./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:42:41,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:42:41,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:42:41,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:42:41,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:42:41,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:42:41,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:42:41,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:42:41,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:42:41,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:42:41,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:42:41,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:42:41,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:42:41,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:42:41,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:42:41,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:42:41,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:42:41,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:42:41,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:42:41,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:42:41,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:42:41,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:42:41,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:42:41,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:42:41,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:42:41,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:42:41,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:42:41,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:42:41,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:42:41,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:42:41,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:42:41,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:42:41,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:42:41,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:42:41,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:42:41,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:42:41,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:42:41,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:42:41,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:42:41,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:42:41,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:42:41,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-20 23:42:41,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:42:41,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:42:41,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:42:41,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:42:41,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:42:41,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:42:41,677 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:42:41,677 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:42:41,677 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:42:41,678 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:42:41,678 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:42:41,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:42:41,678 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:42:41,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:42:41,679 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:42:41,679 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:42:41,679 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:42:41,679 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:42:41,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:42:41,681 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:42:41,681 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:42:41,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:42:41,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:42:41,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:42:41,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:42:41,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:42:41,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:42:41,682 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 23:42:41,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:42:41,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:42:41,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:42:41,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:42:41,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:42:41,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:42:41,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:42:41,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:42:41,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:42:41,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:42:41,685 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:42:41,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:42:41,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:42:41,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:42:41,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:42:41,686 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a [2021-11-20 23:42:41,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:42:42,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:42:42,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:42:42,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:42:42,043 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:42:42,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-11-20 23:42:42,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/data/73c771571/dd0af901944b4579879dc72ba59ce19b/FLAG31d589add [2021-11-20 23:42:42,764 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:42:42,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-11-20 23:42:42,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/data/73c771571/dd0af901944b4579879dc72ba59ce19b/FLAG31d589add [2021-11-20 23:42:43,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/data/73c771571/dd0af901944b4579879dc72ba59ce19b [2021-11-20 23:42:43,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:42:43,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:42:43,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:42:43,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:42:43,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:42:43,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4d27e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43, skipping insertion in model container [2021-11-20 23:42:43,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:42:43,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:42:43,313 WARN L230 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_8a634799-8e42-412f-a633-71a78b3e7e45/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2021-11-20 23:42:43,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:42:43,403 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:42:43,417 WARN L230 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_8a634799-8e42-412f-a633-71a78b3e7e45/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2021-11-20 23:42:43,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:42:43,491 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:42:43,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43 WrapperNode [2021-11-20 23:42:43,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:42:43,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:42:43,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:42:43,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:42:43,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,538 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-11-20 23:42:43,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:42:43,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:42:43,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:42:43,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:42:43,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:42:43,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:42:43,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:42:43,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:42:43,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (1/1) ... [2021-11-20 23:42:43,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:42:43,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:43,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:42:43,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:42:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:42:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:42:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-20 23:42:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-20 23:42:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:42:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:42:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-20 23:42:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-20 23:42:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:42:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:42:43,843 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:42:43,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:42:44,217 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:42:44,294 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:42:44,294 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 23:42:44,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:44 BoogieIcfgContainer [2021-11-20 23:42:44,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:42:44,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:42:44,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:42:44,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:42:44,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:42:43" (1/3) ... [2021-11-20 23:42:44,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f947a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:44, skipping insertion in model container [2021-11-20 23:42:44,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:43" (2/3) ... [2021-11-20 23:42:44,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f947a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:44, skipping insertion in model container [2021-11-20 23:42:44,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:44" (3/3) ... [2021-11-20 23:42:44,308 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-11-20 23:42:44,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:42:44,315 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-20 23:42:44,388 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:42:44,398 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:42:44,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-20 23:42:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 59 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 23:42:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:42:44,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:44,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:44,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:44,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1880218650, now seen corresponding path program 1 times [2021-11-20 23:42:44,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:44,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233051632] [2021-11-20 23:42:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:44,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:44,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:44,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233051632] [2021-11-20 23:42:44,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233051632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:44,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:44,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:42:44,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629731796] [2021-11-20 23:42:44,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:44,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:42:44,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:44,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:42:44,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:42:44,670 INFO L87 Difference]: Start difference. First operand has 72 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 59 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:44,745 INFO L93 Difference]: Finished difference Result 140 states and 178 transitions. [2021-11-20 23:42:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:42:44,749 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:42:44,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:44,762 INFO L225 Difference]: With dead ends: 140 [2021-11-20 23:42:44,763 INFO L226 Difference]: Without dead ends: 66 [2021-11-20 23:42:44,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:42:44,776 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:44,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:42:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-20 23:42:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-11-20 23:42:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 55 states have internal predecessors, (65), 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) [2021-11-20 23:42:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2021-11-20 23:42:44,860 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 8 [2021-11-20 23:42:44,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:44,861 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2021-11-20 23:42:44,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2021-11-20 23:42:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:42:44,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:44,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:44,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:42:44,867 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:44,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1879141883, now seen corresponding path program 1 times [2021-11-20 23:42:44,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:44,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028095381] [2021-11-20 23:42:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:44,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:45,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:45,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028095381] [2021-11-20 23:42:45,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028095381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:45,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:45,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:42:45,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104339724] [2021-11-20 23:42:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:45,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:42:45,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:42:45,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:42:45,010 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:45,168 INFO L93 Difference]: Finished difference Result 168 states and 210 transitions. [2021-11-20 23:42:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:42:45,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:42:45,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:45,172 INFO L225 Difference]: With dead ends: 168 [2021-11-20 23:42:45,173 INFO L226 Difference]: Without dead ends: 104 [2021-11-20 23:42:45,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:45,177 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 53 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:45,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 192 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-20 23:42:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-11-20 23:42:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 84 states have internal predecessors, (107), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2021-11-20 23:42:45,198 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 8 [2021-11-20 23:42:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:45,198 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2021-11-20 23:42:45,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:45,199 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2021-11-20 23:42:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 23:42:45,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:45,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:45,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:42:45,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1787898238, now seen corresponding path program 1 times [2021-11-20 23:42:45,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:45,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497747268] [2021-11-20 23:42:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:45,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:45,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:45,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497747268] [2021-11-20 23:42:45,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497747268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:45,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:45,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:42:45,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919534523] [2021-11-20 23:42:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:45,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:42:45,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:42:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:45,285 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:45,515 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2021-11-20 23:42:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:42:45,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 23:42:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:45,519 INFO L225 Difference]: With dead ends: 112 [2021-11-20 23:42:45,519 INFO L226 Difference]: Without dead ends: 110 [2021-11-20 23:42:45,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:42:45,523 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 66 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:45,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 256 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:42:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-20 23:42:45,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2021-11-20 23:42:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.5) internal successors, (108), 86 states have internal predecessors, (108), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2021-11-20 23:42:45,559 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 12 [2021-11-20 23:42:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:45,560 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2021-11-20 23:42:45,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2021-11-20 23:42:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:42:45,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:45,562 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:45,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:42:45,563 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash 617305324, now seen corresponding path program 1 times [2021-11-20 23:42:45,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:45,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979725202] [2021-11-20 23:42:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:45,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:45,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:45,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979725202] [2021-11-20 23:42:45,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979725202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:45,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:45,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:42:45,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759963488] [2021-11-20 23:42:45,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:45,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:42:45,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:45,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:42:45,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:45,649 