-11-16 19:45:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:45:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2022-11-16 19:45:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 19:45:07,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:07,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:07,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:07,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:45:07,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash 135513440, now seen corresponding path program 1 times [2022-11-16 19:45:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:45:07,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772605632] [2022-11-16 19:45:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:07,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:45:07,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:45:07,237 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:45:07,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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 [2022-11-16 19:45:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:07,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:45:07,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 19:45:07,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:07,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:45:07,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772605632] [2022-11-16 19:45:07,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772605632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:07,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:07,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 19:45:07,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615028137] [2022-11-16 19:45:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:07,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:45:07,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:45:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:45:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:45:07,734 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:45:08,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:08,039 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2022-11-16 19:45:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:45:08,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-16 19:45:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:08,041 INFO L225 Difference]: With dead ends: 95 [2022-11-16 19:45:08,041 INFO L226 Difference]: Without dead ends: 93 [2022-11-16 19:45:08,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:45:08,043 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 9 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:08,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 309 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-11-16 19:45:08,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-16 19:45:08,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2022-11-16 19:45:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 63 states have (on average 1.253968253968254) internal successors, (79), 65 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-16 19:45:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2022-11-16 19:45:08,060 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 40 [2022-11-16 19:45:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:08,061 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2022-11-16 19:45:08,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:45:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2022-11-16 19:45:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 19:45:08,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:08,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:08,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:08,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:45:08,279 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash 463941786, now seen corresponding path program 1 times [2022-11-16 19:45:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:45:08,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049070257] [2022-11-16 19:45:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:08,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:45:08,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:45:08,281 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:45:08,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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 [2022-11-16 19:45:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:08,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:45:08,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:45:08,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:45:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:45:09,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:45:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049070257] [2022-11-16 19:45:09,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049070257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:45:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2013401179] [2022-11-16 19:45:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:09,605 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:45:09,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:45:09,606 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:45:09,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 19:45:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:09,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:45:09,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:45:09,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:45:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:45:10,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2013401179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:45:10,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026960452] [2022-11-16 19:45:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:10,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:45:10,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:45:10,540 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:45:10,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 19:45:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:10,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:45:10,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:45:10,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:45:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:45:11,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026960452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:45:11,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:45:11,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 9 [2022-11-16 19:45:11,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399867633] [2022-11-16 19:45:11,465 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:45:11,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 19:45:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:45:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 19:45:11,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:45:11,479 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:45:12,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:45:12,552 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2022-11-16 19:45:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:45:12,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-11-16 19:45:12,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:45:12,555 INFO L225 Difference]: With dead ends: 130 [2022-11-16 19:45:12,555 INFO L226 Difference]: Without dead ends: 119 [2022-11-16 19:45:12,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:45:12,557 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 48 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:45:12,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 491 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 19:45:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-16 19:45:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2022-11-16 19:45:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 76 states have internal predecessors, (89), 15 states have call successors, (15), 7 states have call predecessors, (15), 10 states have return successors, (21), 14 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-16 19:45:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2022-11-16 19:45:12,596 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 45 [2022-11-16 19:45:12,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:45:12,597 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2022-11-16 19:45:12,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:45:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2022-11-16 19:45:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 19:45:12,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:45:12,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:45:12,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:12,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:13,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-16 19:45:13,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 19:45:13,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:45:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:45:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1165006364, now seen corresponding path program 1 times [2022-11-16 19:45:13,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:45:13,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878293941] [2022-11-16 19:45:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:45:13,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:45:13,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:45:13,206 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:45:13,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14040ed6-7cbf-4782-bc96-dd5d19b133a8/bin/utaipan-Xvt2sAort0/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 [2022-11-16 19:45:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:45:13,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 19:45:13,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:45:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:45:14,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:45:14,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:45:14,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878293941] [2022-11-16 19:45:14,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878293941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:45:14,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:45:14,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 19:45:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215006532] [2022-11-16 19:45:14,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:45:14,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 19:45:14,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:45:14,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 19:45:14,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 19:45:14,331 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5)