./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_2.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 31f10835cae624a55ab7ddafebce266aec4d698d20be3ba19631eaedd9136bff --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:05:14,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:05:14,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:05:14,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:05:14,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:05:14,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:05:14,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:05:14,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:05:14,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:05:14,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:05:14,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:05:14,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:05:14,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:05:14,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:05:14,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:05:14,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:05:14,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:05:14,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:05:14,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:05:14,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:05:14,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:05:14,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:05:14,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:05:14,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:05:14,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:05:14,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:05:14,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:05:14,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:05:14,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:05:14,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:05:14,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:05:14,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:05:14,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:05:14,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:05:14,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:05:14,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:05:14,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:05:14,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:05:14,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:05:14,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:05:14,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:05:14,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-16 09:05:14,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:05:14,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:05:14,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:05:14,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:05:14,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 09:05:14,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 09:05:14,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:05:14,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:05:14,719 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:05:14,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:05:14,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 09:05:14,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:05:14,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:05:14,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 09:05:14,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:05:14,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 09:05:14,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 09:05:14,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 09:05:14,722 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-16 09:05:14,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 09:05:14,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:05:14,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:05:14,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 09:05:14,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:05:14,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:05:14,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 09:05:14,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:05:14,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:05:14,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 09:05:14,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 09:05:14,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:05:14,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 09:05:14,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 09:05:14,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:05:14,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f10835cae624a55ab7ddafebce266aec4d698d20be3ba19631eaedd9136bff [2021-12-16 09:05:14,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:05:15,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:05:15,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:05:15,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:05:15,011 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:05:15,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2021-12-16 09:05:15,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3164a9ada/405d4c4b07cf4644945ca19c3b159e97/FLAGdd018257f [2021-12-16 09:05:15,514 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:05:15,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2021-12-16 09:05:15,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3164a9ada/405d4c4b07cf4644945ca19c3b159e97/FLAGdd018257f [2021-12-16 09:05:16,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3164a9ada/405d4c4b07cf4644945ca19c3b159e97 [2021-12-16 09:05:16,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:05:16,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:05:16,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:05:16,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:05:16,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:05:16,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64059525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16, skipping insertion in model container [2021-12-16 09:05:16,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:05:16,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:05:16,276 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_2.c.cil.c[727,740] [2021-12-16 09:05:16,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:05:16,348 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:05:16,364 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_2.c.cil.c[727,740] [2021-12-16 09:05:16,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:05:16,412 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:05:16,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16 WrapperNode [2021-12-16 09:05:16,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:05:16,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:05:16,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:05:16,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:05:16,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,463 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 126 [2021-12-16 09:05:16,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:05:16,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:05:16,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:05:16,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:05:16,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:05:16,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:05:16,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:05:16,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:05:16,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (1/1) ... [2021-12-16 09:05:16,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:05:16,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:16,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 09:05:16,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 09:05:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 09:05:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 09:05:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 09:05:16,565 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 09:05:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:05:16,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:05:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 09:05:16,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 09:05:16,652 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:05:16,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:05:16,962 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:05:16,967 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:05:16,971 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 09:05:16,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:16 BoogieIcfgContainer [2021-12-16 09:05:16,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:05:16,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 09:05:16,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 09:05:16,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 09:05:16,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:05:16" (1/3) ... [2021-12-16 09:05:16,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796a1f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:05:16, skipping insertion in model container [2021-12-16 09:05:16,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:16" (2/3) ... [2021-12-16 09:05:16,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796a1f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:05:16, skipping insertion in model container [2021-12-16 09:05:16,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:16" (3/3) ... [2021-12-16 09:05:16,981 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2.c.cil.c [2021-12-16 09:05:16,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 09:05:16,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-12-16 09:05:17,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 09:05:17,043 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 09:05:17,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-12-16 09:05:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 88 states have internal predecessors, (110), 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) [2021-12-16 09:05:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 09:05:17,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:17,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:17,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1894792754, now seen corresponding path program 1 times [2021-12-16 09:05:17,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751572701] [2021-12-16 09:05:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:17,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:17,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:17,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751572701] [2021-12-16 09:05:17,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751572701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:17,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:17,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:05:17,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062389676] [2021-12-16 09:05:17,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:17,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 09:05:17,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:17,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 09:05:17,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 09:05:17,243 INFO L87 Difference]: Start difference. First operand has 95 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 88 states have internal predecessors, (110), 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) [2021-12-16 09:05:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:17,276 INFO L93 Difference]: Finished difference Result 185 states and 241 transitions. [2021-12-16 09:05:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 09:05:17,279 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 09:05:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:17,285 INFO L225 Difference]: With dead ends: 185 [2021-12-16 09:05:17,285 INFO L226 Difference]: Without dead ends: 77 [2021-12-16 09:05:17,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 09:05:17,291 INFO L933 BasicCegarLoop]: 113 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, 113 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:17,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:17,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-16 09:05:17,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-16 09:05:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 71 states have internal predecessors, (81), 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) [2021-12-16 09:05:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-12-16 09:05:17,327 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 9 [2021-12-16 09:05:17,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:17,327 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-12-16 09:05:17,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:17,328 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-12-16 09:05:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 09:05:17,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:17,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:17,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 09:05:17,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:17,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1895734020, now seen corresponding path program 1 times [2021-12-16 09:05:17,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:17,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254575418] [2021-12-16 09:05:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:17,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:17,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:17,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254575418] [2021-12-16 09:05:17,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254575418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:17,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:17,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:05:17,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974452272] [2021-12-16 09:05:17,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:17,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:17,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:17,396 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:17,483 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2021-12-16 09:05:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:05:17,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 09:05:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:17,488 INFO L225 Difference]: With dead ends: 197 [2021-12-16 09:05:17,489 INFO L226 Difference]: Without dead ends: 123 [2021-12-16 09:05:17,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:17,495 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 62 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:17,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 225 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:17,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-16 09:05:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2021-12-16 09:05:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 104 states have internal predecessors, (129), 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) [2021-12-16 09:05:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2021-12-16 09:05:17,512 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 9 [2021-12-16 09:05:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:17,512 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2021-12-16 09:05:17,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2021-12-16 09:05:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 09:05:17,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:17,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:17,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 09:05:17,519 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:17,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash 456021693, now seen corresponding path program 1 times [2021-12-16 09:05:17,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:17,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647857210] [2021-12-16 09:05:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:17,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:17,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:17,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647857210] [2021-12-16 09:05:17,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647857210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:17,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:17,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:17,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354410126] [2021-12-16 09:05:17,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:17,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:17,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:17,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:17,581 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:17,620 INFO L93 Difference]: Finished difference Result 224 states and 276 transitions. [2021-12-16 09:05:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:05:17,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-16 09:05:17,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:17,621 INFO L225 Difference]: With dead ends: 224 [2021-12-16 09:05:17,622 INFO L226 Difference]: Without dead ends: 116 [2021-12-16 09:05:17,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:17,623 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 7 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:17,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 245 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:17,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-16 09:05:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-12-16 09:05:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 108 states have internal predecessors, (133), 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) [2021-12-16 09:05:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 141 transitions. [2021-12-16 09:05:17,635 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 141 transitions. Word has length 12 [2021-12-16 09:05:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:17,636 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 141 transitions. [2021-12-16 09:05:17,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 141 transitions. [2021-12-16 09:05:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 09:05:17,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:17,637 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:17,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 09:05:17,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:17,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:17,638 INFO L85 PathProgramCache]: Analyzing trace with hash -338403669, now seen corresponding path program 1 times [2021-12-16 09:05:17,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:17,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871437433] [2021-12-16 09:05:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:17,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:17,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:17,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871437433] [2021-12-16 09:05:17,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871437433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:17,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:17,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:17,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597323333] [2021-12-16 09:05:17,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:17,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:17,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:17,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:17,701 INFO L87 Difference]: Start difference. First operand 116 states and 141 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:05:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:17,739 INFO L93 Difference]: Finished difference Result 202 states and 235 transitions. [2021-12-16 09:05:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:05:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-16 09:05:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:17,741 INFO L225 Difference]: With dead ends: 202 [2021-12-16 09:05:17,741 INFO L226 Difference]: Without dead ends: 108 [2021-12-16 09:05:17,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:17,743 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 30 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:17,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 248 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-16 09:05:17,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2021-12-16 09:05:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 94 states have internal predecessors, (112), 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) [2021-12-16 09:05:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2021-12-16 09:05:17,751 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 19 [2021-12-16 09:05:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:17,752 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2021-12-16 09:05:17,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:05:17,752 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2021-12-16 09:05:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-16 09:05:17,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:17,752 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:17,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 09:05:17,753 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash -104572203, now seen corresponding path program 1 times [2021-12-16 09:05:17,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:17,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243994800] [2021-12-16 09:05:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:17,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:17,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243994800] [2021-12-16 09:05:17,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243994800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:17,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:17,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:17,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866473789] [2021-12-16 09:05:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:17,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:17,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:17,833 INFO L87 Difference]: Start difference. First operand 102 states and 120 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:05:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:17,895 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-12-16 09:05:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:17,895 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-16 09:05:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:17,897 INFO L225 Difference]: With dead ends: 111 [2021-12-16 09:05:17,897 INFO L226 Difference]: Without dead ends: 108 [2021-12-16 09:05:17,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:05:17,898 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 46 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:17,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 300 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-16 09:05:17,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2021-12-16 09:05:17,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 94 states have internal predecessors, (109), 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) [2021-12-16 09:05:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-12-16 09:05:17,923 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 20 [2021-12-16 09:05:17,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:17,924 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-12-16 09:05:17,924 INFO L471 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:05:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-12-16 09:05:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-16 09:05:17,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:17,925 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:17,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 09:05:17,925 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1053229104, now seen corresponding path program 1 times [2021-12-16 09:05:17,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:17,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296206149] [2021-12-16 09:05:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:17,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:17,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:17,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296206149] [2021-12-16 09:05:17,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296206149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:17,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:17,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:17,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849398384] [2021-12-16 09:05:18,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:18,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:18,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:18,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:18,009 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:05:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:18,100 INFO L93 Difference]: Finished difference Result 196 states and 224 transitions. [2021-12-16 09:05:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:18,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-16 09:05:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:18,104 INFO L225 Difference]: With dead ends: 196 [2021-12-16 09:05:18,104 INFO L226 Difference]: Without dead ends: 121 [2021-12-16 09:05:18,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:05:18,110 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 57 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:18,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 303 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-16 09:05:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2021-12-16 09:05:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.411764705882353) internal successors, (120), 104 states have internal predecessors, (120), 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) [2021-12-16 09:05:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2021-12-16 09:05:18,128 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 21 [2021-12-16 09:05:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:18,128 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2021-12-16 09:05:18,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:05:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2021-12-16 09:05:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-16 09:05:18,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:18,130 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:18,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 09:05:18,130 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:18,131 INFO L85 PathProgramCache]: Analyzing trace with hash -127840962, now seen corresponding path program 1 times [2021-12-16 09:05:18,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:18,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982841531] [2021-12-16 09:05:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:18,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 09:05:18,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:18,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982841531] [2021-12-16 09:05:18,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982841531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:18,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:18,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:05:18,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630459116] [2021-12-16 09:05:18,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:18,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:18,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:18,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:18,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:18,213 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:05:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:18,264 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2021-12-16 09:05:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:05:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-16 09:05:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:18,266 INFO L225 Difference]: With dead ends: 127 [2021-12-16 09:05:18,266 INFO L226 Difference]: Without dead ends: 124 [2021-12-16 09:05:18,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:18,269 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 13 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:18,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 161 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:18,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-16 09:05:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2021-12-16 09:05:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 101 states have internal predecessors, (116), 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) [2021-12-16 09:05:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2021-12-16 09:05:18,296 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 26 [2021-12-16 09:05:18,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:18,297 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2021-12-16 09:05:18,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:05:18,297 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2021-12-16 09:05:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 09:05:18,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:18,299 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 09:05:18,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 09:05:18,300 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1958605165, now seen corresponding path program 1 times [2021-12-16 09:05:18,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:18,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221969721] [2021-12-16 09:05:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:18,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 09:05:18,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:18,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221969721] [2021-12-16 09:05:18,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221969721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:18,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:18,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:18,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832843802] [2021-12-16 09:05:18,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:18,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:18,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:18,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:18,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:18,392 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:18,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:18,451 INFO L93 Difference]: Finished difference Result 156 states and 182 transitions. [2021-12-16 09:05:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:18,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 34 [2021-12-16 09:05:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:18,453 INFO L225 Difference]: With dead ends: 156 [2021-12-16 09:05:18,453 INFO L226 Difference]: Without dead ends: 153 [2021-12-16 09:05:18,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:18,457 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 114 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:18,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 233 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-16 09:05:18,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 138. [2021-12-16 09:05:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 129 states have internal predecessors, (157), 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) [2021-12-16 09:05:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 165 transitions. [2021-12-16 09:05:18,478 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 165 transitions. Word has length 34 [2021-12-16 09:05:18,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:18,478 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 165 transitions. [2021-12-16 09:05:18,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 165 transitions. [2021-12-16 09:05:18,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 09:05:18,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:18,480 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:18,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 09:05:18,480 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1911337813, now seen corresponding path program 1 times [2021-12-16 09:05:18,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:18,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096432141] [2021-12-16 09:05:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:18,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 09:05:18,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:18,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096432141] [2021-12-16 09:05:18,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096432141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:18,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:18,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:18,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222606964] [2021-12-16 09:05:18,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:18,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:18,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:18,579 INFO L87 Difference]: Start difference. First operand 138 states and 165 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:18,648 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2021-12-16 09:05:18,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:18,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 36 [2021-12-16 09:05:18,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:18,652 INFO L225 Difference]: With dead ends: 151 [2021-12-16 09:05:18,653 INFO L226 Difference]: Without dead ends: 148 [2021-12-16 09:05:18,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:18,655 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 95 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:18,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 247 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-16 09:05:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 133. [2021-12-16 09:05:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 107 states have (on average 1.3831775700934579) internal successors, (148), 124 states have internal predecessors, (148), 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) [2021-12-16 09:05:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2021-12-16 09:05:18,675 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 36 [2021-12-16 09:05:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:18,682 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2021-12-16 09:05:18,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2021-12-16 09:05:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-16 09:05:18,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:18,688 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 09:05:18,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 09:05:18,688 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash -875976532, now seen corresponding path program 1 times [2021-12-16 09:05:18,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:18,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497519993] [2021-12-16 09:05:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:18,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:18,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:18,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497519993] [2021-12-16 09:05:18,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497519993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:18,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:18,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 09:05:18,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215960258] [2021-12-16 09:05:18,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:18,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:18,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:18,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:18,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:18,781 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:18,833 INFO L93 Difference]: Finished difference Result 310 states and 363 transitions. [2021-12-16 09:05:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:18,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2021-12-16 09:05:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:18,835 INFO L225 Difference]: With dead ends: 310 [2021-12-16 09:05:18,835 INFO L226 Difference]: Without dead ends: 202 [2021-12-16 09:05:18,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:18,836 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 58 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:18,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 271 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-16 09:05:18,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 133. [2021-12-16 09:05:18,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 124 states have internal predecessors, (147), 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) [2021-12-16 09:05:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2021-12-16 09:05:18,843 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 37 [2021-12-16 09:05:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:18,844 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2021-12-16 09:05:18,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2021-12-16 09:05:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 09:05:18,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:18,845 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-16 09:05:18,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 09:05:18,845 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1872710945, now seen corresponding path program 1 times [2021-12-16 09:05:18,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:18,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491352835] [2021-12-16 09:05:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:18,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:18,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:18,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491352835] [2021-12-16 09:05:18,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491352835] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:18,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709641837] [2021-12-16 09:05:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:18,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:18,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:18,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:18,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 09:05:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:18,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:05:18,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:19,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:19,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709641837] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:19,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:19,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-12-16 09:05:19,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251649869] [2021-12-16 09:05:19,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:19,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 09:05:19,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 09:05:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:05:19,335 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:19,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:19,602 INFO L93 Difference]: Finished difference Result 514 states and 602 transitions. [2021-12-16 09:05:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 09:05:19,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2021-12-16 09:05:19,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:19,605 INFO L225 Difference]: With dead ends: 514 [2021-12-16 09:05:19,605 INFO L226 Difference]: Without dead ends: 408 [2021-12-16 09:05:19,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:05:19,606 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 325 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:19,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 246 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-16 09:05:19,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 153. [2021-12-16 09:05:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 127 states have (on average 1.3464566929133859) internal successors, (171), 144 states have internal predecessors, (171), 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) [2021-12-16 09:05:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 179 transitions. [2021-12-16 09:05:19,616 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 179 transitions. Word has length 39 [2021-12-16 09:05:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:19,617 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 179 transitions. [2021-12-16 09:05:19,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:19,617 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 179 transitions. [2021-12-16 09:05:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 09:05:19,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:19,618 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 09:05:19,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:19,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-16 09:05:19,844 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1837884998, now seen corresponding path program 1 times [2021-12-16 09:05:19,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:19,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349466008] [2021-12-16 09:05:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:19,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:19,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:19,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349466008] [2021-12-16 09:05:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349466008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:19,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326572991] [2021-12-16 09:05:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:19,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:19,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:19,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:19,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 09:05:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:19,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:05:19,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:20,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:20,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326572991] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:20,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:20,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-12-16 09:05:20,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958211531] [2021-12-16 09:05:20,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:20,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 09:05:20,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 09:05:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-12-16 09:05:20,250 INFO L87 Difference]: Start difference. First operand 153 states and 179 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 09:05:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:20,519 INFO L93 Difference]: Finished difference Result 418 states and 489 transitions. [2021-12-16 09:05:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 09:05:20,520 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2021-12-16 09:05:20,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:20,522 INFO L225 Difference]: With dead ends: 418 [2021-12-16 09:05:20,522 INFO L226 Difference]: Without dead ends: 302 [2021-12-16 09:05:20,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=186, Unknown=0, NotChecked=0, Total=306 [2021-12-16 09:05:20,523 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 194 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:20,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 436 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:05:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-12-16 09:05:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 153. [2021-12-16 09:05:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 127 states have (on average 1.31496062992126) internal successors, (167), 144 states have internal predecessors, (167), 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) [2021-12-16 09:05:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 175 transitions. [2021-12-16 09:05:20,534 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 175 transitions. Word has length 42 [2021-12-16 09:05:20,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:20,534 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 175 transitions. [2021-12-16 09:05:20,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 09:05:20,535 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 175 transitions. [2021-12-16 09:05:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-16 09:05:20,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:20,535 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:20,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:20,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-16 09:05:20,751 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash -826675551, now seen corresponding path program 2 times [2021-12-16 09:05:20,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:20,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295532080] [2021-12-16 09:05:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:20,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:20,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:20,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295532080] [2021-12-16 09:05:20,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295532080] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:20,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132881427] [2021-12-16 09:05:20,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:05:20,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:20,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:20,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:20,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 09:05:20,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:05:20,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:20,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:05:20,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:21,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:21,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132881427] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:21,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:21,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-12-16 09:05:21,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552739038] [2021-12-16 09:05:21,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:21,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 09:05:21,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 09:05:21,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=420, Unknown=0, NotChecked=0, Total=650 [2021-12-16 09:05:21,465 INFO L87 Difference]: Start difference. First operand 153 states and 175 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:22,007 INFO L93 Difference]: Finished difference Result 830 states and 978 transitions. [2021-12-16 09:05:22,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-16 09:05:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2021-12-16 09:05:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:22,011 INFO L225 Difference]: With dead ends: 830 [2021-12-16 09:05:22,011 INFO L226 Difference]: Without dead ends: 724 [2021-12-16 09:05:22,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=740, Invalid=1152, Unknown=0, NotChecked=0, Total=1892 [2021-12-16 09:05:22,013 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 742 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:22,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 421 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:05:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-16 09:05:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 193. [2021-12-16 09:05:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 167 states have (on average 1.2874251497005988) internal successors, (215), 184 states have internal predecessors, (215), 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) [2021-12-16 09:05:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 223 transitions. [2021-12-16 09:05:22,039 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 223 transitions. Word has length 59 [2021-12-16 09:05:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:22,039 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 223 transitions. [2021-12-16 09:05:22,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 223 transitions. [2021-12-16 09:05:22,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-16 09:05:22,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:22,041 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 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] [2021-12-16 09:05:22,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-16 09:05:22,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:22,255 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash -293337030, now seen corresponding path program 2 times [2021-12-16 09:05:22,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:22,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747903019] [2021-12-16 09:05:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:22,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:22,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:22,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:22,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747903019] [2021-12-16 09:05:22,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747903019] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:22,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985116566] [2021-12-16 09:05:22,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:05:22,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:22,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:22,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:22,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 09:05:22,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:05:22,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:22,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-16 09:05:22,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:22,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:22,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985116566] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:22,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:22,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-12-16 09:05:22,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537142540] [2021-12-16 09:05:22,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:22,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-16 09:05:22,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-16 09:05:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-12-16 09:05:22,984 INFO L87 Difference]: Start difference. First operand 193 states and 223 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 09:05:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:38,676 INFO L93 Difference]: Finished difference Result 602 states and 709 transitions. [2021-12-16 09:05:38,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 09:05:38,677 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 62 [2021-12-16 09:05:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:38,679 INFO L225 Difference]: With dead ends: 602 [2021-12-16 09:05:38,679 INFO L226 Difference]: Without dead ends: 486 [2021-12-16 09:05:38,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=502, Invalid=902, Unknown=2, NotChecked=0, Total=1406 [2021-12-16 09:05:38,681 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 521 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:38,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 1176 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 09:05:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-12-16 09:05:38,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 193. [2021-12-16 09:05:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 167 states have (on average 1.2395209580838322) internal successors, (207), 184 states have internal predecessors, (207), 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) [2021-12-16 09:05:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 215 transitions. [2021-12-16 09:05:38,695 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 215 transitions. Word has length 62 [2021-12-16 09:05:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:38,695 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 215 transitions. [2021-12-16 09:05:38,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 09:05:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 215 transitions. [2021-12-16 09:05:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-16 09:05:38,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:38,696 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:38,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:38,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:38,907 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:38,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash -470814303, now seen corresponding path program 3 times [2021-12-16 09:05:38,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:38,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061763017] [2021-12-16 09:05:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:38,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:38,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:39,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:39,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061763017] [2021-12-16 09:05:39,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061763017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:39,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246676394] [2021-12-16 09:05:39,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:05:39,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:39,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:39,196 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) [2021-12-16 09:05:39,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 09:05:39,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-12-16 09:05:39,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:39,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-16 09:05:39,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:39,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:40,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246676394] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:40,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:40,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 50 [2021-12-16 09:05:40,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648387560] [2021-12-16 09:05:40,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:40,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-16 09:05:40,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-16 09:05:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=1604, Unknown=0, NotChecked=0, Total=2450 [2021-12-16 09:05:40,567 INFO L87 Difference]: Start difference. First operand 193 states and 215 transitions. Second operand has 50 states, 50 states have (on average 4.96) internal successors, (248), 50 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:42,013 INFO L93 Difference]: Finished difference Result 1462 states and 1730 transitions. [2021-12-16 09:05:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-12-16 09:05:42,013 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.96) internal successors, (248), 50 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 99 [2021-12-16 09:05:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:42,019 INFO L225 Difference]: With dead ends: 1462 [2021-12-16 09:05:42,019 INFO L226 Difference]: Without dead ends: 1356 [2021-12-16 09:05:42,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2696, Invalid=4276, Unknown=0, NotChecked=0, Total=6972 [2021-12-16 09:05:42,024 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 1385 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:42,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1385 Valid, 775 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 09:05:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-12-16 09:05:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 273. [2021-12-16 09:05:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 247 states have (on average 1.2267206477732793) internal successors, (303), 264 states have internal predecessors, (303), 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) [2021-12-16 09:05:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 311 transitions. [2021-12-16 09:05:42,057 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 311 transitions. Word has length 99 [2021-12-16 09:05:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:42,057 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 311 transitions. [2021-12-16 09:05:42,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.96) internal successors, (248), 50 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 311 transitions. [2021-12-16 09:05:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-16 09:05:42,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:42,059 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 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] [2021-12-16 09:05:42,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:42,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-16 09:05:42,264 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-12-16 09:05:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:42,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1189815610, now seen corresponding path program 3 times [2021-12-16 09:05:42,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:42,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222930548] [2021-12-16 09:05:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:42,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:42,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:42,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 13 proven. 455 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 09:05:42,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:42,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222930548] [2021-12-16 09:05:42,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222930548] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:42,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638592808] [2021-12-16 09:05:42,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:05:42,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:42,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:42,605 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) [2021-12-16 09:05:42,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process