./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:16:00,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:16:00,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:16:00,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:16:00,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:16:00,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:16:00,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:16:00,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:16:00,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:16:00,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:16:00,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:16:00,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:16:00,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:16:00,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:16:00,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:16:00,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:16:00,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:16:00,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:16:00,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:16:00,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:16:00,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:16:00,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:16:00,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:16:00,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:16:00,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:16:00,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:16:00,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:16:00,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:16:00,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:16:00,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:16:00,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:16:00,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:16:00,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:16:00,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:16:00,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:16:00,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:16:00,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:16:00,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:16:00,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:16:00,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:16:00,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:16:00,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:16:00,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:16:00,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:16:00,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:16:00,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:16:00,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:16:00,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:16:00,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:16:00,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:16:00,954 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:16:00,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:16:00,954 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:16:00,954 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:16:00,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:16:00,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:16:00,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:16:00,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:16:00,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:16:00,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:16:00,956 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:16:00,956 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:16:00,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:16:00,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:16:00,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:16:00,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:16:00,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:16:00,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:16:00,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:16:00,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:16:00,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:16:00,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:16:00,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:16:00,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:16:00,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:16:00,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:16:00,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b [2021-12-19 15:16:01,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:16:01,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:16:01,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:16:01,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:16:01,203 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:16:01,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2021-12-19 15:16:01,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3432a24/87179fa38def4c37b72ad0e8f9d14842/FLAG982e4ff04 [2021-12-19 15:16:01,668 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:16:01,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2021-12-19 15:16:01,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3432a24/87179fa38def4c37b72ad0e8f9d14842/FLAG982e4ff04 [2021-12-19 15:16:02,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3432a24/87179fa38def4c37b72ad0e8f9d14842 [2021-12-19 15:16:02,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:16:02,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:16:02,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:16:02,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:16:02,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:16:02,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b9e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02, skipping insertion in model container [2021-12-19 15:16:02,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:16:02,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:16:02,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2021-12-19 15:16:02,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:16:02,317 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:16:02,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2021-12-19 15:16:02,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:16:02,375 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:16:02,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02 WrapperNode [2021-12-19 15:16:02,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:16:02,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:16:02,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:16:02,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:16:02,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,421 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-12-19 15:16:02,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:16:02,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:16:02,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:16:02,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:16:02,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:16:02,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:16:02,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:16:02,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:16:02,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (1/1) ... [2021-12-19 15:16:02,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:16:02,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:16:02,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-19 15:16:02,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-19 15:16:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:16:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:16:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-19 15:16:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-19 15:16:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:16:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:16:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-19 15:16:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-19 15:16:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-19 15:16:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-19 15:16:02,608 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:16:02,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:16:02,827 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:16:02,832 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:16:02,833 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 15:16:02,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:16:02 BoogieIcfgContainer [2021-12-19 15:16:02,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:16:02,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:16:02,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:16:02,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:16:02,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:16:02" (1/3) ... [2021-12-19 15:16:02,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65948437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:16:02, skipping insertion in model container [2021-12-19 15:16:02,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:16:02" (2/3) ... [2021-12-19 15:16:02,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65948437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:16:02, skipping insertion in model container [2021-12-19 15:16:02,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:16:02" (3/3) ... [2021-12-19 15:16:02,852 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2021-12-19 15:16:02,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:16:02,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-12-19 15:16:02,896 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:16:02,900 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 [2021-12-19 15:16:02,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-12-19 15:16:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 56 states have (on average 1.625) internal successors, (91), 72 states have internal predecessors, (91), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-19 15:16:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-19 15:16:02,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:02,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:02,920 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:02,924 INFO L85 PathProgramCache]: Analyzing trace with hash 915940719, now seen corresponding path program 1 times [2021-12-19 15:16:02,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:02,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735757079] [2021-12-19 15:16:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:02,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:16:03,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735757079] [2021-12-19 15:16:03,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735757079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:03,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:03,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:16:03,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065441222] [2021-12-19 15:16:03,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:03,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-19 15:16:03,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:03,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-19 15:16:03,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-19 15:16:03,067 INFO L87 Difference]: Start difference. First operand has 84 states, 56 states have (on average 1.625) internal successors, (91), 72 states have internal predecessors, (91), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-19 15:16:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:03,107 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2021-12-19 15:16:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-19 15:16:03,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2021-12-19 15:16:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:03,115 INFO L225 Difference]: With dead ends: 163 [2021-12-19 15:16:03,115 INFO L226 Difference]: Without dead ends: 72 [2021-12-19 15:16:03,117 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 [2021-12-19 15:16:03,120 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:03,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:03,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-19 15:16:03,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-12-19 15:16:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 62 states have internal predecessors, (73), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2021-12-19 15:16:03,154 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 9 [2021-12-19 15:16:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:03,154 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2021-12-19 15:16:03,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-19 15:16:03,154 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2021-12-19 15:16:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-19 15:16:03,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:03,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:03,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:16:03,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash 914999453, now seen corresponding path program 1 times [2021-12-19 15:16:03,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:03,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617741671] [2021-12-19 15:16:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:03,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:16:03,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:03,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617741671] [2021-12-19 15:16:03,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617741671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:03,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:03,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:16:03,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611647410] [2021-12-19 15:16:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:03,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:16:03,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:16:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:16:03,208 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-19 15:16:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:03,292 INFO L93 Difference]: Finished difference Result 181 states and 223 transitions. [2021-12-19 15:16:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:16:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2021-12-19 15:16:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:03,295 INFO L225 Difference]: With dead ends: 181 [2021-12-19 15:16:03,295 INFO L226 Difference]: Without dead ends: 112 [2021-12-19 15:16:03,296 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 [2021-12-19 15:16:03,298 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 56 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:03,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 227 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:16:03,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-19 15:16:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2021-12-19 15:16:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 78 states have (on average 1.4871794871794872) internal successors, (116), 92 states have internal predecessors, (116), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2021-12-19 15:16:03,320 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 9 [2021-12-19 15:16:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:03,321 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2021-12-19 15:16:03,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-19 15:16:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2021-12-19 15:16:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-19 15:16:03,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:03,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:03,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 15:16:03,323 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash -718991324, now seen corresponding path program 1 times [2021-12-19 15:16:03,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:03,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11551838] [2021-12-19 15:16:03,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:03,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:16:03,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11551838] [2021-12-19 15:16:03,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11551838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:03,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:03,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:16:03,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540135981] [2021-12-19 15:16:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:03,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:16:03,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:16:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:16:03,377 INFO L87 Difference]: Start difference. First operand 103 states and 129 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) [2021-12-19 15:16:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:03,476 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2021-12-19 15:16:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:16:03,477 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 [2021-12-19 15:16:03,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:03,479 INFO L225 Difference]: With dead ends: 122 [2021-12-19 15:16:03,479 INFO L226 Difference]: Without dead ends: 120 [2021-12-19 15:16:03,479 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 [2021-12-19 15:16:03,480 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 72 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:03,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 306 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:16:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-19 15:16:03,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2021-12-19 15:16:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.4625) internal successors, (117), 94 states have internal predecessors, (117), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 130 transitions. [2021-12-19 15:16:03,505 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 130 transitions. Word has length 13 [2021-12-19 15:16:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:03,506 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 130 transitions. [2021-12-19 15:16:03,506 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) [2021-12-19 15:16:03,506 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 130 transitions. [2021-12-19 15:16:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-19 15:16:03,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:03,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:03,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-19 15:16:03,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -813894463, now seen corresponding path program 1 times [2021-12-19 15:16:03,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:03,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852653791] [2021-12-19 15:16:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:03,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:16:03,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:03,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852653791] [2021-12-19 15:16:03,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852653791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:03,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:03,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:16:03,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419208243] [2021-12-19 15:16:03,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:03,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:16:03,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:03,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:16:03,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:16:03,588 INFO L87 Difference]: Start difference. First operand 105 states and 130 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, (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) [2021-12-19 15:16:03,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:03,666 INFO L93 Difference]: Finished difference Result 198 states and 237 transitions. [2021-12-19 15:16:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:16:03,667 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, (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 [2021-12-19 15:16:03,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:03,668 INFO L225 Difference]: With dead ends: 198 [2021-12-19 15:16:03,668 INFO L226 Difference]: Without dead ends: 126 [2021-12-19 15:16:03,669 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 [2021-12-19 15:16:03,670 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 94 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:03,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 246 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:16:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-19 15:16:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2021-12-19 15:16:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 98 states have internal predecessors, (121), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2021-12-19 15:16:03,683 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 14 [2021-12-19 15:16:03,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:03,683 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2021-12-19 15:16:03,683 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, (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) [2021-12-19 15:16:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2021-12-19 15:16:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-19 15:16:03,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:03,684 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:03,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-19 15:16:03,685 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash -459560941, now seen corresponding path program 1 times [2021-12-19 15:16:03,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:03,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932085856] [2021-12-19 15:16:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:03,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:03,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:16:03,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:03,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932085856] [2021-12-19 15:16:03,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932085856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:03,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:03,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:16:03,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299947110] [2021-12-19 15:16:03,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:03,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:16:03,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:03,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:16:03,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:16:03,740 INFO L87 Difference]: Start difference. First operand 109 states and 134 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) [2021-12-19 15:16:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:03,806 INFO L93 Difference]: Finished difference Result 150 states and 184 transitions. [2021-12-19 15:16:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:16:03,806 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 [2021-12-19 15:16:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:03,809 INFO L225 Difference]: With dead ends: 150 [2021-12-19 15:16:03,809 INFO L226 Difference]: Without dead ends: 147 [2021-12-19 15:16:03,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:16:03,818 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 63 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:03,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 281 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-19 15:16:03,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2021-12-19 15:16:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 105 states have (on average 1.438095238095238) internal successors, (151), 118 states have internal predecessors, (151), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 164 transitions. [2021-12-19 15:16:03,839 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 164 transitions. Word has length 16 [2021-12-19 15:16:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:03,840 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 164 transitions. [2021-12-19 15:16:03,840 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) [2021-12-19 15:16:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 164 transitions. [2021-12-19 15:16:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-19 15:16:03,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:03,848 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:03,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-19 15:16:03,848 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1079576499, now seen corresponding path program 1 times [2021-12-19 15:16:03,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:03,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645625582] [2021-12-19 15:16:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:03,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:16:03,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:03,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645625582] [2021-12-19 15:16:03,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645625582] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:16:03,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356144974] [2021-12-19 15:16:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:03,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:16:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:16:03,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:16:03,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 15:16:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:03,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:16:03,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:16:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:16:04,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:16:04,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356144974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:04,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-19 15:16:04,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-19 15:16:04,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096234461] [2021-12-19 15:16:04,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:04,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:16:04,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:16:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-19 15:16:04,034 INFO L87 Difference]: Start difference. First operand 130 states and 164 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-12-19 15:16:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:04,079 INFO L93 Difference]: Finished difference Result 158 states and 197 transitions. [2021-12-19 15:16:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:16:04,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2021-12-19 15:16:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:04,081 INFO L225 Difference]: With dead ends: 158 [2021-12-19 15:16:04,081 INFO L226 Difference]: Without dead ends: 157 [2021-12-19 15:16:04,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-19 15:16:04,082 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 10 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:04,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 245 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-19 15:16:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 128. [2021-12-19 15:16:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 116 states have internal predecessors, (147), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 160 transitions. [2021-12-19 15:16:04,106 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 160 transitions. Word has length 15 [2021-12-19 15:16:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:04,106 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 160 transitions. [2021-12-19 15:16:04,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-12-19 15:16:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 160 transitions. [2021-12-19 15:16:04,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-19 15:16:04,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:04,107 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:04,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 15:16:04,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-19 15:16:04,308 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1361487226, now seen corresponding path program 1 times [2021-12-19 15:16:04,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:04,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335601080] [2021-12-19 15:16:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:04,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-19 15:16:04,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:04,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335601080] [2021-12-19 15:16:04,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335601080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:04,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:04,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:16:04,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608734592] [2021-12-19 15:16:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:04,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:16:04,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:16:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:16:04,351 INFO L87 Difference]: Start difference. First operand 128 states and 160 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-19 15:16:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:04,367 INFO L93 Difference]: Finished difference Result 137 states and 169 transitions. [2021-12-19 15:16:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:16:04,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 17 [2021-12-19 15:16:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:04,369 INFO L225 Difference]: With dead ends: 137 [2021-12-19 15:16:04,369 INFO L226 Difference]: Without dead ends: 136 [2021-12-19 15:16:04,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:16:04,370 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:04,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 158 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:04,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-19 15:16:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 125. [2021-12-19 15:16:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 113 states have internal predecessors, (142), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 155 transitions. [2021-12-19 15:16:04,378 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 155 transitions. Word has length 17 [2021-12-19 15:16:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:04,379 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 155 transitions. [2021-12-19 15:16:04,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-19 15:16:04,379 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 155 transitions. [2021-12-19 15:16:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-19 15:16:04,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:04,380 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:04,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-19 15:16:04,381 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:04,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1631017083, now seen corresponding path program 1 times [2021-12-19 15:16:04,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:04,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007741107] [2021-12-19 15:16:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:04,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:16:04,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:04,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007741107] [2021-12-19 15:16:04,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007741107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:04,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:04,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:16:04,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128508590] [2021-12-19 15:16:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:04,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:16:04,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:04,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:16:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:16:04,441 INFO L87 Difference]: Start difference. First operand 125 states and 155 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-12-19 15:16:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:04,497 INFO L93 Difference]: Finished difference Result 145 states and 174 transitions. [2021-12-19 15:16:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:16:04,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 18 [2021-12-19 15:16:04,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:04,500 INFO L225 Difference]: With dead ends: 145 [2021-12-19 15:16:04,500 INFO L226 Difference]: Without dead ends: 143 [2021-12-19 15:16:04,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:16:04,502 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 51 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:04,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 280 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-19 15:16:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2021-12-19 15:16:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 116 states have internal predecessors, (144), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 157 transitions. [2021-12-19 15:16:04,524 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 157 transitions. Word has length 18 [2021-12-19 15:16:04,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:04,525 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 157 transitions. [2021-12-19 15:16:04,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-12-19 15:16:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 157 transitions. [2021-12-19 15:16:04,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-19 15:16:04,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:04,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:04,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-19 15:16:04,530 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash -424506547, now seen corresponding path program 1 times [2021-12-19 15:16:04,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:04,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264864562] [2021-12-19 15:16:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:04,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-19 15:16:04,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:04,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264864562] [2021-12-19 15:16:04,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264864562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:04,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:04,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:16:04,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789693809] [2021-12-19 15:16:04,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:04,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:16:04,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:04,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:16:04,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:16:04,565 INFO L87 Difference]: Start difference. First operand 128 states and 157 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-19 15:16:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:04,592 INFO L93 Difference]: Finished difference Result 157 states and 189 transitions. [2021-12-19 15:16:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:16:04,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 19 [2021-12-19 15:16:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:04,594 INFO L225 Difference]: With dead ends: 157 [2021-12-19 15:16:04,594 INFO L226 Difference]: Without dead ends: 156 [2021-12-19 15:16:04,594 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 [2021-12-19 15:16:04,594 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 10 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:04,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 234 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-19 15:16:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 125. [2021-12-19 15:16:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 101 states have (on average 1.386138613861386) internal successors, (140), 113 states have internal predecessors, (140), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2021-12-19 15:16:04,601 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 19 [2021-12-19 15:16:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:04,602 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2021-12-19 15:16:04,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-19 15:16:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2021-12-19 15:16:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-19 15:16:04,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:04,603 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:04,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-19 15:16:04,603 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash -614250977, now seen corresponding path program 1 times [2021-12-19 15:16:04,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:04,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131983689] [2021-12-19 15:16:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:04,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-19 15:16:04,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131983689] [2021-12-19 15:16:04,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131983689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:04,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:04,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:16:04,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951321035] [2021-12-19 15:16:04,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:04,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:16:04,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:16:04,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:16:04,648 INFO L87 Difference]: Start difference. First operand 125 states and 153 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) [2021-12-19 15:16:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:04,699 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2021-12-19 15:16:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:16:04,699 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 23 [2021-12-19 15:16:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:04,701 INFO L225 Difference]: With dead ends: 139 [2021-12-19 15:16:04,701 INFO L226 Difference]: Without dead ends: 137 [2021-12-19 15:16:04,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:16:04,702 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 57 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:04,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 277 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:04,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-19 15:16:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2021-12-19 15:16:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 107 states have internal predecessors, (132), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2021-12-19 15:16:04,708 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 23 [2021-12-19 15:16:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:04,708 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2021-12-19 15:16:04,708 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) [2021-12-19 15:16:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2021-12-19 15:16:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-19 15:16:04,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:04,709 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:04,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-19 15:16:04,710 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash -997219449, now seen corresponding path program 1 times [2021-12-19 15:16:04,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85961245] [2021-12-19 15:16:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:04,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-19 15:16:04,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:04,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85961245] [2021-12-19 15:16:04,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85961245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:04,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:04,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:16:04,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082546276] [2021-12-19 15:16:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:04,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:16:04,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:16:04,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:16:04,750 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-12-19 15:16:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:04,810 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2021-12-19 15:16:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 15:16:04,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 25 [2021-12-19 15:16:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:04,812 INFO L225 Difference]: With dead ends: 133 [2021-12-19 15:16:04,812 INFO L226 Difference]: Without dead ends: 131 [2021-12-19 15:16:04,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:16:04,813 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:04,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 277 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-19 15:16:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2021-12-19 15:16:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.351063829787234) internal successors, (127), 102 states have internal predecessors, (127), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-19 15:16:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2021-12-19 15:16:04,818 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 25 [2021-12-19 15:16:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:04,819 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2021-12-19 15:16:04,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-12-19 15:16:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2021-12-19 15:16:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-19 15:16:04,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:04,820 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:04,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-19 15:16:04,820 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1249154163, now seen corresponding path program 1 times [2021-12-19 15:16:04,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:04,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119193667] [2021-12-19 15:16:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:04,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-19 15:16:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-19 15:16:04,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:04,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119193667] [2021-12-19 15:16:04,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119193667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:16:04,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228791270] [2021-12-19 15:16:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:04,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:16:04,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:16:04,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:16:04,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 15:16:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:04,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-19 15:16:04,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:16:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-19 15:16:05,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:16:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-19 15:16:05,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228791270] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:16:05,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:16:05,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 18 [2021-12-19 15:16:05,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135291153] [2021-12-19 15:16:05,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:16:05,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-19 15:16:05,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-19 15:16:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-12-19 15:16:05,285 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 14 states have internal predecessors, (29), 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) [2021-12-19 15:16:05,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:05,615 INFO L93 Difference]: Finished difference Result 262 states and 321 transitions. [2021-12-19 15:16:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-19 15:16:05,616 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 14 states have internal predecessors, (29), 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 29 [2021-12-19 15:16:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:05,617 INFO L225 Difference]: With dead ends: 262 [2021-12-19 15:16:05,618 INFO L226 Difference]: Without dead ends: 153 [2021-12-19 15:16:05,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2021-12-19 15:16:05,619 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 60 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:05,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 799 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 15:16:05,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-19 15:16:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 103. [2021-12-19 15:16:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 88 states have internal predecessors, (105), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-19 15:16:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2021-12-19 15:16:05,628 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 29 [2021-12-19 15:16:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:05,628 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2021-12-19 15:16:05,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 14 states have internal predecessors, (29), 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) [2021-12-19 15:16:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2021-12-19 15:16:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-19 15:16:05,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:05,630 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:05,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 15:16:05,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-19 15:16:05,856 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:05,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1266015036, now seen corresponding path program 1 times [2021-12-19 15:16:05,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:05,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335259595] [2021-12-19 15:16:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:05,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-19 15:16:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-19 15:16:05,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:05,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335259595] [2021-12-19 15:16:05,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335259595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:05,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:05,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-19 15:16:05,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945860844] [2021-12-19 15:16:05,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:05,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-19 15:16:05,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:05,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-19 15:16:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-19 15:16:05,960 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-12-19 15:16:06,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:06,022 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2021-12-19 15:16:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-19 15:16:06,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 33 [2021-12-19 15:16:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:06,024 INFO L225 Difference]: With dead ends: 166 [2021-12-19 15:16:06,024 INFO L226 Difference]: Without dead ends: 124 [2021-12-19 15:16:06,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:16:06,025 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 12 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:06,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 583 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:06,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-19 15:16:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 114. [2021-12-19 15:16:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 97 states have internal predecessors, (113), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-19 15:16:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2021-12-19 15:16:06,033 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 33 [2021-12-19 15:16:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:06,034 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2021-12-19 15:16:06,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-12-19 15:16:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2021-12-19 15:16:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-19 15:16:06,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:06,035 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:06,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-19 15:16:06,035 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:06,036 INFO L85 PathProgramCache]: Analyzing trace with hash 700268352, now seen corresponding path program 1 times [2021-12-19 15:16:06,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:06,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122379494] [2021-12-19 15:16:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:06,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-19 15:16:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:16:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-19 15:16:06,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:06,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122379494] [2021-12-19 15:16:06,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122379494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:06,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:06,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-19 15:16:06,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100287232] [2021-12-19 15:16:06,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:06,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-19 15:16:06,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-19 15:16:06,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-19 15:16:06,120 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:16:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:06,198 INFO L93 Difference]: Finished difference Result 184 states and 215 transitions. [2021-12-19 15:16:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 15:16:06,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2021-12-19 15:16:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:06,199 INFO L225 Difference]: With dead ends: 184 [2021-12-19 15:16:06,200 INFO L226 Difference]: Without dead ends: 144 [2021-12-19 15:16:06,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-19 15:16:06,201 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 71 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:06,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 623 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:16:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-19 15:16:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 137. [2021-12-19 15:16:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 107 states have (on average 1.308411214953271) internal successors, (140), 116 states have internal predecessors, (140), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2021-12-19 15:16:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 167 transitions. [2021-12-19 15:16:06,208 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 167 transitions. Word has length 37 [2021-12-19 15:16:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:06,209 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-12-19 15:16:06,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:16:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 167 transitions. [2021-12-19 15:16:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-19 15:16:06,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:06,210 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:06,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-19 15:16:06,210 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:06,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1158132499, now seen corresponding path program 2 times [2021-12-19 15:16:06,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:06,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935612923] [2021-12-19 15:16:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:06,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-19 15:16:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-19 15:16:06,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:06,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935612923] [2021-12-19 15:16:06,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935612923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:06,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:06,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-19 15:16:06,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259245787] [2021-12-19 15:16:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:06,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 15:16:06,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 15:16:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:16:06,346 INFO L87 Difference]: Start difference. First operand 137 states and 167 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-12-19 15:16:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:06,481 INFO L93 Difference]: Finished difference Result 257 states and 310 transitions. [2021-12-19 15:16:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 15:16:06,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 37 [2021-12-19 15:16:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:06,483 INFO L225 Difference]: With dead ends: 257 [2021-12-19 15:16:06,483 INFO L226 Difference]: Without dead ends: 215 [2021-12-19 15:16:06,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-19 15:16:06,484 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 152 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:06,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1007 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:16:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-19 15:16:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2021-12-19 15:16:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.323943661971831) internal successors, (188), 152 states have internal predecessors, (188), 17 states have call successors, (17), 10 states have call predecessors, (17), 12 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2021-12-19 15:16:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 225 transitions. [2021-12-19 15:16:06,494 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 225 transitions. Word has length 37 [2021-12-19 15:16:06,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:06,494 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 225 transitions. [2021-12-19 15:16:06,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-12-19 15:16:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 225 transitions. [2021-12-19 15:16:06,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-19 15:16:06,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:06,495 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:06,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-19 15:16:06,496 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:06,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:06,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1158072917, now seen corresponding path program 1 times [2021-12-19 15:16:06,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:06,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347979193] [2021-12-19 15:16:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:06,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-19 15:16:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-19 15:16:06,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347979193] [2021-12-19 15:16:06,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347979193] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:16:06,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290397213] [2021-12-19 15:16:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:06,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:16:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:16:06,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:16:06,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 15:16:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-19 15:16:06,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:16:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-19 15:16:06,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:16:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-19 15:16:07,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290397213] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:16:07,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:16:07,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2021-12-19 15:16:07,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870132789] [2021-12-19 15:16:07,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:16:07,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-19 15:16:07,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-19 15:16:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-19 15:16:07,020 INFO L87 Difference]: Start difference. First operand 179 states and 225 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-19 15:16:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:07,262 INFO L93 Difference]: Finished difference Result 337 states and 426 transitions. [2021-12-19 15:16:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-19 15:16:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2021-12-19 15:16:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:07,264 INFO L225 Difference]: With dead ends: 337 [2021-12-19 15:16:07,264 INFO L226 Difference]: Without dead ends: 277 [2021-12-19 15:16:07,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-12-19 15:16:07,266 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 162 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:07,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1218 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 15:16:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-12-19 15:16:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2021-12-19 15:16:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 200 states have internal predecessors, (255), 24 states have call successors, (24), 12 states have call predecessors, (24), 15 states have return successors, (30), 23 states have call predecessors, (30), 22 states have call successors, (30) [2021-12-19 15:16:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 309 transitions. [2021-12-19 15:16:07,278 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 309 transitions. Word has length 37 [2021-12-19 15:16:07,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:07,278 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 309 transitions. [2021-12-19 15:16:07,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-19 15:16:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 309 transitions. [2021-12-19 15:16:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-19 15:16:07,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:07,280 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-19 15:16:07,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 15:16:07,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:16:07,500 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:07,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1294716000, now seen corresponding path program 1 times [2021-12-19 15:16:07,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:07,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611217451] [2021-12-19 15:16:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:07,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:07,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-19 15:16:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:07,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-19 15:16:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-19 15:16:07,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:07,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611217451] [2021-12-19 15:16:07,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611217451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:16:07,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255043109] [2021-12-19 15:16:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:07,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:16:07,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:16:07,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:16:07,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 15:16:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:07,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-19 15:16:07,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:16:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-19 15:16:07,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:16:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-19 15:16:07,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255043109] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:16:07,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:16:07,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 16 [2021-12-19 15:16:07,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420500015] [2021-12-19 15:16:07,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:16:07,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-19 15:16:07,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:07,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-19 15:16:07,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-19 15:16:07,905 INFO L87 Difference]: Start difference. First operand 236 states and 309 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-19 15:16:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:08,153 INFO L93 Difference]: Finished difference Result 350 states and 450 transitions. [2021-12-19 15:16:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-19 15:16:08,155 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2021-12-19 15:16:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:08,157 INFO L225 Difference]: With dead ends: 350 [2021-12-19 15:16:08,157 INFO L226 Difference]: Without dead ends: 256 [2021-12-19 15:16:08,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-12-19 15:16:08,158 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 43 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:08,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 853 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:16:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-19 15:16:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 215. [2021-12-19 15:16:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 174 states have (on average 1.3620689655172413) internal successors, (237), 184 states have internal predecessors, (237), 21 states have call successors, (21), 10 states have call predecessors, (21), 12 states have return successors, (24), 20 states have call predecessors, (24), 19 states have call successors, (24) [2021-12-19 15:16:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2021-12-19 15:16:08,169 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 39 [2021-12-19 15:16:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:08,169 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2021-12-19 15:16:08,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 12 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-19 15:16:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2021-12-19 15:16:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-19 15:16:08,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:08,171 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-19 15:16:08,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 15:16:08,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-19 15:16:08,395 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -838128895, now seen corresponding path program 1 times [2021-12-19 15:16:08,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:08,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996788256] [2021-12-19 15:16:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:08,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-19 15:16:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 15:16:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-19 15:16:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:16:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-19 15:16:08,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:16:08,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996788256] [2021-12-19 15:16:08,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996788256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:16:08,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:16:08,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-19 15:16:08,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466500267] [2021-12-19 15:16:08,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:16:08,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-19 15:16:08,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:16:08,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-19 15:16:08,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:16:08,592 INFO L87 Difference]: Start difference. First operand 215 states and 282 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-12-19 15:16:08,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:16:08,862 INFO L93 Difference]: Finished difference Result 248 states and 312 transitions. [2021-12-19 15:16:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-19 15:16:08,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 39 [2021-12-19 15:16:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:16:08,863 INFO L225 Difference]: With dead ends: 248 [2021-12-19 15:16:08,864 INFO L226 Difference]: Without dead ends: 247 [2021-12-19 15:16:08,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-19 15:16:08,864 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 206 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:16:08,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 689 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:16:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-19 15:16:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 215. [2021-12-19 15:16:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 174 states have (on average 1.3563218390804597) internal successors, (236), 184 states have internal predecessors, (236), 21 states have call successors, (21), 10 states have call predecessors, (21), 12 states have return successors, (24), 20 states have call predecessors, (24), 19 states have call successors, (24) [2021-12-19 15:16:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 281 transitions. [2021-12-19 15:16:08,876 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 281 transitions. Word has length 39 [2021-12-19 15:16:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:16:08,876 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 281 transitions. [2021-12-19 15:16:08,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-12-19 15:16:08,877 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 281 transitions. [2021-12-19 15:16:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-19 15:16:08,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:16:08,877 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2021-12-19 15:16:08,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-19 15:16:08,878 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-19 15:16:08,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:16:08,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1741690569, now seen corresponding path program 1 times [2021-12-19 15:16:08,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:16:08,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399253587] [2021-12-19 15:16:08,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:16:08,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:16:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 15:16:08,889 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 15:16:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 15:16:08,913 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 15:16:08,913 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-19 15:16:08,914 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2021-12-19 15:16:08,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2021-12-19 15:16:08,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2021-12-19 15:16:08,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2021-12-19 15:16:08,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2021-12-19 15:16:08,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2021-12-19 15:16:08,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2021-12-19 15:16:08,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2021-12-19 15:16:08,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2021-12-19 15:16:08,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2021-12-19 15:16:08,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2021-12-19 15:16:08,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2021-12-19 15:16:08,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2021-12-19 15:16:08,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2021-12-19 15:16:08,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2021-12-19 15:16:08,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2021-12-19 15:16:08,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-19 15:16:08,920 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:16:08,923 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-19 15:16:08,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 03:16:08 BoogieIcfgContainer [2021-12-19 15:16:08,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-19 15:16:08,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 15:16:08,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 15:16:08,950 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 15:16:08,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:16:02" (3/4) ... [2021-12-19 15:16:08,953 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 15:16:08,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 15:16:08,954 INFO L158 Benchmark]: Toolchain (without parser) took 6877.70ms. Allocated memory was 88.1MB in the beginning and 132.1MB in the end (delta: 44.0MB). Free memory was 55.1MB in the beginning and 49.8MB in the end (delta: 5.2MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2021-12-19 15:16:08,954 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 44.5MB in the beginning and 44.4MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:16:08,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.66ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 54.7MB in the beginning and 81.9MB in the end (delta: -27.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 15:16:08,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.99ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 80.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:16:08,955 INFO L158 Benchmark]: Boogie Preprocessor took 46.66ms. Allocated memory is still 109.1MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 15:16:08,955 INFO L158 Benchmark]: RCFGBuilder took 363.56ms. Allocated memory is still 109.1MB. Free memory was 79.2MB in the beginning and 65.2MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-19 15:16:08,955 INFO L158 Benchmark]: TraceAbstraction took 6114.33ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 64.6MB in the beginning and 49.8MB in the end (delta: 14.8MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2021-12-19 15:16:08,955 INFO L158 Benchmark]: Witness Printer took 3.13ms. Allocated memory is still 132.1MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:16:08,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 44.5MB in the beginning and 44.4MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.66ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 54.7MB in the beginning and 81.9MB in the end (delta: -27.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.99ms. Allocated memory is still 109.1MB. Free memory was 81.9MB in the beginning and 80.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.66ms. Allocated memory is still 109.1MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 363.56ms. Allocated memory is still 109.1MB. Free memory was 79.2MB in the beginning and 65.2MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6114.33ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 64.6MB in the beginning and 49.8MB in the end (delta: 14.8MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * Witness Printer took 3.13ms. Allocated memory is still 132.1MB. Free memory is still 49.8MB. 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: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 111, overapproximation of bitwiseAnd at line 112. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add1 ; [L234] unsigned int r_add2 ; [L235] unsigned int zero ; [L236] int tmp ; [L237] int tmp___0 ; [L238] int __retres14 ; VAL [ea=127, eb=0] [L242] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L242] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0] [L242] zero = base2flt(0, 0) [L243] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L30] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L58] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L60] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L65] COND TRUE e >= 127 [L66] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L81] return (__retres4); VAL [\old(e)=127, \old(m)=33554432, \result=4294967295, __retres4=4294967295, e=127, m=33554432] [L243] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, zero=0] [L243] a = base2flt(ma, ea) [L244] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L78] EXPR e + 128 [L78] res = m | ((unsigned int )(e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=1, e=0, res=1] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=36028797018963969, __retres4=1, e=0, res=1] [L244] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028797018963969, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L244] b = base2flt(mb, eb) [L245] CALL addflt(a, b) VAL [\old(a)=4294967295, \old(b)=1] [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L95] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L110] EXPR (int )(a >> 24U) - 128 [L110] ea = (int )(a >> 24U) - 128 [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127] [L113] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127] - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: 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, 84 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1195 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1169 mSDsluCounter, 8402 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6884 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1528 IncrementalHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 1518 mSDtfsCounter, 1528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 277 SyntacticMatches, 5 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=16, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 396 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 590 NumberOfCodeBlocks, 590 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 629 ConstructedInterpolants, 0 QuantifiedInterpolants, 1819 SizeOfPredicates, 11 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 25 InterpolantComputations, 15 PerfectInterpolantSequences, 214/259 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-19 15:16:08,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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