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:42:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:45,833 INFO L93 Difference]: Finished difference Result 135 states and 170 transitions. [2021-11-20 23:42:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:42:45,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 23:42:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:45,836 INFO L225 Difference]: With dead ends: 135 [2021-11-20 23:42:45,839 INFO L226 Difference]: Without dead ends: 132 [2021-11-20 23:42:45,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:42:45,842 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 59 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:45,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 236 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-20 23:42:45,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 119. [2021-11-20 23:42:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.4838709677419355) internal successors, (138), 106 states have internal predecessors, (138), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 153 transitions. [2021-11-20 23:42:45,884 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 153 transitions. Word has length 14 [2021-11-20 23:42:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:45,885 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 153 transitions. [2021-11-20 23:42:45,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:42:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 153 transitions. [2021-11-20 23:42:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:42:45,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:45,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:45,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:42:45,888 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:45,888 INFO L85 PathProgramCache]: Analyzing trace with hash 409729571, now seen corresponding path program 1 times [2021-11-20 23:42:45,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:45,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903109741] [2021-11-20 23:42:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:45,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:45,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:45,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903109741] [2021-11-20 23:42:45,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903109741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:45,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:45,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:42:45,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812961974] [2021-11-20 23:42:45,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:45,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:42:45,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:42:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:45,956 INFO L87 Difference]: Start difference. First operand 119 states and 153 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:46,122 INFO L93 Difference]: Finished difference Result 225 states and 283 transitions. [2021-11-20 23:42:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:42:46,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 23:42:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:46,130 INFO L225 Difference]: With dead ends: 225 [2021-11-20 23:42:46,131 INFO L226 Difference]: Without dead ends: 138 [2021-11-20 23:42:46,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:42:46,144 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 76 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:46,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 258 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-20 23:42:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2021-11-20 23:42:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 96 states have (on average 1.46875) internal successors, (141), 109 states have internal predecessors, (141), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 156 transitions. [2021-11-20 23:42:46,177 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 156 transitions. Word has length 13 [2021-11-20 23:42:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:46,178 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 156 transitions. [2021-11-20 23:42:46,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 156 transitions. [2021-11-20 23:42:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:42:46,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:46,179 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:46,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:42:46,180 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1956595917, now seen corresponding path program 1 times [2021-11-20 23:42:46,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:46,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396992915] [2021-11-20 23:42:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:46,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:42:46,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:46,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396992915] [2021-11-20 23:42:46,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396992915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:46,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:46,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:42:46,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823715535] [2021-11-20 23:42:46,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:46,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:42:46,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:42:46,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:42:46,264 INFO L87 Difference]: Start difference. First operand 122 states and 156 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:42:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:46,306 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2021-11-20 23:42:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:42:46,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 23:42:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:46,310 INFO L225 Difference]: With dead ends: 128 [2021-11-20 23:42:46,310 INFO L226 Difference]: Without dead ends: 127 [2021-11-20 23:42:46,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:42:46,318 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:46,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 134 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:42:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-20 23:42:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2021-11-20 23:42:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 94 states have (on average 1.446808510638298) internal successors, (136), 106 states have internal predecessors, (136), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 151 transitions. [2021-11-20 23:42:46,345 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 151 transitions. Word has length 15 [2021-11-20 23:42:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:46,346 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 151 transitions. [2021-11-20 23:42:46,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:42:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 151 transitions. [2021-11-20 23:42:46,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:42:46,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:46,356 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:46,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:42:46,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1801937109, now seen corresponding path program 1 times [2021-11-20 23:42:46,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:46,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125808998] [2021-11-20 23:42:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:46,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:46,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:46,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125808998] [2021-11-20 23:42:46,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125808998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:46,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179792292] [2021-11-20 23:42:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:46,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:46,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:46,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:42:46,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:42:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:46,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:42:46,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:46,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:42:46,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179792292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:46,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:42:46,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-20 23:42:46,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271488408] [2021-11-20 23:42:46,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:46,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:42:46,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:42:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:42:46,622 INFO L87 Difference]: Start difference. First operand 119 states and 151 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:46,708 INFO L93 Difference]: Finished difference Result 141 states and 178 transitions. [2021-11-20 23:42:46,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:42:46,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 23:42:46,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:46,711 INFO L225 Difference]: With dead ends: 141 [2021-11-20 23:42:46,711 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 23:42:46,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:42:46,727 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 8 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:46,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 205 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 23:42:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 117. [2021-11-20 23:42:46,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 92 states have (on average 1.434782608695652) internal successors, (132), 104 states have internal predecessors, (132), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2021-11-20 23:42:46,741 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 14 [2021-11-20 23:42:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:46,743 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2021-11-20 23:42:46,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:42:46,743 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2021-11-20 23:42:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:42:46,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:46,758 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:46,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:46,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 23:42:46,960 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:46,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1412379412, now seen corresponding path program 1 times [2021-11-20 23:42:46,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:46,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294361436] [2021-11-20 23:42:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:46,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:42:47,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:47,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294361436] [2021-11-20 23:42:47,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294361436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:47,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:47,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:42:47,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326329683] [2021-11-20 23:42:47,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:47,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:42:47,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:47,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:42:47,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:47,010 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:42:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:47,119 INFO L93 Difference]: Finished difference Result 134 states and 163 transitions. [2021-11-20 23:42:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:42:47,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-20 23:42:47,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:47,123 INFO L225 Difference]: With dead ends: 134 [2021-11-20 23:42:47,123 INFO L226 Difference]: Without dead ends: 132 [2021-11-20 23:42:47,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:42:47,125 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 47 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:47,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 235 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-20 23:42:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-11-20 23:42:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 95 states have (on average 1.4105263157894736) internal successors, (134), 107 states have internal predecessors, (134), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2021-11-20 23:42:47,154 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 16 [2021-11-20 23:42:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:47,154 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2021-11-20 23:42:47,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:42:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2021-11-20 23:42:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:42:47,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:47,156 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:47,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:42:47,157 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1726361951, now seen corresponding path program 1 times [2021-11-20 23:42:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:47,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391520849] [2021-11-20 23:42:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:47,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:42:47,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:47,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391520849] [2021-11-20 23:42:47,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391520849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:47,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:47,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:42:47,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871272763] [2021-11-20 23:42:47,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:47,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:42:47,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:47,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:42:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:47,206 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:42:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:47,288 INFO L93 Difference]: Finished difference Result 132 states and 162 transitions. [2021-11-20 23:42:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:42:47,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-20 23:42:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:47,290 INFO L225 Difference]: With dead ends: 132 [2021-11-20 23:42:47,290 INFO L226 Difference]: Without dead ends: 130 [2021-11-20 23:42:47,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:42:47,298 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 53 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:47,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 231 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-20 23:42:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2021-11-20 23:42:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 91 states have (on average 1.3956043956043955) internal successors, (127), 101 states have internal predecessors, (127), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 142 transitions. [2021-11-20 23:42:47,315 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 142 transitions. Word has length 20 [2021-11-20 23:42:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:47,315 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 142 transitions. [2021-11-20 23:42:47,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:42:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 142 transitions. [2021-11-20 23:42:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 23:42:47,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:47,317 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:47,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:42:47,318 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:47,319 INFO L85 PathProgramCache]: Analyzing trace with hash 253870546, now seen corresponding path program 1 times [2021-11-20 23:42:47,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:47,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509385437] [2021-11-20 23:42:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:47,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:42:47,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509385437] [2021-11-20 23:42:47,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509385437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:47,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:47,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:42:47,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649566877] [2021-11-20 23:42:47,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:47,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:42:47,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:47,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:42:47,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:42:47,369 INFO L87 Difference]: Start difference. First operand 114 states and 142 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:42:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:47,422 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2021-11-20 23:42:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:42:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-20 23:42:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:47,430 INFO L225 Difference]: With dead ends: 137 [2021-11-20 23:42:47,430 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 23:42:47,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:42:47,432 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:47,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 137 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:42:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 23:42:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2021-11-20 23:42:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 98 states have internal predecessors, (122), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2021-11-20 23:42:47,446 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 19 [2021-11-20 23:42:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:47,447 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2021-11-20 23:42:47,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 23:42:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2021-11-20 23:42:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 23:42:47,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:47,449 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:47,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:42:47,449 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2063908551, now seen corresponding path program 1 times [2021-11-20 23:42:47,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:47,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588354503] [2021-11-20 23:42:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:47,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:42:47,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:47,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588354503] [2021-11-20 23:42:47,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588354503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:47,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:47,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:42:47,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346981229] [2021-11-20 23:42:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:47,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:42:47,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:42:47,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:47,541 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:42:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:47,663 INFO L93 Difference]: Finished difference Result 122 states and 149 transitions. [2021-11-20 23:42:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:42:47,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-20 23:42:47,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:47,668 INFO L225 Difference]: With dead ends: 122 [2021-11-20 23:42:47,669 INFO L226 Difference]: Without dead ends: 120 [2021-11-20 23:42:47,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:42:47,671 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:47,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 230 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-20 23:42:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2021-11-20 23:42:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.3764705882352941) internal successors, (117), 93 states have internal predecessors, (117), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 23:42:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2021-11-20 23:42:47,688 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 22 [2021-11-20 23:42:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:47,689 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2021-11-20 23:42:47,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:42:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2021-11-20 23:42:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 23:42:47,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:47,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:47,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:42:47,691 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:47,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1816925235, now seen corresponding path program 1 times [2021-11-20 23:42:47,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:47,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798304717] [2021-11-20 23:42:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:47,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 23:42:47,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:47,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798304717] [2021-11-20 23:42:47,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798304717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:47,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:47,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 23:42:47,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838477696] [2021-11-20 23:42:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:47,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:42:47,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:42:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:42:47,829 INFO L87 Difference]: Start difference. First operand 106 states and 132 transitions. Second operand has 10 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:42:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:47,953 INFO L93 Difference]: Finished difference Result 160 states and 196 transitions. [2021-11-20 23:42:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:42:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-11-20 23:42:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:47,955 INFO L225 Difference]: With dead ends: 160 [2021-11-20 23:42:47,956 INFO L226 Difference]: Without dead ends: 118 [2021-11-20 23:42:47,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:42:47,958 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 9 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:47,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 532 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:42:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-20 23:42:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2021-11-20 23:42:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.3636363636363635) internal successors, (120), 98 states have internal predecessors, (120), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-20 23:42:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 139 transitions. [2021-11-20 23:42:47,972 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 139 transitions. Word has length 24 [2021-11-20 23:42:47,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:47,972 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 139 transitions. [2021-11-20 23:42:47,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:42:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 139 transitions. [2021-11-20 23:42:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:42:47,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:47,974 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:47,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:42:47,975 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:47,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1306727004, now seen corresponding path program 1 times [2021-11-20 23:42:47,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465063873] [2021-11-20 23:42:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:47,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 23:42:48,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:48,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465063873] [2021-11-20 23:42:48,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465063873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:48,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364401397] [2021-11-20 23:42:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:48,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:48,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:48,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:42:48,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:42:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:48,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 23:42:48,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:42:48,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:42:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 23:42:48,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364401397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:42:48,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1523238163] [2021-11-20 23:42:48,963 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-20 23:42:48,963 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:42:48,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:42:48,974 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:42:48,975 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:42:51,490 INFO L197 IcfgInterpreter]: Interpreting procedure addflt with input of size 15 for LOIs [2021-11-20 23:42:51,753 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-20 23:42:52,649 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:42:54,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1523238163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:54,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:42:54,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [9, 10, 8] total 35 [2021-11-20 23:42:54,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224850555] [2021-11-20 23:42:54,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:54,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 23:42:54,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 23:42:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:42:54,830 INFO L87 Difference]: Start difference. First operand 112 states and 139 transitions. Second operand has 19 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:42:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:56,588 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2021-11-20 23:42:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 23:42:56,589 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-11-20 23:42:56,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:56,591 INFO L225 Difference]: With dead ends: 203 [2021-11-20 23:42:56,591 INFO L226 Difference]: Without dead ends: 201 [2021-11-20 23:42:56,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 23:42:56,593 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 103 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:56,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 351 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 23:42:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-20 23:42:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 160. [2021-11-20 23:42:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 137 states have internal predecessors, (168), 17 states have call successors, (17), 6 states have call predecessors, (17), 13 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2021-11-20 23:42:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 215 transitions. [2021-11-20 23:42:56,619 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 215 transitions. Word has length 28 [2021-11-20 23:42:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:56,619 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 215 transitions. [2021-11-20 23:42:56,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:42:56,619 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 215 transitions. [2021-11-20 23:42:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 23:42:56,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:56,621 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 23:42:56,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 23:42:56,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 23:42:56,835 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:42:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:56,835 INFO L85 PathProgramCache]: Analyzing trace with hash 367976846, now seen corresponding path program 1 times [2021-11-20 23:42:56,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:56,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573746181] [2021-11-20 23:42:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:56,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 23:42:57,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:57,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573746181] [2021-11-20 23:42:57,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573746181] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:57,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219114625] [2021-11-20 23:42:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:57,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:57,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:57,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:42:57,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:42:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:57,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 23:42:57,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:42:57,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:42:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 23:42:57,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219114625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:42:57,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [975052637] [2021-11-20 23:42:57,587 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-20 23:42:57,588 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:42:57,588 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:42:57,588 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:42:57,589 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:42:59,420 INFO L197 IcfgInterpreter]: Interpreting procedure addflt with input of size 8 for LOIs [2021-11-20 23:42:59,666 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-20 23:43:00,648 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:02,584 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:02,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:02,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2021-11-20 23:43:02,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797627536] [2021-11-20 23:43:02,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:02,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 23:43:02,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 23:43:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 23:43:02,587 INFO L87 Difference]: Start difference. First operand 160 states and 215 transitions. Second operand has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 23:43:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:02,994 INFO L93 Difference]: Finished difference Result 316 states and 410 transitions. [2021-11-20 23:43:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:43:02,996 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2021-11-20 23:43:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:02,998 INFO L225 Difference]: With dead ends: 316 [2021-11-20 23:43:02,998 INFO L226 Difference]: Without dead ends: 170 [2021-11-20 23:43:03,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 23:43:03,001 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 34 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:03,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 634 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:43:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-20 23:43:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 144. [2021-11-20 23:43:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.3653846153846154) internal successors, (142), 118 states have internal predecessors, (142), 18 states have call successors, (18), 8 states have call predecessors, (18), 14 states have return successors, (27), 17 states have call predecessors, (27), 16 states have call successors, (27) [2021-11-20 23:43:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 187 transitions. [2021-11-20 23:43:03,024 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 187 transitions. Word has length 30 [2021-11-20 23:43:03,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:03,024 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 187 transitions. [2021-11-20 23:43:03,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 23:43:03,025 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 187 transitions. [2021-11-20 23:43:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 23:43:03,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:03,026 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 23:43:03,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:03,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 23:43:03,251 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:43:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:03,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1350222734, now seen corresponding path program 2 times [2021-11-20 23:43:03,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:03,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754433990] [2021-11-20 23:43:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:03,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 23:43:03,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754433990] [2021-11-20 23:43:03,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754433990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:03,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:03,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:43:03,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723633508] [2021-11-20 23:43:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:03,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:43:03,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:43:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:43:03,330 INFO L87 Difference]: Start difference. First operand 144 states and 187 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:43:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:03,429 INFO L93 Difference]: Finished difference Result 218 states and 282 transitions. [2021-11-20 23:43:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:43:03,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-11-20 23:43:03,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:03,434 INFO L225 Difference]: With dead ends: 218 [2021-11-20 23:43:03,434 INFO L226 Difference]: Without dead ends: 160 [2021-11-20 23:43:03,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:43:03,440 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 7 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:03,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 493 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-20 23:43:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2021-11-20 23:43:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.3653846153846154) internal successors, (142), 118 states have internal predecessors, (142), 18 states have call successors, (18), 8 states have call predecessors, (18), 14 states have return successors, (27), 17 states have call predecessors, (27), 16 states have call successors, (27) [2021-11-20 23:43:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 187 transitions. [2021-11-20 23:43:03,474 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 187 transitions. Word has length 30 [2021-11-20 23:43:03,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:03,475 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 187 transitions. [2021-11-20 23:43:03,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:43:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 187 transitions. [2021-11-20 23:43:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 23:43:03,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:03,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 23:43:03,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 23:43:03,478 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:43:03,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:03,478 INFO L85 PathProgramCache]: Analyzing trace with hash 880708351, now seen corresponding path program 1 times [2021-11-20 23:43:03,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:03,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105662437] [2021-11-20 23:43:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:03,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 23:43:03,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105662437] [2021-11-20 23:43:03,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105662437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800708283] [2021-11-20 23:43:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:03,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:03,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:03,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:43:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:03,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:43:03,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 23:43:03,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:38,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800708283] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:38,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1377010633] [2021-11-20 23:43:38,407 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-20 23:43:38,407 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:38,408 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:38,408 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:38,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:39,672 INFO L197 IcfgInterpreter]: Interpreting procedure addflt with input of size 36 for LOIs [2021-11-20 23:43:40,310 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-20 23:43:41,280 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:43,633 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:43,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:43:43,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-11-20 23:43:43,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451273136] [2021-11-20 23:43:43,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:43,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:43:43,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:43,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:43:43,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=594, Unknown=12, NotChecked=0, Total=702 [2021-11-20 23:43:43,637 INFO L87 Difference]: Start difference. First operand 144 states and 187 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:43:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:43,907 INFO L93 Difference]: Finished difference Result 220 states and 290 transitions. [2021-11-20 23:43:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:43:43,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2021-11-20 23:43:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:43,910 INFO L225 Difference]: With dead ends: 220 [2021-11-20 23:43:43,910 INFO L226 Difference]: Without dead ends: 217 [2021-11-20 23:43:43,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=108, Invalid=692, Unknown=12, NotChecked=0, Total=812 [2021-11-20 23:43:43,912 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 111 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:43,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 669 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:43:43,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-20 23:43:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 192. [2021-11-20 23:43:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.3873239436619718) internal successors, (197), 156 states have internal predecessors, (197), 26 states have call successors, (26), 10 states have call predecessors, (26), 16 states have return successors, (39), 25 states have call predecessors, (39), 24 states have call successors, (39) [2021-11-20 23:43:43,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 262 transitions. [2021-11-20 23:43:43,939 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 262 transitions. Word has length 34 [2021-11-20 23:43:43,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:43,939 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 262 transitions. [2021-11-20 23:43:43,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:43:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 262 transitions. [2021-11-20 23:43:43,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 23:43:43,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:43,942 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 23:43:43,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:44,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 23:43:44,146 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:43:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:44,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1985902463, now seen corresponding path program 2 times [2021-11-20 23:43:44,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:44,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666622456] [2021-11-20 23:43:44,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:44,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 23:43:44,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:44,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666622456] [2021-11-20 23:43:44,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666622456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:44,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:44,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:43:44,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520518271] [2021-11-20 23:43:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:44,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:43:44,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:43:44,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:43:44,431 INFO L87 Difference]: Start difference. First operand 192 states and 262 transitions. Second operand has 9 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:43:44,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:44,606 INFO L93 Difference]: Finished difference Result 266 states and 361 transitions. [2021-11-20 23:43:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:43:44,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-11-20 23:43:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:44,610 INFO L225 Difference]: With dead ends: 266 [2021-11-20 23:43:44,610 INFO L226 Difference]: Without dead ends: 265 [2021-11-20 23:43:44,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:43:44,612 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 85 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:44,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 617 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-20 23:43:44,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 194. [2021-11-20 23:43:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 143 states have (on average 1.3846153846153846) internal successors, (198), 158 states have internal predecessors, (198), 26 states have call successors, (26), 10 states have call predecessors, (26), 17 states have return successors, (44), 25 states have call predecessors, (44), 24 states have call successors, (44) [2021-11-20 23:43:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 268 transitions. [2021-11-20 23:43:44,655 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 268 transitions. Word has length 34 [2021-11-20 23:43:44,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:44,657 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 268 transitions. [2021-11-20 23:43:44,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:43:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 268 transitions. [2021-11-20 23:43:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 23:43:44,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:44,660 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2021-11-20 23:43:44,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:43:44,660 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:43:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1615116395, now seen corresponding path program 1 times [2021-11-20 23:43:44,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:44,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232298941] [2021-11-20 23:43:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:44,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 23:43:44,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:44,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232298941] [2021-11-20 23:43:44,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232298941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:44,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300393451] [2021-11-20 23:43:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:44,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:44,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:44,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:44,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:43:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:44,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 23:43:44,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:43:45,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 23:43:46,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300393451] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:46,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1346562681] [2021-11-20 23:43:46,042 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2021-11-20 23:43:46,043 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:46,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:46,044 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:46,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:48,471 INFO L197 IcfgInterpreter]: Interpreting procedure addflt with input of size 8 for LOIs [2021-11-20 23:43:48,768 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-20 23:43:49,688 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:52,651 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:52,652 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:52,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 20 [2021-11-20 23:43:52,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907077312] [2021-11-20 23:43:52,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:52,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:43:52,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:52,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:43:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 23:43:52,654 INFO L87 Difference]: Start difference. First operand 194 states and 268 transitions. Second operand has 20 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 23:43:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:53,504 INFO L93 Difference]: Finished difference Result 290 states and 383 transitions. [2021-11-20 23:43:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 23:43:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 36 [2021-11-20 23:43:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:53,507 INFO L225 Difference]: With dead ends: 290 [2021-11-20 23:43:53,507 INFO L226 Difference]: Without dead ends: 190 [2021-11-20 23:43:53,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=205, Invalid=2051, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:43:53,510 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 42 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:53,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 741 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:43:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-20 23:43:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 170. [2021-11-20 23:43:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 129 states have (on average 1.3953488372093024) internal successors, (180), 140 states have internal predecessors, (180), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (28), 21 states have call predecessors, (28), 20 states have call successors, (28) [2021-11-20 23:43:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 230 transitions. [2021-11-20 23:43:53,533 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 230 transitions. Word has length 36 [2021-11-20 23:43:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:53,533 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 230 transitions. [2021-11-20 23:43:53,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.235294117647059) internal successors, (38), 15 states have internal predecessors, (38), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 23:43:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 230 transitions. [2021-11-20 23:43:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 23:43:53,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:53,535 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 23:43:53,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:53,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 23:43:53,763 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 23:43:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash 252172897, now seen corresponding path program 1 times [2021-11-20 23:43:53,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:53,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186039694] [2021-11-20 23:43:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:53,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:43:53,810 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:43:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:43:53,875 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:43:53,876 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:43:53,877 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2021-11-20 23:43:53,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2021-11-20 23:43:53,880 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2021-11-20 23:43:53,880 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2021-11-20 23:43:53,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2021-11-20 23:43:53,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2021-11-20 23:43:53,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2021-11-20 23:43:53,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2021-11-20 23:43:53,882 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2021-11-20 23:43:53,882 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2021-11-20 23:43:53,882 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2021-11-20 23:43:53,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2021-11-20 23:43:53,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2021-11-20 23:43:53,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2021-11-20 23:43:53,883 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2021-11-20 23:43:53,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2021-11-20 23:43:53,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 23:43:53,888 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:53,893 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:43:53,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:43:53 BoogieIcfgContainer [2021-11-20 23:43:53,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:43:53,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:43:53,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:43:53,974 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:43:53,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:44" (3/4) ... [2021-11-20 23:43:53,978 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:43:53,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:43:53,979 INFO L158 Benchmark]: Toolchain (without parser) took 70916.45ms. Allocated memory was 109.1MB in the beginning and 232.8MB in the end (delta: 123.7MB). Free memory was 74.9MB in the beginning and 200.2MB in the end (delta: -125.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:43:53,979 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:43:53,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.36ms. Allocated memory is still 109.1MB. Free memory was 74.7MB in the beginning and 83.7MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:43:53,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.37ms. Allocated memory is still 109.1MB. Free memory was 83.7MB in the beginning and 82.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:43:53,985 INFO L158 Benchmark]: Boogie Preprocessor took 69.55ms. Allocated memory is still 109.1MB. Free memory was 82.2MB in the beginning and 80.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:43:53,985 INFO L158 Benchmark]: RCFGBuilder took 687.78ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 64.8MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 23:43:53,986 INFO L158 Benchmark]: TraceAbstraction took 69672.38ms. Allocated memory was 109.1MB in the beginning and 232.8MB in the end (delta: 123.7MB). Free memory was 64.3MB in the beginning and 200.2MB in the end (delta: -135.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:43:53,987 INFO L158 Benchmark]: Witness Printer took 4.96ms. Allocated memory is still 232.8MB. Free memory is still 200.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:43:53,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 425.36ms. Allocated memory is still 109.1MB. Free memory was 74.7MB in the beginning and 83.7MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.37ms. Allocated memory is still 109.1MB. Free memory was 83.7MB in the beginning and 82.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.55ms. Allocated memory is still 109.1MB. Free memory was 82.2MB in the beginning and 80.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 687.78ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 64.8MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 69672.38ms. Allocated memory was 109.1MB in the beginning and 232.8MB in the end (delta: 123.7MB). Free memory was 64.3MB in the beginning and 200.2MB in the end (delta: -135.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.96ms. Allocated memory is still 232.8MB. Free memory is still 200.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 112]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 110, overapproximation of bitwiseAnd at line 111. Possible FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add1 ; [L233] unsigned int r_add2 ; [L234] unsigned int zero ; [L235] int tmp ; [L236] int tmp___0 ; [L237] int __retres14 ; VAL [ea=127, eb=0] [L241] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); [L241] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0] [L241] zero = base2flt(0, 0) [L242] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L29] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L57] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L59] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L64] COND TRUE e >= 127 [L65] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L80] return (__retres4); [L242] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, zero=0] [L242] a = base2flt(ma, ea) [L243] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=1, e=0, res=1] [L80] return (__retres4); [L243] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028797018963969, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L243] b = base2flt(mb, eb) [L244] CALL addflt(a, b) VAL [\old(a)=4294967295, \old(b)=1] [L84] unsigned int res ; [L85] unsigned int ma ; [L86] unsigned int mb ; [L87] unsigned int delta ; [L88] int ea ; [L89] int eb ; [L90] unsigned int tmp ; [L91] unsigned int __retres10 ; [L94] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, tmp=1] [L101] COND FALSE !(! b) [L108] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, tmp=1] [L109] EXPR (int )(a >> 24U) - 128 [L109] ea = (int )(a >> 24U) - 128 [L110] ma = ma | (1U << 24U) [L111] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127, tmp=1] [L112] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127, tmp=1] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 109]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 109]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 112]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 133]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 133]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 141]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 141]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 69.5s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 850 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 806 mSDsluCounter, 6229 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5322 mSDsCounter, 149 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2163 IncrementalHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 149 mSolverCounterUnsat, 1239 mSDtfsCounter, 2163 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 504 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 37.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=17, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 352 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.7s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 587 ConstructedInterpolants, 0 QuantifiedInterpolants, 1695 SizeOfPredicates, 29 NumberOfNonLiveVariables, 488 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 26 InterpolantComputations, 14 PerfectInterpolantSequences, 169/211 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: OVERALL_TIME: 3.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 24, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 24, TOOLS_POST_TIME: 1.6s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 1.0s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 40, TOOLS_QUANTIFIERELIM_TIME: 3.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 60, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 11, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 24, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 174, DAG_COMPRESSION_RETAINED_NODES: 60, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 23:43:54,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a634799-8e42-412f-a633-71a78b3e7e45/bin/utaipan-TEXQjIfE4P/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample