./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 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_3a.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 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:34:06,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:34:06,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:34:06,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:34:06,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:34:06,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:34:06,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:34:06,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:34:06,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:34:06,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:34:06,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:34:06,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:34:06,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:34:06,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:34:06,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:34:06,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:34:06,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:34:06,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:34:06,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:34:06,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:34:06,656 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:34:06,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:34:06,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:34:06,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:34:06,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:34:06,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:34:06,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:34:06,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:34:06,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:34:06,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:34:06,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:34:06,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:34:06,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:34:06,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:34:06,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:34:06,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:34:06,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:34:06,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:34:06,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:34:06,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:34:06,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:34:06,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:34:06,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-23 13:34:06,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:34:06,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:34:06,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:34:06,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:34:06,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:34:06,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:34:06,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:34:06,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:34:06,689 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:34:06,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:34:06,690 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 13:34:06,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:34:06,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:34:06,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 13:34:06,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:34:06,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:34:06,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:34:06,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:34:06,691 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:34:06,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 13:34:06,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:34:06,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:34:06,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:34:06,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:34:06,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:34:06,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:34:06,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:34:06,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:34:06,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:34:06,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:34:06,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:34:06,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:34:06,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:34:06,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2022-07-23 13:34:06,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:34:06,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:34:06,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:34:06,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:34:06,873 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:34:06,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-07-23 13:34:06,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7e95bdd/cf882fb7d58f4502a71c402fa1bf0058/FLAG68080c76b [2022-07-23 13:34:07,279 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:34:07,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-07-23 13:34:07,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7e95bdd/cf882fb7d58f4502a71c402fa1bf0058/FLAG68080c76b [2022-07-23 13:34:07,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7e95bdd/cf882fb7d58f4502a71c402fa1bf0058 [2022-07-23 13:34:07,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:34:07,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:34:07,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:34:07,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:34:07,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:34:07,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61579352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07, skipping insertion in model container [2022-07-23 13:34:07,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:34:07,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:34:07,439 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_3a.c.cil.c[728,741] [2022-07-23 13:34:07,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:34:07,477 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:34:07,485 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_3a.c.cil.c[728,741] [2022-07-23 13:34:07,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:34:07,519 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:34:07,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07 WrapperNode [2022-07-23 13:34:07,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:34:07,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:34:07,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:34:07,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:34:07,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,551 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 192 [2022-07-23 13:34:07,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:34:07,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:34:07,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:34:07,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:34:07,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:34:07,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:34:07,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:34:07,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:34:07,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (1/1) ... [2022-07-23 13:34:07,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:34:07,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:07,622 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) [2022-07-23 13:34:07,625 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 [2022-07-23 13:34:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 13:34:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 13:34:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-23 13:34:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-23 13:34:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:34:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:34:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-23 13:34:07,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-23 13:34:07,724 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:34:07,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:34:08,212 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:34:08,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:34:08,218 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 13:34:08,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:34:08 BoogieIcfgContainer [2022-07-23 13:34:08,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:34:08,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:34:08,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:34:08,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:34:08,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:34:07" (1/3) ... [2022-07-23 13:34:08,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d6dc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:34:08, skipping insertion in model container [2022-07-23 13:34:08,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:34:07" (2/3) ... [2022-07-23 13:34:08,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d6dc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:34:08, skipping insertion in model container [2022-07-23 13:34:08,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:34:08" (3/3) ... [2022-07-23 13:34:08,230 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2022-07-23 13:34:08,239 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:34:08,239 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-07-23 13:34:08,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:34:08,275 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@761898f8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c23e040 [2022-07-23 13:34:08,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-07-23 13:34:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 97 states have (on average 1.7938144329896908) internal successors, (174), 120 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-23 13:34:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 13:34:08,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:08,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:08,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:08,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:08,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1538115704, now seen corresponding path program 1 times [2022-07-23 13:34:08,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:08,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190597941] [2022-07-23 13:34:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:08,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:34:08,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:08,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190597941] [2022-07-23 13:34:08,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190597941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:08,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:08,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:34:08,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839091389] [2022-07-23 13:34:08,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:08,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 13:34:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 13:34:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 13:34:08,399 INFO L87 Difference]: Start difference. First operand has 127 states, 97 states have (on average 1.7938144329896908) internal successors, (174), 120 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2022-07-23 13:34:08,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:08,440 INFO L93 Difference]: Finished difference Result 249 states and 369 transitions. [2022-07-23 13:34:08,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 13:34:08,442 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 [2022-07-23 13:34:08,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:08,451 INFO L225 Difference]: With dead ends: 249 [2022-07-23 13:34:08,451 INFO L226 Difference]: Without dead ends: 101 [2022-07-23 13:34:08,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 13:34:08,463 INFO L413 NwaCegarLoop]: 167 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, 167 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:08,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-23 13:34:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-07-23 13:34:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.5921052631578947) internal successors, (121), 95 states have internal predecessors, (121), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 129 transitions. [2022-07-23 13:34:08,507 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 129 transitions. Word has length 9 [2022-07-23 13:34:08,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:08,507 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 129 transitions. [2022-07-23 13:34:08,508 INFO L496 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) [2022-07-23 13:34:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 129 transitions. [2022-07-23 13:34:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 13:34:08,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:08,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:08,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:34:08,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:08,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:08,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1539057052, now seen corresponding path program 1 times [2022-07-23 13:34:08,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:08,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770324641] [2022-07-23 13:34:08,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:08,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:34:08,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:08,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770324641] [2022-07-23 13:34:08,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770324641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:08,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:08,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:34:08,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580957511] [2022-07-23 13:34:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:08,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:34:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:08,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:34:08,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:34:08,594 INFO L87 Difference]: Start difference. First operand 101 states and 129 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) [2022-07-23 13:34:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:08,700 INFO L93 Difference]: Finished difference Result 261 states and 351 transitions. [2022-07-23 13:34:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:34:08,701 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 [2022-07-23 13:34:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:08,706 INFO L225 Difference]: With dead ends: 261 [2022-07-23 13:34:08,706 INFO L226 Difference]: Without dead ends: 163 [2022-07-23 13:34:08,709 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:34:08,711 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 106 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:08,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 331 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-07-23 13:34:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 150. [2022-07-23 13:34:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 124 states have (on average 1.5806451612903225) internal successors, (196), 143 states have internal predecessors, (196), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 204 transitions. [2022-07-23 13:34:08,726 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 204 transitions. Word has length 9 [2022-07-23 13:34:08,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:08,726 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 204 transitions. [2022-07-23 13:34:08,726 INFO L496 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) [2022-07-23 13:34:08,726 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 204 transitions. [2022-07-23 13:34:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-23 13:34:08,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:08,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:08,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:34:08,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:08,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash -798824771, now seen corresponding path program 1 times [2022-07-23 13:34:08,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:08,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593224636] [2022-07-23 13:34:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:34:08,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:08,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593224636] [2022-07-23 13:34:08,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593224636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:08,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:08,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:34:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383348612] [2022-07-23 13:34:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:08,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:34:08,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:34:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:34:08,760 INFO L87 Difference]: Start difference. First operand 150 states and 204 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) [2022-07-23 13:34:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:08,847 INFO L93 Difference]: Finished difference Result 185 states and 245 transitions. [2022-07-23 13:34:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:34:08,848 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 [2022-07-23 13:34:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:08,849 INFO L225 Difference]: With dead ends: 185 [2022-07-23 13:34:08,849 INFO L226 Difference]: Without dead ends: 182 [2022-07-23 13:34:08,849 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:34:08,850 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 161 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:08,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 444 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-23 13:34:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 157. [2022-07-23 13:34:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 131 states have (on average 1.5801526717557253) internal successors, (207), 150 states have internal predecessors, (207), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 215 transitions. [2022-07-23 13:34:08,858 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 215 transitions. Word has length 13 [2022-07-23 13:34:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:08,858 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 215 transitions. [2022-07-23 13:34:08,858 INFO L496 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) [2022-07-23 13:34:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 215 transitions. [2022-07-23 13:34:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-23 13:34:08,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:08,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:08,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:34:08,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1006235996, now seen corresponding path program 1 times [2022-07-23 13:34:08,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:08,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354332687] [2022-07-23 13:34:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:08,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:34:08,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:08,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354332687] [2022-07-23 13:34:08,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354332687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:08,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:08,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:34:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428338290] [2022-07-23 13:34:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:08,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:34:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:08,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:34:08,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:34:08,890 INFO L87 Difference]: Start difference. First operand 157 states and 215 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) [2022-07-23 13:34:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:08,961 INFO L93 Difference]: Finished difference Result 346 states and 474 transitions. [2022-07-23 13:34:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:34:08,962 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 [2022-07-23 13:34:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:08,963 INFO L225 Difference]: With dead ends: 346 [2022-07-23 13:34:08,963 INFO L226 Difference]: Without dead ends: 192 [2022-07-23 13:34:08,963 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:34:08,964 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 190 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:08,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 352 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-23 13:34:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 161. [2022-07-23 13:34:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 135 states have (on average 1.5555555555555556) internal successors, (210), 154 states have internal predecessors, (210), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 218 transitions. [2022-07-23 13:34:08,971 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 218 transitions. Word has length 14 [2022-07-23 13:34:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:08,971 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 218 transitions. [2022-07-23 13:34:08,972 INFO L496 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) [2022-07-23 13:34:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 218 transitions. [2022-07-23 13:34:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-23 13:34:08,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:08,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:08,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 13:34:08,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -490188718, now seen corresponding path program 1 times [2022-07-23 13:34:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:08,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144005252] [2022-07-23 13:34:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:08,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-23 13:34:08,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:08,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144005252] [2022-07-23 13:34:08,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144005252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:08,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:08,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:34:08,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647240573] [2022-07-23 13:34:08,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:08,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:34:08,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:34:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:34:08,992 INFO L87 Difference]: Start difference. First operand 161 states and 218 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2022-07-23 13:34:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:09,014 INFO L93 Difference]: Finished difference Result 169 states and 228 transitions. [2022-07-23 13:34:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:34:09,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 15 [2022-07-23 13:34:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:09,015 INFO L225 Difference]: With dead ends: 169 [2022-07-23 13:34:09,016 INFO L226 Difference]: Without dead ends: 168 [2022-07-23 13:34:09,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:34:09,017 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:09,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 236 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-23 13:34:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 159. [2022-07-23 13:34:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 134 states have (on average 1.544776119402985) internal successors, (207), 152 states have internal predecessors, (207), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 215 transitions. [2022-07-23 13:34:09,022 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 215 transitions. Word has length 15 [2022-07-23 13:34:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:09,022 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 215 transitions. [2022-07-23 13:34:09,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2022-07-23 13:34:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 215 transitions. [2022-07-23 13:34:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-23 13:34:09,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:09,023 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:09,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 13:34:09,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:09,024 INFO L85 PathProgramCache]: Analyzing trace with hash -490186458, now seen corresponding path program 1 times [2022-07-23 13:34:09,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:09,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359697215] [2022-07-23 13:34:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:09,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:34:09,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359697215] [2022-07-23 13:34:09,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359697215] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912210449] [2022-07-23 13:34:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:09,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:09,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:09,052 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) [2022-07-23 13:34:09,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:34:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:34:09,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:34:09,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:09,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912210449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:09,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:09,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-23 13:34:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563013209] [2022-07-23 13:34:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:09,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:34:09,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:34:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:34:09,126 INFO L87 Difference]: Start difference. First operand 159 states and 215 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) [2022-07-23 13:34:09,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:09,170 INFO L93 Difference]: Finished difference Result 197 states and 270 transitions. [2022-07-23 13:34:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:34:09,170 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 [2022-07-23 13:34:09,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:09,171 INFO L225 Difference]: With dead ends: 197 [2022-07-23 13:34:09,171 INFO L226 Difference]: Without dead ends: 195 [2022-07-23 13:34:09,172 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:34:09,172 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 26 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:09,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 373 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:09,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-23 13:34:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 161. [2022-07-23 13:34:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 136 states have (on average 1.536764705882353) internal successors, (209), 154 states have internal predecessors, (209), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 217 transitions. [2022-07-23 13:34:09,178 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 217 transitions. Word has length 15 [2022-07-23 13:34:09,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:09,178 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 217 transitions. [2022-07-23 13:34:09,178 INFO L496 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) [2022-07-23 13:34:09,178 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 217 transitions. [2022-07-23 13:34:09,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-23 13:34:09,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:09,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:09,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:09,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-23 13:34:09,399 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:09,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash -510502314, now seen corresponding path program 1 times [2022-07-23 13:34:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:09,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663412611] [2022-07-23 13:34:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 13:34:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:09,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663412611] [2022-07-23 13:34:09,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663412611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:09,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:09,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:34:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109121378] [2022-07-23 13:34:09,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:09,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:34:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:09,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:34:09,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:34:09,450 INFO L87 Difference]: Start difference. First operand 161 states and 217 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) [2022-07-23 13:34:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:09,494 INFO L93 Difference]: Finished difference Result 203 states and 279 transitions. [2022-07-23 13:34:09,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:34:09,494 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 [2022-07-23 13:34:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:09,495 INFO L225 Difference]: With dead ends: 203 [2022-07-23 13:34:09,495 INFO L226 Difference]: Without dead ends: 200 [2022-07-23 13:34:09,496 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:34:09,496 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 27 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:09,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 352 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-23 13:34:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 166. [2022-07-23 13:34:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 142 states have (on average 1.528169014084507) internal successors, (217), 159 states have internal predecessors, (217), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:09,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2022-07-23 13:34:09,501 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 19 [2022-07-23 13:34:09,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:09,502 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2022-07-23 13:34:09,502 INFO L496 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) [2022-07-23 13:34:09,502 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2022-07-23 13:34:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-23 13:34:09,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:09,503 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:09,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 13:34:09,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:09,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:09,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1172644954, now seen corresponding path program 1 times [2022-07-23 13:34:09,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:09,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671704767] [2022-07-23 13:34:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:09,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 13:34:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:09,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671704767] [2022-07-23 13:34:09,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671704767] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:09,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217711071] [2022-07-23 13:34:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:09,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:09,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:09,544 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) [2022-07-23 13:34:09,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:34:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:34:09,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 13:34:09,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:09,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217711071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:09,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:09,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-23 13:34:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402202007] [2022-07-23 13:34:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:09,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:34:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:09,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:34:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:34:09,610 INFO L87 Difference]: Start difference. First operand 166 states and 225 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) [2022-07-23 13:34:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:09,677 INFO L93 Difference]: Finished difference Result 248 states and 344 transitions. [2022-07-23 13:34:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:34:09,678 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 [2022-07-23 13:34:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:09,684 INFO L225 Difference]: With dead ends: 248 [2022-07-23 13:34:09,684 INFO L226 Difference]: Without dead ends: 245 [2022-07-23 13:34:09,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:34:09,684 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 182 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:09,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 347 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-23 13:34:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 203. [2022-07-23 13:34:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 178 states have (on average 1.5393258426966292) internal successors, (274), 195 states have internal predecessors, (274), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 282 transitions. [2022-07-23 13:34:09,690 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 282 transitions. Word has length 23 [2022-07-23 13:34:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:09,690 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 282 transitions. [2022-07-23 13:34:09,690 INFO L496 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) [2022-07-23 13:34:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 282 transitions. [2022-07-23 13:34:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-23 13:34:09,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:09,691 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:09,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:09,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-23 13:34:09,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash -742919346, now seen corresponding path program 1 times [2022-07-23 13:34:09,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:09,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146382026] [2022-07-23 13:34:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 13:34:09,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:09,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146382026] [2022-07-23 13:34:09,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146382026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:09,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157112285] [2022-07-23 13:34:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:09,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:09,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:09,956 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) [2022-07-23 13:34:09,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:34:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:09,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:34:09,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 13:34:10,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:10,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157112285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:10,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:10,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-23 13:34:10,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731882844] [2022-07-23 13:34:10,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:10,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:34:10,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:10,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:34:10,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:34:10,015 INFO L87 Difference]: Start difference. First operand 203 states and 282 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) [2022-07-23 13:34:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:10,077 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2022-07-23 13:34:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:34:10,078 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 [2022-07-23 13:34:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:10,079 INFO L225 Difference]: With dead ends: 236 [2022-07-23 13:34:10,079 INFO L226 Difference]: Without dead ends: 233 [2022-07-23 13:34:10,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:34:10,080 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 162 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:10,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 357 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-23 13:34:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 195. [2022-07-23 13:34:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 170 states have (on average 1.5235294117647058) internal successors, (259), 187 states have internal predecessors, (259), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 267 transitions. [2022-07-23 13:34:10,086 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 267 transitions. Word has length 25 [2022-07-23 13:34:10,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:10,086 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 267 transitions. [2022-07-23 13:34:10,086 INFO L496 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) [2022-07-23 13:34:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 267 transitions. [2022-07-23 13:34:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 13:34:10,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:10,087 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:10,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:10,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:10,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1044644110, now seen corresponding path program 1 times [2022-07-23 13:34:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:10,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527064764] [2022-07-23 13:34:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-23 13:34:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-23 13:34:10,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:10,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527064764] [2022-07-23 13:34:10,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527064764] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:10,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390884865] [2022-07-23 13:34:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:10,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:10,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:10,342 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) [2022-07-23 13:34:10,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:34:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:34:10,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-23 13:34:10,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:10,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390884865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:10,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:10,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-23 13:34:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453744198] [2022-07-23 13:34:10,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:10,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:34:10,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:34:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:34:10,409 INFO L87 Difference]: Start difference. First operand 195 states and 267 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 13:34:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:10,466 INFO L93 Difference]: Finished difference Result 225 states and 309 transitions. [2022-07-23 13:34:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:34:10,467 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-07-23 13:34:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:10,468 INFO L225 Difference]: With dead ends: 225 [2022-07-23 13:34:10,468 INFO L226 Difference]: Without dead ends: 222 [2022-07-23 13:34:10,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:34:10,469 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 180 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:10,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 336 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-23 13:34:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 183. [2022-07-23 13:34:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 161 states have (on average 1.484472049689441) internal successors, (239), 175 states have internal predecessors, (239), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 247 transitions. [2022-07-23 13:34:10,474 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 247 transitions. Word has length 30 [2022-07-23 13:34:10,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:10,474 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 247 transitions. [2022-07-23 13:34:10,475 INFO L496 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 13:34:10,475 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 247 transitions. [2022-07-23 13:34:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-23 13:34:10,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:10,475 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:10,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:10,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:10,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash -231907658, now seen corresponding path program 1 times [2022-07-23 13:34:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:10,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515294213] [2022-07-23 13:34:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:10,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-23 13:34:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-23 13:34:10,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:10,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515294213] [2022-07-23 13:34:10,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515294213] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:10,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422961656] [2022-07-23 13:34:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:10,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:10,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:10,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:10,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:34:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:10,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:34:10,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-23 13:34:10,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:10,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422961656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:10,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:10,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-23 13:34:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798288772] [2022-07-23 13:34:10,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:10,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:34:10,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:34:10,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:34:10,787 INFO L87 Difference]: Start difference. First operand 183 states and 247 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 13:34:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:10,843 INFO L93 Difference]: Finished difference Result 213 states and 288 transitions. [2022-07-23 13:34:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:34:10,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-07-23 13:34:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:10,844 INFO L225 Difference]: With dead ends: 213 [2022-07-23 13:34:10,844 INFO L226 Difference]: Without dead ends: 210 [2022-07-23 13:34:10,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:34:10,845 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 160 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:10,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 342 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-23 13:34:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 172. [2022-07-23 13:34:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 164 states have internal predecessors, (224), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 232 transitions. [2022-07-23 13:34:10,858 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 232 transitions. Word has length 32 [2022-07-23 13:34:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:10,859 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 232 transitions. [2022-07-23 13:34:10,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 13:34:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 232 transitions. [2022-07-23 13:34:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-23 13:34:10,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:10,860 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:10,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:11,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-23 13:34:11,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 665301411, now seen corresponding path program 1 times [2022-07-23 13:34:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:11,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535205937] [2022-07-23 13:34:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:11,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:11,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-23 13:34:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:11,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-23 13:34:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 13:34:11,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:11,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535205937] [2022-07-23 13:34:11,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535205937] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:11,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962203327] [2022-07-23 13:34:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:11,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:11,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:11,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:11,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:34:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:11,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 13:34:11,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 13:34:11,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-23 13:34:11,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962203327] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:34:11,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:34:11,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 8] total 19 [2022-07-23 13:34:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364937008] [2022-07-23 13:34:11,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 13:34:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 13:34:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:34:11,340 INFO L87 Difference]: Start difference. First operand 172 states and 232 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-23 13:34:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:11,825 INFO L93 Difference]: Finished difference Result 781 states and 1021 transitions. [2022-07-23 13:34:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-23 13:34:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 35 [2022-07-23 13:34:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:11,827 INFO L225 Difference]: With dead ends: 781 [2022-07-23 13:34:11,827 INFO L226 Difference]: Without dead ends: 527 [2022-07-23 13:34:11,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=1255, Unknown=0, NotChecked=0, Total=1482 [2022-07-23 13:34:11,829 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 479 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:11,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 1302 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:34:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-07-23 13:34:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 195. [2022-07-23 13:34:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 175 states have (on average 1.417142857142857) internal successors, (248), 186 states have internal predecessors, (248), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2022-07-23 13:34:11,839 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 35 [2022-07-23 13:34:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:11,839 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2022-07-23 13:34:11,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-23 13:34:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2022-07-23 13:34:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 13:34:11,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:11,840 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:11,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:12,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:12,057 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1787062927, now seen corresponding path program 1 times [2022-07-23 13:34:12,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:12,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076707156] [2022-07-23 13:34:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:12,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 13:34:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 13:34:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-23 13:34:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:12,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076707156] [2022-07-23 13:34:12,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076707156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:12,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:12,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 13:34:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011621676] [2022-07-23 13:34:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:12,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 13:34:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 13:34:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-23 13:34:12,135 INFO L87 Difference]: Start difference. First operand 195 states and 256 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:12,208 INFO L93 Difference]: Finished difference Result 429 states and 531 transitions. [2022-07-23 13:34:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 13:34:12,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2022-07-23 13:34:12,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:12,210 INFO L225 Difference]: With dead ends: 429 [2022-07-23 13:34:12,210 INFO L226 Difference]: Without dead ends: 366 [2022-07-23 13:34:12,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-23 13:34:12,211 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 223 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:12,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 748 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-07-23 13:34:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 195. [2022-07-23 13:34:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 175 states have (on average 1.4057142857142857) internal successors, (246), 186 states have internal predecessors, (246), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 13:34:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 254 transitions. [2022-07-23 13:34:12,218 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 254 transitions. Word has length 55 [2022-07-23 13:34:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:12,218 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 254 transitions. [2022-07-23 13:34:12,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 254 transitions. [2022-07-23 13:34:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-23 13:34:12,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:12,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:12,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-23 13:34:12,219 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash -43742622, now seen corresponding path program 2 times [2022-07-23 13:34:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:12,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862844822] [2022-07-23 13:34:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 13:34:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 13:34:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:12,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:12,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862844822] [2022-07-23 13:34:12,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862844822] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:12,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671681159] [2022-07-23 13:34:12,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:34:12,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:12,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:12,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:12,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:34:12,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 13:34:12,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:34:12,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 13:34:12,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-23 13:34:12,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:12,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671681159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:12,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:12,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2022-07-23 13:34:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404985697] [2022-07-23 13:34:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 13:34:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 13:34:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-23 13:34:12,359 INFO L87 Difference]: Start difference. First operand 195 states and 254 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:12,426 INFO L93 Difference]: Finished difference Result 363 states and 453 transitions. [2022-07-23 13:34:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 13:34:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2022-07-23 13:34:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:12,428 INFO L225 Difference]: With dead ends: 363 [2022-07-23 13:34:12,428 INFO L226 Difference]: Without dead ends: 311 [2022-07-23 13:34:12,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-23 13:34:12,429 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 117 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:12,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 870 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-23 13:34:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 222. [2022-07-23 13:34:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 201 states have (on average 1.3781094527363185) internal successors, (277), 212 states have internal predecessors, (277), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-23 13:34:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 286 transitions. [2022-07-23 13:34:12,436 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 286 transitions. Word has length 59 [2022-07-23 13:34:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:12,436 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 286 transitions. [2022-07-23 13:34:12,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 286 transitions. [2022-07-23 13:34:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-23 13:34:12,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:12,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:12,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:12,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:12,654 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash -853089248, now seen corresponding path program 1 times [2022-07-23 13:34:12,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:12,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774563340] [2022-07-23 13:34:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:12,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 13:34:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 13:34:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:12,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:12,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774563340] [2022-07-23 13:34:12,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774563340] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:12,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886760455] [2022-07-23 13:34:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:12,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:12,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:12,702 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:12,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 13:34:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:12,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:34:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 13:34:12,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:12,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886760455] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:34:12,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:34:12,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2022-07-23 13:34:12,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719341719] [2022-07-23 13:34:12,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:12,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-23 13:34:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 13:34:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-07-23 13:34:12,881 INFO L87 Difference]: Start difference. First operand 222 states and 286 transitions. Second operand has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-23 13:34:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:13,296 INFO L93 Difference]: Finished difference Result 1123 states and 1475 transitions. [2022-07-23 13:34:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-23 13:34:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2022-07-23 13:34:13,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:13,299 INFO L225 Difference]: With dead ends: 1123 [2022-07-23 13:34:13,299 INFO L226 Difference]: Without dead ends: 937 [2022-07-23 13:34:13,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=346, Invalid=710, Unknown=0, NotChecked=0, Total=1056 [2022-07-23 13:34:13,300 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 709 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:13,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 607 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:34:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-07-23 13:34:13,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 242. [2022-07-23 13:34:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 221 states have (on average 1.3619909502262444) internal successors, (301), 232 states have internal predecessors, (301), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-23 13:34:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 310 transitions. [2022-07-23 13:34:13,313 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 310 transitions. Word has length 59 [2022-07-23 13:34:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:13,313 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 310 transitions. [2022-07-23 13:34:13,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-23 13:34:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 310 transitions. [2022-07-23 13:34:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-23 13:34:13,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:13,314 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:13,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:13,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-23 13:34:13,535 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:13,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:13,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1593333004, now seen corresponding path program 1 times [2022-07-23 13:34:13,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:13,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460853149] [2022-07-23 13:34:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:13,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:13,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-23 13:34:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-23 13:34:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:13,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:13,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460853149] [2022-07-23 13:34:13,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460853149] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:13,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558139396] [2022-07-23 13:34:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:13,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:13,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:13,592 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:13,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 13:34:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:13,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:34:13,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 13:34:13,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:13,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558139396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:13,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:13,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-07-23 13:34:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592826941] [2022-07-23 13:34:13,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:13,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:34:13,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:13,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:34:13,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:34:13,676 INFO L87 Difference]: Start difference. First operand 242 states and 310 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 13:34:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:13,826 INFO L93 Difference]: Finished difference Result 557 states and 716 transitions. [2022-07-23 13:34:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 13:34:13,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2022-07-23 13:34:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:13,827 INFO L225 Difference]: With dead ends: 557 [2022-07-23 13:34:13,827 INFO L226 Difference]: Without dead ends: 347 [2022-07-23 13:34:13,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-23 13:34:13,828 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 59 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:13,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 426 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:13,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-23 13:34:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 274. [2022-07-23 13:34:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 253 states have (on average 1.3359683794466404) internal successors, (338), 264 states have internal predecessors, (338), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-23 13:34:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 347 transitions. [2022-07-23 13:34:13,838 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 347 transitions. Word has length 62 [2022-07-23 13:34:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:13,838 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 347 transitions. [2022-07-23 13:34:13,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 13:34:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 347 transitions. [2022-07-23 13:34:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-23 13:34:13,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:13,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:13,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:14,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-23 13:34:14,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:14,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:14,054 INFO L85 PathProgramCache]: Analyzing trace with hash -668242174, now seen corresponding path program 1 times [2022-07-23 13:34:14,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:14,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912099332] [2022-07-23 13:34:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:14,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:14,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-23 13:34:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-23 13:34:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:14,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:14,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912099332] [2022-07-23 13:34:14,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912099332] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:14,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501331976] [2022-07-23 13:34:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:14,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:14,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:14,166 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:14,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 13:34:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:14,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 13:34:14,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 13:34:14,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:14,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501331976] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:34:14,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:34:14,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-07-23 13:34:14,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993198847] [2022-07-23 13:34:14,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:14,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 13:34:14,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 13:34:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:34:14,362 INFO L87 Difference]: Start difference. First operand 274 states and 347 transitions. Second operand has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 13 states have internal predecessors, (95), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-23 13:34:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:14,925 INFO L93 Difference]: Finished difference Result 900 states and 1134 transitions. [2022-07-23 13:34:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-23 13:34:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 13 states have internal predecessors, (95), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-23 13:34:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:14,927 INFO L225 Difference]: With dead ends: 900 [2022-07-23 13:34:14,927 INFO L226 Difference]: Without dead ends: 626 [2022-07-23 13:34:14,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2022-07-23 13:34:14,928 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 526 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:14,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 707 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:34:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-07-23 13:34:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 273. [2022-07-23 13:34:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 252 states have (on average 1.3134920634920635) internal successors, (331), 263 states have internal predecessors, (331), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-23 13:34:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 340 transitions. [2022-07-23 13:34:14,941 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 340 transitions. Word has length 67 [2022-07-23 13:34:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:14,941 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 340 transitions. [2022-07-23 13:34:14,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 13 states have internal predecessors, (95), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-23 13:34:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 340 transitions. [2022-07-23 13:34:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-23 13:34:14,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:14,942 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:14,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-23 13:34:15,158 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1143943328, now seen corresponding path program 2 times [2022-07-23 13:34:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:15,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530148727] [2022-07-23 13:34:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:15,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-23 13:34:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-23 13:34:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 97 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:15,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:15,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530148727] [2022-07-23 13:34:15,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530148727] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:15,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226938713] [2022-07-23 13:34:15,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:34:15,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:15,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:15,259 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:15,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 13:34:15,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 13:34:15,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:34:15,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 13:34:15,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-23 13:34:15,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226938713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:15,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:15,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2022-07-23 13:34:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547456131] [2022-07-23 13:34:15,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:15,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 13:34:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:15,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 13:34:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:34:15,382 INFO L87 Difference]: Start difference. First operand 273 states and 340 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:15,459 INFO L93 Difference]: Finished difference Result 406 states and 491 transitions. [2022-07-23 13:34:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 13:34:15,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 79 [2022-07-23 13:34:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:15,463 INFO L225 Difference]: With dead ends: 406 [2022-07-23 13:34:15,463 INFO L226 Difference]: Without dead ends: 359 [2022-07-23 13:34:15,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-07-23 13:34:15,464 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 175 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:15,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 855 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-23 13:34:15,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 271. [2022-07-23 13:34:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 250 states have (on average 1.308) internal successors, (327), 261 states have internal predecessors, (327), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-23 13:34:15,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 336 transitions. [2022-07-23 13:34:15,475 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 336 transitions. Word has length 79 [2022-07-23 13:34:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:15,475 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 336 transitions. [2022-07-23 13:34:15,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 336 transitions. [2022-07-23 13:34:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-23 13:34:15,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:15,484 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:15,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:15,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-23 13:34:15,689 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:15,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1916731709, now seen corresponding path program 1 times [2022-07-23 13:34:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:15,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667859102] [2022-07-23 13:34:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:15,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-23 13:34:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-23 13:34:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-23 13:34:15,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:15,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667859102] [2022-07-23 13:34:15,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667859102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:15,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:15,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 13:34:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811661313] [2022-07-23 13:34:15,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:15,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 13:34:15,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 13:34:15,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:34:15,731 INFO L87 Difference]: Start difference. First operand 271 states and 336 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:15,839 INFO L93 Difference]: Finished difference Result 698 states and 861 transitions. [2022-07-23 13:34:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 13:34:15,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 85 [2022-07-23 13:34:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:15,841 INFO L225 Difference]: With dead ends: 698 [2022-07-23 13:34:15,841 INFO L226 Difference]: Without dead ends: 484 [2022-07-23 13:34:15,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:34:15,842 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 200 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:15,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 875 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-23 13:34:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 276. [2022-07-23 13:34:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 255 states have (on average 1.3019607843137255) internal successors, (332), 266 states have internal predecessors, (332), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-23 13:34:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 341 transitions. [2022-07-23 13:34:15,857 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 341 transitions. Word has length 85 [2022-07-23 13:34:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:15,857 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 341 transitions. [2022-07-23 13:34:15,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 341 transitions. [2022-07-23 13:34:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-23 13:34:15,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:15,858 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:15,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-23 13:34:15,858 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:15,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:15,859 INFO L85 PathProgramCache]: Analyzing trace with hash 326020878, now seen corresponding path program 1 times [2022-07-23 13:34:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:15,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511687722] [2022-07-23 13:34:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:15,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-23 13:34:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-23 13:34:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 97 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-23 13:34:15,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511687722] [2022-07-23 13:34:15,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511687722] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821749504] [2022-07-23 13:34:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:15,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:15,972 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:15,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-23 13:34:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:16,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 13:34:16,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 26 proven. 87 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-23 13:34:16,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 97 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-23 13:34:16,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821749504] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:34:16,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:34:16,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2022-07-23 13:34:16,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494357622] [2022-07-23 13:34:16,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:16,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-23 13:34:16,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:16,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-23 13:34:16,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2022-07-23 13:34:16,324 INFO L87 Difference]: Start difference. First operand 276 states and 341 transitions. Second operand has 27 states, 27 states have (on average 5.962962962962963) internal successors, (161), 26 states have internal predecessors, (161), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-23 13:34:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:17,185 INFO L93 Difference]: Finished difference Result 2056 states and 2649 transitions. [2022-07-23 13:34:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-23 13:34:17,186 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.962962962962963) internal successors, (161), 26 states have internal predecessors, (161), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-07-23 13:34:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:17,190 INFO L225 Difference]: With dead ends: 2056 [2022-07-23 13:34:17,190 INFO L226 Difference]: Without dead ends: 1830 [2022-07-23 13:34:17,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1121, Invalid=2301, Unknown=0, NotChecked=0, Total=3422 [2022-07-23 13:34:17,192 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1921 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:17,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1921 Valid, 868 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:34:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2022-07-23 13:34:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 327. [2022-07-23 13:34:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 306 states have (on average 1.2908496732026145) internal successors, (395), 317 states have internal predecessors, (395), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-23 13:34:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 404 transitions. [2022-07-23 13:34:17,214 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 404 transitions. Word has length 86 [2022-07-23 13:34:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:17,214 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 404 transitions. [2022-07-23 13:34:17,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.962962962962963) internal successors, (161), 26 states have internal predecessors, (161), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-23 13:34:17,214 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 404 transitions. [2022-07-23 13:34:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-23 13:34:17,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:17,215 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:17,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:17,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:17,431 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1204355564, now seen corresponding path program 1 times [2022-07-23 13:34:17,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:17,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330162712] [2022-07-23 13:34:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:17,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:17,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 13:34:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-23 13:34:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 4 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-23 13:34:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:17,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330162712] [2022-07-23 13:34:17,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330162712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:17,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92454139] [2022-07-23 13:34:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:17,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:17,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:17,559 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:17,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-23 13:34:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:17,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 13:34:17,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-23 13:34:17,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:17,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92454139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:17,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:17,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-07-23 13:34:17,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170490843] [2022-07-23 13:34:17,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:17,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 13:34:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 13:34:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-23 13:34:17,704 INFO L87 Difference]: Start difference. First operand 327 states and 404 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:17,897 INFO L93 Difference]: Finished difference Result 662 states and 793 transitions. [2022-07-23 13:34:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-23 13:34:17,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 94 [2022-07-23 13:34:17,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:17,899 INFO L225 Difference]: With dead ends: 662 [2022-07-23 13:34:17,899 INFO L226 Difference]: Without dead ends: 610 [2022-07-23 13:34:17,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2022-07-23 13:34:17,900 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 302 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:17,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1675 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-07-23 13:34:17,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 338. [2022-07-23 13:34:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 316 states have (on average 1.2848101265822784) internal successors, (406), 327 states have internal predecessors, (406), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-23 13:34:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 416 transitions. [2022-07-23 13:34:17,919 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 416 transitions. Word has length 94 [2022-07-23 13:34:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:17,919 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 416 transitions. [2022-07-23 13:34:17,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 416 transitions. [2022-07-23 13:34:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-23 13:34:17,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:17,920 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:17,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:18,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-23 13:34:18,137 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1204357486, now seen corresponding path program 1 times [2022-07-23 13:34:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:18,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912839821] [2022-07-23 13:34:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:18,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 13:34:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-23 13:34:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-23 13:34:18,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:18,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912839821] [2022-07-23 13:34:18,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912839821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:18,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:18,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 13:34:18,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753379912] [2022-07-23 13:34:18,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:18,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 13:34:18,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 13:34:18,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:34:18,195 INFO L87 Difference]: Start difference. First operand 338 states and 416 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:18,370 INFO L93 Difference]: Finished difference Result 645 states and 773 transitions. [2022-07-23 13:34:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 13:34:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 94 [2022-07-23 13:34:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:18,372 INFO L225 Difference]: With dead ends: 645 [2022-07-23 13:34:18,372 INFO L226 Difference]: Without dead ends: 590 [2022-07-23 13:34:18,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:34:18,373 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 265 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:18,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 917 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-07-23 13:34:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 361. [2022-07-23 13:34:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 338 states have (on average 1.2840236686390532) internal successors, (434), 349 states have internal predecessors, (434), 4 states have call successors, (4), 4 states have call predecessors, (4), 7 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-23 13:34:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 445 transitions. [2022-07-23 13:34:18,393 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 445 transitions. Word has length 94 [2022-07-23 13:34:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:18,393 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 445 transitions. [2022-07-23 13:34:18,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 445 transitions. [2022-07-23 13:34:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-23 13:34:18,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:18,394 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:18,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-23 13:34:18,394 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:18,395 INFO L85 PathProgramCache]: Analyzing trace with hash 395008938, now seen corresponding path program 1 times [2022-07-23 13:34:18,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:18,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436226328] [2022-07-23 13:34:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:18,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 13:34:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-23 13:34:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 4 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-23 13:34:18,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:18,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436226328] [2022-07-23 13:34:18,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436226328] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:18,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530559814] [2022-07-23 13:34:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:18,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:18,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:18,530 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:18,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-23 13:34:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:18,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-23 13:34:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-23 13:34:18,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-23 13:34:18,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530559814] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:18,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:34:18,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 23 [2022-07-23 13:34:18,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421551257] [2022-07-23 13:34:18,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:18,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 13:34:18,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 13:34:18,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2022-07-23 13:34:18,929 INFO L87 Difference]: Start difference. First operand 361 states and 445 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:19,041 INFO L93 Difference]: Finished difference Result 465 states and 563 transitions. [2022-07-23 13:34:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 13:34:19,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 94 [2022-07-23 13:34:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:19,042 INFO L225 Difference]: With dead ends: 465 [2022-07-23 13:34:19,042 INFO L226 Difference]: Without dead ends: 402 [2022-07-23 13:34:19,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-07-23 13:34:19,043 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 46 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:19,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 706 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-07-23 13:34:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 355. [2022-07-23 13:34:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 333 states have (on average 1.2852852852852852) internal successors, (428), 344 states have internal predecessors, (428), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-23 13:34:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 438 transitions. [2022-07-23 13:34:19,062 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 438 transitions. Word has length 94 [2022-07-23 13:34:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:19,063 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 438 transitions. [2022-07-23 13:34:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 438 transitions. [2022-07-23 13:34:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-23 13:34:19,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:19,064 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:19,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:19,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:19,282 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:19,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash 62652704, now seen corresponding path program 1 times [2022-07-23 13:34:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:19,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511541858] [2022-07-23 13:34:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 13:34:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-23 13:34:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-23 13:34:19,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:19,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511541858] [2022-07-23 13:34:19,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511541858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:19,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:34:19,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 13:34:19,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397758362] [2022-07-23 13:34:19,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:19,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 13:34:19,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:19,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 13:34:19,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:34:19,346 INFO L87 Difference]: Start difference. First operand 355 states and 438 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:19,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:19,528 INFO L93 Difference]: Finished difference Result 850 states and 1034 transitions. [2022-07-23 13:34:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 13:34:19,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 95 [2022-07-23 13:34:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:19,530 INFO L225 Difference]: With dead ends: 850 [2022-07-23 13:34:19,530 INFO L226 Difference]: Without dead ends: 608 [2022-07-23 13:34:19,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:34:19,531 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 228 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:19,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 900 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:34:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-07-23 13:34:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 362. [2022-07-23 13:34:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 340 states have (on average 1.285294117647059) internal successors, (437), 351 states have internal predecessors, (437), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-23 13:34:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 447 transitions. [2022-07-23 13:34:19,572 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 447 transitions. Word has length 95 [2022-07-23 13:34:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:19,572 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 447 transitions. [2022-07-23 13:34:19,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 447 transitions. [2022-07-23 13:34:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-23 13:34:19,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:19,573 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:19,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-23 13:34:19,573 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:19,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:19,573 INFO L85 PathProgramCache]: Analyzing trace with hash 796776583, now seen corresponding path program 1 times [2022-07-23 13:34:19,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:19,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064625099] [2022-07-23 13:34:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:19,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 13:34:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-23 13:34:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 95 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-23 13:34:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:19,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064625099] [2022-07-23 13:34:19,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064625099] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:19,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556061827] [2022-07-23 13:34:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:19,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:19,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:19,748 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:19,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-23 13:34:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:19,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 13:34:19,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-23 13:34:20,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-23 13:34:20,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556061827] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:34:20,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:34:20,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 21 [2022-07-23 13:34:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175160330] [2022-07-23 13:34:20,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:20,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 13:34:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:20,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 13:34:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-07-23 13:34:20,115 INFO L87 Difference]: Start difference. First operand 362 states and 447 transitions. Second operand has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-23 13:34:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:20,779 INFO L93 Difference]: Finished difference Result 1047 states and 1303 transitions. [2022-07-23 13:34:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-23 13:34:20,780 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 96 [2022-07-23 13:34:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:20,782 INFO L225 Difference]: With dead ends: 1047 [2022-07-23 13:34:20,782 INFO L226 Difference]: Without dead ends: 775 [2022-07-23 13:34:20,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2022-07-23 13:34:20,784 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 581 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:20,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1542 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:34:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-07-23 13:34:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 383. [2022-07-23 13:34:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 359 states have (on average 1.267409470752089) internal successors, (455), 368 states have internal predecessors, (455), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:34:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 470 transitions. [2022-07-23 13:34:20,822 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 470 transitions. Word has length 96 [2022-07-23 13:34:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:20,822 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 470 transitions. [2022-07-23 13:34:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-23 13:34:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 470 transitions. [2022-07-23 13:34:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-23 13:34:20,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:20,826 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:20,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:21,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:21,042 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:21,042 INFO L85 PathProgramCache]: Analyzing trace with hash -831220988, now seen corresponding path program 1 times [2022-07-23 13:34:21,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:21,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046210983] [2022-07-23 13:34:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:21,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-23 13:34:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-23 13:34:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 4 proven. 115 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:21,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:21,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046210983] [2022-07-23 13:34:21,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046210983] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:21,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071901422] [2022-07-23 13:34:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:21,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:21,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:21,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:21,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-23 13:34:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 13:34:21,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-23 13:34:21,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-23 13:34:21,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071901422] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:21,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:34:21,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12, 8] total 19 [2022-07-23 13:34:21,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784551458] [2022-07-23 13:34:21,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:21,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:34:21,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:34:21,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:34:21,427 INFO L87 Difference]: Start difference. First operand 383 states and 470 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:21,461 INFO L93 Difference]: Finished difference Result 461 states and 559 transitions. [2022-07-23 13:34:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:34:21,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2022-07-23 13:34:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:21,463 INFO L225 Difference]: With dead ends: 461 [2022-07-23 13:34:21,463 INFO L226 Difference]: Without dead ends: 410 [2022-07-23 13:34:21,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:34:21,464 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 8 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:21,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 225 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-07-23 13:34:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 401. [2022-07-23 13:34:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 377 states have (on average 1.259946949602122) internal successors, (475), 386 states have internal predecessors, (475), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:34:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 490 transitions. [2022-07-23 13:34:21,489 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 490 transitions. Word has length 107 [2022-07-23 13:34:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:21,489 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 490 transitions. [2022-07-23 13:34:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 490 transitions. [2022-07-23 13:34:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-23 13:34:21,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:21,490 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:21,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:21,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-23 13:34:21,705 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:21,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:21,705 INFO L85 PathProgramCache]: Analyzing trace with hash -573055550, now seen corresponding path program 1 times [2022-07-23 13:34:21,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:21,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379710931] [2022-07-23 13:34:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-23 13:34:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-23 13:34:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 4 proven. 115 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:21,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:21,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379710931] [2022-07-23 13:34:21,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379710931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:21,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789423519] [2022-07-23 13:34:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:21,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:21,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:21,895 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:21,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-23 13:34:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:21,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 13:34:21,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-23 13:34:22,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:34:22,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789423519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:34:22,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:34:22,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-23 13:34:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279444068] [2022-07-23 13:34:22,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:34:22,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 13:34:22,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:22,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 13:34:22,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:34:22,053 INFO L87 Difference]: Start difference. First operand 401 states and 490 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:22,130 INFO L93 Difference]: Finished difference Result 474 states and 573 transitions. [2022-07-23 13:34:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 13:34:22,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2022-07-23 13:34:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:22,132 INFO L225 Difference]: With dead ends: 474 [2022-07-23 13:34:22,132 INFO L226 Difference]: Without dead ends: 444 [2022-07-23 13:34:22,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:34:22,133 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 45 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:22,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 661 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:34:22,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-23 13:34:22,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 407. [2022-07-23 13:34:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 383 states have (on average 1.2584856396866841) internal successors, (482), 392 states have internal predecessors, (482), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:34:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 497 transitions. [2022-07-23 13:34:22,161 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 497 transitions. Word has length 107 [2022-07-23 13:34:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:22,161 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 497 transitions. [2022-07-23 13:34:22,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:34:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 497 transitions. [2022-07-23 13:34:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-23 13:34:22,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:22,162 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:22,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:22,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-23 13:34:22,379 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:22,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:22,379 INFO L85 PathProgramCache]: Analyzing trace with hash -573055488, now seen corresponding path program 1 times [2022-07-23 13:34:22,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:22,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818887503] [2022-07-23 13:34:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:22,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:22,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-23 13:34:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:22,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-23 13:34:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 4 proven. 115 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:22,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:22,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818887503] [2022-07-23 13:34:22,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818887503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:22,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038336801] [2022-07-23 13:34:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:22,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:22,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:22,544 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:22,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-23 13:34:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:22,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 13:34:22,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-23 13:34:22,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-23 13:34:23,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038336801] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:34:23,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:34:23,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2022-07-23 13:34:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086286493] [2022-07-23 13:34:23,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:23,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-23 13:34:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-23 13:34:23,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-07-23 13:34:23,222 INFO L87 Difference]: Start difference. First operand 407 states and 497 transitions. Second operand has 26 states, 26 states have (on average 6.269230769230769) internal successors, (163), 23 states have internal predecessors, (163), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-23 13:34:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:34:24,412 INFO L93 Difference]: Finished difference Result 1214 states and 1509 transitions. [2022-07-23 13:34:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-23 13:34:24,413 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.269230769230769) internal successors, (163), 23 states have internal predecessors, (163), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 107 [2022-07-23 13:34:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:34:24,415 INFO L225 Difference]: With dead ends: 1214 [2022-07-23 13:34:24,415 INFO L226 Difference]: Without dead ends: 897 [2022-07-23 13:34:24,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=401, Invalid=2251, Unknown=0, NotChecked=0, Total=2652 [2022-07-23 13:34:24,416 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 919 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 13:34:24,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1579 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 13:34:24,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-07-23 13:34:24,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 452. [2022-07-23 13:34:24,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 431 states have (on average 1.234338747099768) internal successors, (532), 437 states have internal predecessors, (532), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:34:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 547 transitions. [2022-07-23 13:34:24,442 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 547 transitions. Word has length 107 [2022-07-23 13:34:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:34:24,442 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 547 transitions. [2022-07-23 13:34:24,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.269230769230769) internal successors, (163), 23 states have internal predecessors, (163), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-23 13:34:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 547 transitions. [2022-07-23 13:34:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-23 13:34:24,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:34:24,444 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:34:24,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-23 13:34:24,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-23 13:34:24,659 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:34:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:34:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash 104070786, now seen corresponding path program 1 times [2022-07-23 13:34:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:34:24,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228463121] [2022-07-23 13:34:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:34:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:34:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:34:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-23 13:34:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-23 13:34:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 150 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:24,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:34:24,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228463121] [2022-07-23 13:34:24,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228463121] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:34:24,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232024790] [2022-07-23 13:34:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:34:24,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:34:24,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:34:24,817 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:34:24,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-23 13:34:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:34:24,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-23 13:34:24,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:34:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 26 proven. 140 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 13:34:25,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:34:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 150 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:34:25,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232024790] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:34:25,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:34:25,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2022-07-23 13:34:25,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542846915] [2022-07-23 13:34:25,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:34:25,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-23 13:34:25,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:34:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-23 13:34:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2022-07-23 13:34:25,470 INFO L87 Difference]: Start difference. First operand 452 states and 547 transitions. Second operand has 32 states, 32 states have (on average 6.28125) internal successors, (201), 31 states have internal predecessors, (201), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-23 13:34:41,371 WARN L233 SmtUtils]: Spent 15.53s on a formula simplification. DAG size of input: 57 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 13:35:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:35:29,310 INFO L93 Difference]: Finished difference Result 1674 states and 2107 transitions. [2022-07-23 13:35:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-23 13:35:29,311 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.28125) internal successors, (201), 31 states have internal predecessors, (201), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2022-07-23 13:35:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:35:29,319 INFO L225 Difference]: With dead ends: 1674 [2022-07-23 13:35:29,319 INFO L226 Difference]: Without dead ends: 1236 [2022-07-23 13:35:29,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 62.6s TimeCoverageRelationStatistics Valid=1430, Invalid=4409, Unknown=13, NotChecked=0, Total=5852 [2022-07-23 13:35:29,324 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1048 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:35:29,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 2306 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-23 13:35:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2022-07-23 13:35:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 520. [2022-07-23 13:35:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 499 states have (on average 1.2124248496993988) internal successors, (605), 505 states have internal predecessors, (605), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:35:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 620 transitions. [2022-07-23 13:35:29,366 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 620 transitions. Word has length 113 [2022-07-23 13:35:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:35:29,367 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 620 transitions. [2022-07-23 13:35:29,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.28125) internal successors, (201), 31 states have internal predecessors, (201), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-23 13:35:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 620 transitions. [2022-07-23 13:35:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-23 13:35:29,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:35:29,370 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:35:29,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-23 13:35:29,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-23 13:35:29,588 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:35:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:35:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash -366435744, now seen corresponding path program 1 times [2022-07-23 13:35:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:35:29,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287806180] [2022-07-23 13:35:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:35:29,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:35:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:35:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:35:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-23 13:35:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:29,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-23 13:35:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 4 proven. 493 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:35:29,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:35:29,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287806180] [2022-07-23 13:35:29,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287806180] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:35:29,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092487182] [2022-07-23 13:35:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:35:29,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:35:29,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:35:29,863 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:35:29,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-23 13:35:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:29,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 13:35:29,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:35:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 26 proven. 483 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 13:35:30,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:35:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 4 proven. 493 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:35:30,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092487182] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:35:30,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:35:30,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 51 [2022-07-23 13:35:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558092711] [2022-07-23 13:35:30,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:35:30,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-23 13:35:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:35:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-23 13:35:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=848, Invalid=1702, Unknown=0, NotChecked=0, Total=2550 [2022-07-23 13:35:30,853 INFO L87 Difference]: Start difference. First operand 520 states and 620 transitions. Second operand has 51 states, 51 states have (on average 5.470588235294118) internal successors, (279), 50 states have internal predecessors, (279), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-23 13:35:33,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:35:33,914 INFO L93 Difference]: Finished difference Result 4243 states and 5443 transitions. [2022-07-23 13:35:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-07-23 13:35:33,915 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.470588235294118) internal successors, (279), 50 states have internal predecessors, (279), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 135 [2022-07-23 13:35:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:35:33,925 INFO L225 Difference]: With dead ends: 4243 [2022-07-23 13:35:33,925 INFO L226 Difference]: Without dead ends: 3838 [2022-07-23 13:35:33,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3613 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4165, Invalid=8717, Unknown=0, NotChecked=0, Total=12882 [2022-07-23 13:35:33,929 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 4751 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4751 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:35:33,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4751 Valid, 1402 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 13:35:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2022-07-23 13:35:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 592. [2022-07-23 13:35:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 571 states have (on average 1.2084063047285465) internal successors, (690), 577 states have internal predecessors, (690), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:35:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 705 transitions. [2022-07-23 13:35:34,020 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 705 transitions. Word has length 135 [2022-07-23 13:35:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:35:34,020 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 705 transitions. [2022-07-23 13:35:34,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.470588235294118) internal successors, (279), 50 states have internal predecessors, (279), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-23 13:35:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 705 transitions. [2022-07-23 13:35:34,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-23 13:35:34,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:35:34,022 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:35:34,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-23 13:35:34,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:35:34,235 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:35:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:35:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 819115458, now seen corresponding path program 2 times [2022-07-23 13:35:34,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:35:34,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062761086] [2022-07-23 13:35:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:35:34,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:35:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:35:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:35:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-23 13:35:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-23 13:35:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 4 proven. 775 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:35:34,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:35:34,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062761086] [2022-07-23 13:35:34,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062761086] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:35:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226680619] [2022-07-23 13:35:34,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:35:34,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:35:34,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:35:34,632 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:35:34,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-23 13:35:34,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 13:35:34,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:35:34,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-23 13:35:34,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:35:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2022-07-23 13:35:34,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:35:34,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226680619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:35:34,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:35:34,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [23] total 29 [2022-07-23 13:35:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215360631] [2022-07-23 13:35:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:35:34,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 13:35:34,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:35:34,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 13:35:34,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2022-07-23 13:35:34,887 INFO L87 Difference]: Start difference. First operand 592 states and 705 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:35:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:35:35,059 INFO L93 Difference]: Finished difference Result 632 states and 749 transitions. [2022-07-23 13:35:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 13:35:35,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 163 [2022-07-23 13:35:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:35:35,061 INFO L225 Difference]: With dead ends: 632 [2022-07-23 13:35:35,061 INFO L226 Difference]: Without dead ends: 610 [2022-07-23 13:35:35,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2022-07-23 13:35:35,061 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 64 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:35:35,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 667 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:35:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-07-23 13:35:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2022-07-23 13:35:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 587 states have (on average 1.2044293015332197) internal successors, (707), 593 states have internal predecessors, (707), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (10), 10 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-23 13:35:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 722 transitions. [2022-07-23 13:35:35,100 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 722 transitions. Word has length 163 [2022-07-23 13:35:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:35:35,101 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 722 transitions. [2022-07-23 13:35:35,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 13:35:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 722 transitions. [2022-07-23 13:35:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-23 13:35:35,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:35:35,102 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:35:35,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-23 13:35:35,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:35:35,318 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:35:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:35:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1259157779, now seen corresponding path program 1 times [2022-07-23 13:35:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:35:35,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406859001] [2022-07-23 13:35:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:35:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:35:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:35:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:35:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-23 13:35:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 13:35:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 4 proven. 793 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-23 13:35:35,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:35:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406859001] [2022-07-23 13:35:35,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406859001] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:35:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914081099] [2022-07-23 13:35:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:35:35,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:35:35,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:35:35,703 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:35:35,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-23 13:35:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:35,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-23 13:35:35,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:35:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2022-07-23 13:35:36,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:35:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2022-07-23 13:35:36,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914081099] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:35:36,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:35:36,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 9] total 39 [2022-07-23 13:35:36,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202862188] [2022-07-23 13:35:36,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:35:36,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-23 13:35:36,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:35:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-23 13:35:36,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2022-07-23 13:35:36,514 INFO L87 Difference]: Start difference. First operand 608 states and 722 transitions. Second operand has 39 states, 39 states have (on average 4.538461538461538) internal successors, (177), 36 states have internal predecessors, (177), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-23 13:35:40,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:35:40,642 INFO L93 Difference]: Finished difference Result 1978 states and 2420 transitions. [2022-07-23 13:35:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-23 13:35:40,645 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.538461538461538) internal successors, (177), 36 states have internal predecessors, (177), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 163 [2022-07-23 13:35:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:35:40,648 INFO L225 Difference]: With dead ends: 1978 [2022-07-23 13:35:40,648 INFO L226 Difference]: Without dead ends: 1507 [2022-07-23 13:35:40,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2720 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1717, Invalid=10493, Unknown=0, NotChecked=0, Total=12210 [2022-07-23 13:35:40,652 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1883 mSDsluCounter, 5438 mSDsCounter, 0 mSdLazyCounter, 3155 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 5685 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 3155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-23 13:35:40,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 5685 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 3155 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-23 13:35:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-07-23 13:35:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 639. [2022-07-23 13:35:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 616 states have (on average 1.2061688311688312) internal successors, (743), 620 states have internal predecessors, (743), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (14), 14 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-23 13:35:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 763 transitions. [2022-07-23 13:35:40,723 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 763 transitions. Word has length 163 [2022-07-23 13:35:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:35:40,724 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 763 transitions. [2022-07-23 13:35:40,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.538461538461538) internal successors, (177), 36 states have internal predecessors, (177), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-23 13:35:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 763 transitions. [2022-07-23 13:35:40,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-23 13:35:40,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:35:40,729 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:35:40,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-23 13:35:40,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:35:40,943 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-07-23 13:35:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:35:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1849473790, now seen corresponding path program 1 times [2022-07-23 13:35:40,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:35:40,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051188884] [2022-07-23 13:35:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:35:40,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:35:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 13:35:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 13:35:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:41,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-23 13:35:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-23 13:35:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 4 proven. 865 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:35:41,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:35:41,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051188884] [2022-07-23 13:35:41,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051188884] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:35:41,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276797075] [2022-07-23 13:35:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:35:41,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:35:41,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:35:41,365 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:35:41,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-23 13:35:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:35:41,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-23 13:35:41,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:35:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 26 proven. 855 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 13:35:42,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:35:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 4 proven. 865 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 13:35:43,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276797075] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:35:43,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:35:43,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 65 [2022-07-23 13:35:43,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122658354] [2022-07-23 13:35:43,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:35:43,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-23 13:35:43,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:35:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-23 13:35:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=873, Invalid=3287, Unknown=0, NotChecked=0, Total=4160 [2022-07-23 13:35:43,490 INFO L87 Difference]: Start difference. First operand 639 states and 763 transitions. Second operand has 65 states, 65 states have (on average 5.6461538461538465) internal successors, (367), 64 states have internal predecessors, (367), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-23 13:35:56,373 WARN L233 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 72 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 13:36:36,599 WARN L233 SmtUtils]: Spent 31.59s on a formula simplification. DAG size of input: 67 DAG size of output: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 13:36:38,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-23 13:37:03,513 WARN L233 SmtUtils]: Spent 15.45s on a formula simplification. DAG size of input: 62 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 13:37:31,086 WARN L233 SmtUtils]: Spent 18.54s on a formula simplification. DAG size of input: 57 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 13:37:39,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-23 13:37:42,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-23 13:37:44,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-23 13:37:45,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-23 13:38:38,291 WARN L233 SmtUtils]: Spent 38.00s on a formula simplification. DAG size of input: 77 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-23 13:38:41,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-23 13:38:43,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []