/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 15:49:02,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 15:49:02,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 15:49:02,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 15:49:02,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 15:49:02,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 15:49:02,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 15:49:02,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 15:49:02,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 15:49:02,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 15:49:02,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 15:49:02,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 15:49:02,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 15:49:02,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 15:49:02,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 15:49:02,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 15:49:02,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 15:49:02,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 15:49:02,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 15:49:02,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 15:49:02,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 15:49:02,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 15:49:02,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 15:49:02,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 15:49:02,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 15:49:02,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 15:49:02,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 15:49:02,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 15:49:02,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 15:49:02,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 15:49:02,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 15:49:02,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 15:49:02,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 15:49:02,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 15:49:02,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 15:49:02,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 15:49:02,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 15:49:02,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 15:49:02,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 15:49:02,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 15:49:02,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 15:49:02,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 15:49:02,650 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 15:49:02,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 15:49:02,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 15:49:02,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 15:49:02,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 15:49:02,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 15:49:02,651 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 15:49:02,652 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 15:49:02,652 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 15:49:02,652 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 15:49:02,652 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 15:49:02,653 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 15:49:02,653 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 15:49:02,653 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 15:49:02,653 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 15:49:02,653 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 15:49:02,653 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 15:49:02,653 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 15:49:02,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 15:49:02,654 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 15:49:02,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 15:49:02,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 15:49:02,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 15:49:02,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 15:49:02,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 15:49:02,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 15:49:02,655 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 15:49:02,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 15:49:02,655 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 15:49:02,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 15:49:02,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 15:49:02,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 15:49:02,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:49:02,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 15:49:02,656 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 15:49:02,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 15:49:02,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 15:49:02,656 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 15:49:02,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 15:49:02,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 15:49:02,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 15:49:02,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 15:49:02,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 15:49:02,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 15:49:02,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 15:49:02,909 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 15:49:02,910 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 15:49:02,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2023-04-02 15:49:03,950 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 15:49:04,131 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 15:49:04,131 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2023-04-02 15:49:04,138 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891279edd/8a5fc863744446eea35473a44444b9f5/FLAG8fc3dda29 [2023-04-02 15:49:04,150 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891279edd/8a5fc863744446eea35473a44444b9f5 [2023-04-02 15:49:04,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 15:49:04,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 15:49:04,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 15:49:04,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 15:49:04,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 15:49:04,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289f5524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04, skipping insertion in model container [2023-04-02 15:49:04,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 15:49:04,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 15:49:04,289 WARN L247 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_5a.c.cil.c[728,741] [2023-04-02 15:49:04,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:49:04,333 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 15:49:04,343 WARN L247 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_5a.c.cil.c[728,741] [2023-04-02 15:49:04,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 15:49:04,376 INFO L208 MainTranslator]: Completed translation [2023-04-02 15:49:04,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04 WrapperNode [2023-04-02 15:49:04,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 15:49:04,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 15:49:04,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 15:49:04,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 15:49:04,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,407 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 15:49:04,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 15:49:04,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 15:49:04,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 15:49:04,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (1/1) ... [2023-04-02 15:49:04,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 15:49:04,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:04,441 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) [2023-04-02 15:49:04,443 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 [2023-04-02 15:49:04,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 15:49:04,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 15:49:04,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 15:49:04,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 15:49:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-04-02 15:49:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2023-04-02 15:49:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2023-04-02 15:49:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 15:49:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 15:49:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 15:49:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 15:49:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 15:49:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 15:49:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 15:49:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 15:49:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 15:49:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 15:49:04,545 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 15:49:04,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 15:49:05,054 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 15:49:05,290 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 15:49:05,290 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 15:49:05,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:49:05 BoogieIcfgContainer [2023-04-02 15:49:05,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 15:49:05,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 15:49:05,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 15:49:05,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 15:49:05,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 03:49:04" (1/3) ... [2023-04-02 15:49:05,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b46ada0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:49:05, skipping insertion in model container [2023-04-02 15:49:05,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 03:49:04" (2/3) ... [2023-04-02 15:49:05,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b46ada0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 03:49:05, skipping insertion in model container [2023-04-02 15:49:05,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 03:49:05" (3/3) ... [2023-04-02 15:49:05,301 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2023-04-02 15:49:05,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 15:49:05,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 15:49:05,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 15:49:05,365 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29a29c64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 15:49:05,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 15:49:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 40 states have (on average 1.5) internal successors, (60), 42 states have internal predecessors, (60), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 15:49:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-02 15:49:05,374 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:49:05,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:49:05,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:49:05,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:49:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1292311374, now seen corresponding path program 1 times [2023-04-02 15:49:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:49:05,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898639404] [2023-04-02 15:49:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:05,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:49:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:05,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:49:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898639404] [2023-04-02 15:49:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898639404] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015376471] [2023-04-02 15:49:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:05,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:05,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:05,767 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) [2023-04-02 15:49:05,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 15:49:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:05,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-02 15:49:05,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:49:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:06,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:49:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 15:49:06,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015376471] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:49:06,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440151946] [2023-04-02 15:49:06,605 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-04-02 15:49:06,605 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:49:06,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:49:06,612 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:49:06,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:49:06,669 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 15:49:06,760 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 16 for LOIs [2023-04-02 15:49:06,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 15:49:06,790 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:49:07,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1440151946] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:49:07,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-02 15:49:07,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 14, 13] total 36 [2023-04-02 15:49:07,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926415375] [2023-04-02 15:49:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:49:07,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 15:49:07,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:49:07,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 15:49:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 15:49:07,291 INFO L87 Difference]: Start difference. First operand has 57 states, 40 states have (on average 1.5) internal successors, (60), 42 states have internal predecessors, (60), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 12 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 15:49:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:49:08,430 INFO L93 Difference]: Finished difference Result 118 states and 176 transitions. [2023-04-02 15:49:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 15:49:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2023-04-02 15:49:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:49:08,440 INFO L225 Difference]: With dead ends: 118 [2023-04-02 15:49:08,440 INFO L226 Difference]: Without dead ends: 67 [2023-04-02 15:49:08,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=208, Invalid=1684, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 15:49:08,446 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 160 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 15:49:08,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 14 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 15:49:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-04-02 15:49:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2023-04-02 15:49:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 43 states have internal predecessors, (57), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-04-02 15:49:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2023-04-02 15:49:08,503 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 40 [2023-04-02 15:49:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:49:08,503 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2023-04-02 15:49:08,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 15:49:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2023-04-02 15:49:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-02 15:49:08,507 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:49:08,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:49:08,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 15:49:08,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 15:49:08,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:49:08,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:49:08,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1359893824, now seen corresponding path program 1 times [2023-04-02 15:49:08,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:49:08,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279356988] [2023-04-02 15:49:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:08,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:49:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:08,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:49:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279356988] [2023-04-02 15:49:08,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279356988] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531104223] [2023-04-02 15:49:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:08,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:08,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:08,922 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) [2023-04-02 15:49:08,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 15:49:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:09,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-02 15:49:09,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:49:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:09,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:49:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 15:49:09,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531104223] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:49:09,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [435680897] [2023-04-02 15:49:09,457 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-04-02 15:49:09,457 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:49:09,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:49:09,458 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:49:09,458 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:49:09,479 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 15:49:09,851 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-04-02 15:49:09,866 INFO L197 IcfgInterpreter]: Interpreting procedure mulflt with input of size 28 for LOIs [2023-04-02 15:49:09,911 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 20 for LOIs [2023-04-02 15:49:09,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 15:49:09,988 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:49:11,740 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '883#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 15:49:11,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:49:11,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 15:49:11,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 13] total 27 [2023-04-02 15:49:11,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962677706] [2023-04-02 15:49:11,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 15:49:11,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 15:49:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:49:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 15:49:11,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2161, Unknown=0, NotChecked=0, Total=2352 [2023-04-02 15:49:11,744 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 27 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 21 states have internal predecessors, (56), 5 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 8 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-02 15:49:12,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:49:12,540 INFO L93 Difference]: Finished difference Result 166 states and 250 transitions. [2023-04-02 15:49:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-02 15:49:12,541 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 21 states have internal predecessors, (56), 5 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 8 states have call predecessors, (16), 4 states have call successors, (16) Word has length 45 [2023-04-02 15:49:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:49:12,545 INFO L225 Difference]: With dead ends: 166 [2023-04-02 15:49:12,545 INFO L226 Difference]: Without dead ends: 122 [2023-04-02 15:49:12,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=365, Invalid=4057, Unknown=0, NotChecked=0, Total=4422 [2023-04-02 15:49:12,548 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 148 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 15:49:12,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 518 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 15:49:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-04-02 15:49:12,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 78. [2023-04-02 15:49:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 60 states have internal predecessors, (76), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-02 15:49:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2023-04-02 15:49:12,578 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 45 [2023-04-02 15:49:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:49:12,578 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2023-04-02 15:49:12,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 21 states have internal predecessors, (56), 5 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 8 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-02 15:49:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2023-04-02 15:49:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-02 15:49:12,580 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:49:12,581 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:49:12,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 15:49:12,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 15:49:12,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:49:12,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:49:12,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1648552138, now seen corresponding path program 1 times [2023-04-02 15:49:12,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:49:12,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871139048] [2023-04-02 15:49:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:12,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:49:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:12,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:49:12,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871139048] [2023-04-02 15:49:12,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871139048] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:12,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769158043] [2023-04-02 15:49:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:12,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:12,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:12,866 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) [2023-04-02 15:49:12,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 15:49:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:12,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 15:49:12,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:49:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 15:49:12,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:49:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769158043] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:49:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499074670] [2023-04-02 15:49:13,049 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-04-02 15:49:13,049 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:49:13,049 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:49:13,049 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:49:13,049 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:49:13,064 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 15:49:13,316 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 15:49:13,332 INFO L197 IcfgInterpreter]: Interpreting procedure mulflt with input of size 13 for LOIs [2023-04-02 15:49:13,338 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 20 for LOIs [2023-04-02 15:49:13,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 15:49:13,402 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:49:14,319 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1586#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 15:49:14,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:49:14,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 15:49:14,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-04-02 15:49:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956169876] [2023-04-02 15:49:14,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 15:49:14,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 15:49:14,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:49:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 15:49:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 15:49:14,322 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 15:49:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:49:14,551 INFO L93 Difference]: Finished difference Result 217 states and 307 transitions. [2023-04-02 15:49:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 15:49:14,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 47 [2023-04-02 15:49:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:49:14,553 INFO L225 Difference]: With dead ends: 217 [2023-04-02 15:49:14,553 INFO L226 Difference]: Without dead ends: 149 [2023-04-02 15:49:14,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 15:49:14,563 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 33 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:49:14,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 242 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:49:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-04-02 15:49:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 95. [2023-04-02 15:49:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 77 states have internal predecessors, (98), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-02 15:49:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 122 transitions. [2023-04-02 15:49:14,602 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 122 transitions. Word has length 47 [2023-04-02 15:49:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:49:14,603 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 122 transitions. [2023-04-02 15:49:14,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 15:49:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 122 transitions. [2023-04-02 15:49:14,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-02 15:49:14,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:49:14,610 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:49:14,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 15:49:14,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:14,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:49:14,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:49:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1577993370, now seen corresponding path program 1 times [2023-04-02 15:49:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:49:14,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894190202] [2023-04-02 15:49:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:49:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:14,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:49:14,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894190202] [2023-04-02 15:49:14,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894190202] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:14,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579847950] [2023-04-02 15:49:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:14,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:14,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:14,948 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) [2023-04-02 15:49:14,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 15:49:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:15,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 15:49:15,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:49:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 15:49:15,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:49:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 15:49:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579847950] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:15,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 15:49:15,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 12] total 21 [2023-04-02 15:49:15,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319509633] [2023-04-02 15:49:15,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:49:15,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 15:49:15,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:49:15,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 15:49:15,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-04-02 15:49:15,723 INFO L87 Difference]: Start difference. First operand 95 states and 122 transitions. Second operand has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 15:49:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:49:15,861 INFO L93 Difference]: Finished difference Result 115 states and 149 transitions. [2023-04-02 15:49:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 15:49:15,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-04-02 15:49:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:49:15,863 INFO L225 Difference]: With dead ends: 115 [2023-04-02 15:49:15,863 INFO L226 Difference]: Without dead ends: 106 [2023-04-02 15:49:15,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-04-02 15:49:15,865 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 25 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:49:15,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 266 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:49:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-02 15:49:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2023-04-02 15:49:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 78 states have (on average 1.294871794871795) internal successors, (101), 82 states have internal predecessors, (101), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-04-02 15:49:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2023-04-02 15:49:15,892 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 49 [2023-04-02 15:49:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:49:15,892 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2023-04-02 15:49:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 15:49:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2023-04-02 15:49:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 15:49:15,893 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:49:15,894 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:49:15,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 15:49:16,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:16,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:49:16,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:49:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2090623940, now seen corresponding path program 1 times [2023-04-02 15:49:16,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:49:16,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465128291] [2023-04-02 15:49:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:16,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:49:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 15:49:16,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:49:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465128291] [2023-04-02 15:49:16,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465128291] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595937350] [2023-04-02 15:49:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:16,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:16,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:16,244 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) [2023-04-02 15:49:16,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 15:49:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:16,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 15:49:16,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:49:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:16,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 15:49:16,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595937350] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:49:16,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 15:49:16,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-04-02 15:49:16,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341915055] [2023-04-02 15:49:16,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:49:16,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 15:49:16,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:49:16,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 15:49:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-04-02 15:49:16,332 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 15:49:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:49:16,434 INFO L93 Difference]: Finished difference Result 181 states and 229 transitions. [2023-04-02 15:49:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 15:49:16,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2023-04-02 15:49:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:49:16,435 INFO L225 Difference]: With dead ends: 181 [2023-04-02 15:49:16,435 INFO L226 Difference]: Without dead ends: 81 [2023-04-02 15:49:16,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-02 15:49:16,436 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:49:16,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 91 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:49:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-04-02 15:49:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2023-04-02 15:49:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 55 states have internal predecessors, (68), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-04-02 15:49:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2023-04-02 15:49:16,454 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 53 [2023-04-02 15:49:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:49:16,454 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2023-04-02 15:49:16,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 15:49:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2023-04-02 15:49:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 15:49:16,455 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:49:16,455 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:49:16,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 15:49:16,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:16,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:49:16,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:49:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1013457835, now seen corresponding path program 1 times [2023-04-02 15:49:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:49:16,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556091801] [2023-04-02 15:49:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:49:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 15:49:16,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:49:16,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556091801] [2023-04-02 15:49:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556091801] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:16,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752405314] [2023-04-02 15:49:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:16,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:16,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:16,803 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) [2023-04-02 15:49:16,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 15:49:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:16,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 15:49:16,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:49:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 15:49:17,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:49:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-02 15:49:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752405314] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:49:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1677254318] [2023-04-02 15:49:17,558 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-04-02 15:49:17,558 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:49:17,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:49:17,559 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:49:17,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:49:17,572 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 15:49:17,842 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-04-02 15:49:17,853 INFO L197 IcfgInterpreter]: Interpreting procedure mulflt with input of size 28 for LOIs [2023-04-02 15:49:17,885 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-02 15:49:17,985 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 20 for LOIs [2023-04-02 15:49:18,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 15:49:18,093 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:49:19,675 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3555#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 15:49:19,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:49:19,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 15:49:19,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 10] total 25 [2023-04-02 15:49:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804142701] [2023-04-02 15:49:19,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 15:49:19,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-02 15:49:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:49:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-02 15:49:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2156, Unknown=0, NotChecked=0, Total=2352 [2023-04-02 15:49:19,678 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 25 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 21 states have internal predecessors, (60), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-02 15:49:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:49:20,303 INFO L93 Difference]: Finished difference Result 144 states and 184 transitions. [2023-04-02 15:49:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 15:49:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 21 states have internal predecessors, (60), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 53 [2023-04-02 15:49:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:49:20,305 INFO L225 Difference]: With dead ends: 144 [2023-04-02 15:49:20,305 INFO L226 Difference]: Without dead ends: 88 [2023-04-02 15:49:20,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 115 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=353, Invalid=3807, Unknown=0, NotChecked=0, Total=4160 [2023-04-02 15:49:20,309 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 80 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 15:49:20,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 472 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 15:49:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-04-02 15:49:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2023-04-02 15:49:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 15:49:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2023-04-02 15:49:20,333 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 53 [2023-04-02 15:49:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:49:20,334 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2023-04-02 15:49:20,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 21 states have internal predecessors, (60), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-02 15:49:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2023-04-02 15:49:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 15:49:20,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:49:20,335 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:49:20,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 15:49:20,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:20,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:49:20,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:49:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash -867803752, now seen corresponding path program 2 times [2023-04-02 15:49:20,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:49:20,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071601569] [2023-04-02 15:49:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:20,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:49:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 15:49:20,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:49:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071601569] [2023-04-02 15:49:20,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071601569] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497315824] [2023-04-02 15:49:20,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 15:49:20,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:20,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:20,695 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 15:49:20,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 15:49:20,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-04-02 15:49:20,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 15:49:20,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 15:49:20,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:49:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 15:49:20,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 15:49:20,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497315824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 15:49:20,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 15:49:20,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2023-04-02 15:49:20,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520825338] [2023-04-02 15:49:20,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 15:49:20,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 15:49:20,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:49:20,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 15:49:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-04-02 15:49:20,924 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 13 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 15:49:21,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:49:21,067 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2023-04-02 15:49:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 15:49:21,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2023-04-02 15:49:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:49:21,069 INFO L225 Difference]: With dead ends: 83 [2023-04-02 15:49:21,069 INFO L226 Difference]: Without dead ends: 76 [2023-04-02 15:49:21,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-04-02 15:49:21,070 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 15:49:21,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 498 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 15:49:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-04-02 15:49:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2023-04-02 15:49:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 58 states have internal predecessors, (67), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-04-02 15:49:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2023-04-02 15:49:21,086 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 60 [2023-04-02 15:49:21,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:49:21,086 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2023-04-02 15:49:21,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 15:49:21,086 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2023-04-02 15:49:21,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 15:49:21,087 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 15:49:21,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 15:49:21,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 15:49:21,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:21,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 15:49:21,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 15:49:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash -373557179, now seen corresponding path program 1 times [2023-04-02 15:49:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 15:49:21,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271713722] [2023-04-02 15:49:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:21,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 15:49:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 15:49:21,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 15:49:21,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271713722] [2023-04-02 15:49:21,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271713722] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 15:49:21,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892562132] [2023-04-02 15:49:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 15:49:21,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 15:49:21,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 15:49:21,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 15:49:21,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 15:49:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 15:49:21,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-02 15:49:21,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 15:49:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-02 15:49:21,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 15:49:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 15:49:22,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892562132] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 15:49:22,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [294998135] [2023-04-02 15:49:22,242 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-04-02 15:49:22,242 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 15:49:22,242 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 15:49:22,243 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 15:49:22,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 15:49:22,256 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 15:49:22,502 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-04-02 15:49:22,510 INFO L197 IcfgInterpreter]: Interpreting procedure mulflt with input of size 28 for LOIs [2023-04-02 15:49:22,538 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-02 15:49:22,603 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 20 for LOIs [2023-04-02 15:49:22,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 15:49:22,676 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 15:49:24,056 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4718#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 15:49:24,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 15:49:24,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 15:49:24,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 24 [2023-04-02 15:49:24,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863954282] [2023-04-02 15:49:24,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 15:49:24,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 15:49:24,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 15:49:24,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 15:49:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2023-04-02 15:49:24,059 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand has 24 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 6 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 9 states have call predecessors, (16), 6 states have call successors, (16) [2023-04-02 15:49:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 15:49:24,591 INFO L93 Difference]: Finished difference Result 134 states and 165 transitions. [2023-04-02 15:49:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 15:49:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 6 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 9 states have call predecessors, (16), 6 states have call successors, (16) Word has length 60 [2023-04-02 15:49:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 15:49:24,591 INFO L225 Difference]: With dead ends: 134 [2023-04-02 15:49:24,591 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 15:49:24,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=391, Invalid=3641, Unknown=0, NotChecked=0, Total=4032 [2023-04-02 15:49:24,593 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 131 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 15:49:24,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 257 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 15:49:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 15:49:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 15:49:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 15:49:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 15:49:24,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2023-04-02 15:49:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 15:49:24,594 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 15:49:24,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 6 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 9 states have call predecessors, (16), 6 states have call successors, (16) [2023-04-02 15:49:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 15:49:24,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 15:49:24,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 15:49:24,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 15:49:24,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-02 15:49:24,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 15:49:40,471 WARN L223 SmtUtils]: Spent 11.69s on a formula simplification. DAG size of input: 136 DAG size of output: 244 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 15:49:59,250 WARN L223 SmtUtils]: Spent 18.70s on a formula simplification. DAG size of input: 143 DAG size of output: 254 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 15:50:15,698 WARN L223 SmtUtils]: Spent 16.45s on a formula simplification. DAG size of input: 142 DAG size of output: 246 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 15:50:24,702 WARN L223 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 128 DAG size of output: 185 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 15:50:30,983 WARN L223 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 127 DAG size of output: 147 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 15:50:46,332 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2023-04-02 15:50:46,332 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 11) no Hoare annotation was computed. [2023-04-02 15:50:46,332 INFO L899 garLoopResultBuilder]: For program point mulfltEXIT(lines 147 219) no Hoare annotation was computed. [2023-04-02 15:50:46,332 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2023-04-02 15:50:46,332 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2023-04-02 15:50:46,332 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2023-04-02 15:50:46,333 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2023-04-02 15:50:46,333 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 147 219) the Hoare annotation is: true [2023-04-02 15:50:46,333 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2023-04-02 15:50:46,333 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2023-04-02 15:50:46,333 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (let ((.cse3 (mod |mulflt_#in~b| 4294967296)) (.cse2 (mod |mulflt_#in~a| 4294967296))) (let ((.cse4 (<= .cse3 .cse2)) (.cse1 (< .cse2 .cse3))) (and (or (and .cse1 (not (= .cse2 0))) (and (not (= .cse3 0)) .cse4)) (or (and (= mulflt_~b |mulflt_#in~b|) .cse4) (and .cse1 (= mulflt_~b |mulflt_#in~a|)))))) (= 0 mulflt_~__retres10~1) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,333 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2023-04-02 15:50:46,333 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2023-04-02 15:50:46,333 INFO L899 garLoopResultBuilder]: For program point L256-1(lines 256 272) no Hoare annotation was computed. [2023-04-02 15:50:46,333 INFO L899 garLoopResultBuilder]: For program point L254(line 254) no Hoare annotation was computed. [2023-04-02 15:50:46,333 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 220 276) no Hoare annotation was computed. [2023-04-02 15:50:46,334 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (and (<= main_~eb~2 127) (= main_~zero~0 0) (<= 0 (+ 128 main_~ea~2)) (<= main_~ea~2 127) (<= 0 (+ 128 main_~eb~2))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,334 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2023-04-02 15:50:46,334 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= main_~eb~2 127) (<= 0 (+ 128 main_~ea~2)) (<= main_~ea~2 127) (<= 0 (+ 128 main_~eb~2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,334 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2023-04-02 15:50:46,334 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 276) the Hoare annotation is: true [2023-04-02 15:50:46,334 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse14 (mod main_~zero~0 4294967296)) (.cse2 (= (select |#length| 3) 12)) (.cse3 (<= main_~eb~2 127)) (.cse4 (= 22 (select |#length| 2))) (.cse5 (<= 0 (+ 128 main_~ea~2))) (.cse6 (<= main_~ea~2 127)) (.cse7 (<= 0 (+ 128 main_~eb~2))) (.cse8 (= 2 (select |#length| 1))) (.cse9 (= (select |#valid| 3) 1)) (.cse10 (= main_~tmp___1~0 0)) (.cse11 (= (select |#valid| 1) 1)) (.cse12 (= (select |#valid| 0) 0)) (.cse13 (= (select |#valid| 2) 1)) (.cse1 (= |#NULL.offset| 0)) (.cse0 (= (select .cse18 0) 48)) (.cse15 (= (select .cse18 1) 0)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (not .cse0) (not .cse1) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse1 .cse0 (<= (mod main_~r_mul~0 4294967296) .cse14) .cse15 (<= .cse14 0) .cse16 .cse17) (not .cse8) (not .cse9) (not .cse2) (not .cse12) (not .cse15) (not .cse4) (not .cse11) (not .cse17) (not .cse13) (and (or (and (<= 4294967295 .cse14) (= main_~sb~0 0)) (and (< .cse14 4294967295) (= main_~sb~0 1))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~r_mul~0 4294967295) .cse9 .cse10 .cse11 .cse12 .cse13 .cse1 .cse0 .cse15 .cse16 .cse17) (<= |#StackHeapBarrier| 0)))) [2023-04-02 15:50:46,334 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse1 (<= main_~eb~2 127)) (.cse2 (<= 0 (+ 128 main_~ea~2))) (.cse3 (<= main_~ea~2 127)) (.cse4 (<= 0 (+ 128 main_~eb~2)))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (and (= main_~a~0 0) .cse1 .cse2 .cse3 .cse4 (<= (mod main_~zero~0 4294967296) 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (and .cse1 (= main_~zero~0 0) .cse2 .cse3 .cse4) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,334 INFO L895 garLoopResultBuilder]: At program point L243-2(lines 243 252) the Hoare annotation is: (let ((.cse4 (select |#memory_int| 1)) (.cse0 (<= main_~eb~2 127)) (.cse1 (<= 0 (+ 128 main_~ea~2))) (.cse2 (<= main_~ea~2 127)) (.cse3 (<= 0 (+ 128 main_~eb~2)))) (or (and .cse0 (= main_~zero~0 0) .cse1 .cse2 .cse3 (= main_~sb~0 1)) (not (= (select .cse4 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse4 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (let ((.cse6 (mod main_~a~0 4294967296)) (.cse5 (mod main_~b~0 4294967296))) (and .cse0 .cse1 .cse2 .cse3 (<= (mod main_~zero~0 4294967296) 0) (or (<= .cse5 .cse6) (< main_~a~0 (+ (* (div main_~a~0 4294967296) 4294967296) 1))) (or (< .cse6 .cse5) (< main_~b~0 (+ (* (div main_~b~0 4294967296) 4294967296) 1))))) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,335 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2023-04-02 15:50:46,335 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (and (<= main_~eb~2 127) (= main_~zero~0 0) (<= 0 (+ 128 main_~ea~2)) (<= main_~ea~2 127) (<= 0 (+ 128 main_~eb~2))) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,335 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2023-04-02 15:50:46,335 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 15:50:46,335 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 15:50:46,335 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (not (= (mod |base2flt_#in~m| 4294967296) 0)) (<= |base2flt_#in~e| base2flt_~e) (not (= |base2flt_#in~m| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,335 INFO L895 garLoopResultBuilder]: At program point $Ultimate##27(line 76) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= (mod |base2flt_#in~m| 4294967296) 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,335 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2023-04-02 15:50:46,336 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2023-04-02 15:50:46,336 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse12 (select |#memory_int| 1))) (let ((.cse0 (not (= (select .cse12 0) 48))) (.cse1 (not (= |#NULL.offset| 0))) (.cse2 (not (= 2 (select |#length| 1)))) (.cse3 (not (= (select |#valid| 3) 1))) (.cse4 (not (= (select |#length| 3) 12))) (.cse5 (not (= (select |#valid| 0) 0))) (.cse6 (not (= (select .cse12 1) 0))) (.cse7 (not (= 22 (select |#length| 2)))) (.cse8 (not (= (select |#valid| 1) 1))) (.cse9 (not (= |#NULL.base| 0))) (.cse10 (not (= (select |#valid| 2) 1))) (.cse11 (<= |#StackHeapBarrier| 0))) (and (or .cse0 .cse1 (not (= (mod |base2flt_#in~m| 4294967296) 0)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (and (= base2flt_~m |base2flt_#in~m|) (= base2flt_~__retres4~0 0)) .cse10 .cse11) (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (not (= |base2flt_#in~m| 0)) (<= (mod |base2flt_#res| 4294967296) 0) (= base2flt_~e 0) .cse10 (not (= |base2flt_#in~e| 0)) .cse11)))) [2023-04-02 15:50:46,336 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 82) the Hoare annotation is: true [2023-04-02 15:50:46,336 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2023-04-02 15:50:46,336 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2023-04-02 15:50:46,336 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2023-04-02 15:50:46,336 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2023-04-02 15:50:46,336 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= (mod |base2flt_#in~m| 4294967296) 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= 22 (select |#length| 2))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 15:50:46,336 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2023-04-02 15:50:46,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 20) the Hoare annotation is: true [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 131) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 123) no Hoare annotation was computed. [2023-04-02 15:50:46,337 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2023-04-02 15:50:46,338 INFO L899 garLoopResultBuilder]: For program point L114-1(line 114) no Hoare annotation was computed. [2023-04-02 15:50:46,338 INFO L899 garLoopResultBuilder]: For program point L143(lines 93 145) no Hoare annotation was computed. [2023-04-02 15:50:46,338 INFO L899 garLoopResultBuilder]: For program point L94-2(lines 93 145) no Hoare annotation was computed. [2023-04-02 15:50:46,338 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 83 146) no Hoare annotation was computed. [2023-04-02 15:50:46,338 INFO L899 garLoopResultBuilder]: For program point addfltEXIT(lines 83 146) no Hoare annotation was computed. [2023-04-02 15:50:46,338 INFO L899 garLoopResultBuilder]: For program point L125-4(lines 125 136) no Hoare annotation was computed. [2023-04-02 15:50:46,338 INFO L899 garLoopResultBuilder]: For program point L125-6(lines 125 136) no Hoare annotation was computed. [2023-04-02 15:50:46,338 INFO L899 garLoopResultBuilder]: For program point L138(line 138) no Hoare annotation was computed. [2023-04-02 15:50:46,340 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-04-02 15:50:46,342 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 15:50:46,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 03:50:46 BoogieIcfgContainer [2023-04-02 15:50:46,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 15:50:46,359 INFO L158 Benchmark]: Toolchain (without parser) took 102205.58ms. Allocated memory was 247.5MB in the beginning and 647.0MB in the end (delta: 399.5MB). Free memory was 199.0MB in the beginning and 588.3MB in the end (delta: -389.3MB). Peak memory consumption was 380.3MB. Max. memory is 8.0GB. [2023-04-02 15:50:46,359 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 15:50:46,360 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.90ms. Allocated memory is still 247.5MB. Free memory was 198.6MB in the beginning and 185.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 15:50:46,360 INFO L158 Benchmark]: Boogie Preprocessor took 34.00ms. Allocated memory is still 247.5MB. Free memory was 185.8MB in the beginning and 183.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 15:50:46,360 INFO L158 Benchmark]: RCFGBuilder took 882.21ms. Allocated memory is still 247.5MB. Free memory was 183.7MB in the beginning and 191.5MB in the end (delta: -7.8MB). Peak memory consumption was 37.3MB. Max. memory is 8.0GB. [2023-04-02 15:50:46,360 INFO L158 Benchmark]: TraceAbstraction took 101062.32ms. Allocated memory was 247.5MB in the beginning and 647.0MB in the end (delta: 399.5MB). Free memory was 191.0MB in the beginning and 588.3MB in the end (delta: -397.3MB). Peak memory consumption was 371.3MB. Max. memory is 8.0GB. [2023-04-02 15:50:46,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory is still 155.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.90ms. Allocated memory is still 247.5MB. Free memory was 198.6MB in the beginning and 185.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.00ms. Allocated memory is still 247.5MB. Free memory was 185.8MB in the beginning and 183.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 882.21ms. Allocated memory is still 247.5MB. Free memory was 183.7MB in the beginning and 191.5MB in the end (delta: -7.8MB). Peak memory consumption was 37.3MB. Max. memory is 8.0GB. * TraceAbstraction took 101062.32ms. Allocated memory was 247.5MB in the beginning and 647.0MB in the end (delta: 399.5MB). Free memory was 191.0MB in the beginning and 588.3MB in the end (delta: -397.3MB). Peak memory consumption was 371.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 101.0s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 81.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 616 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 608 mSDsluCounter, 2358 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2088 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2404 IncrementalHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 270 mSDtfsCounter, 2404 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1072 GetRequests, 747 SyntacticMatches, 8 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4579 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=4, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 150 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 175 PreInvPairs, 355 NumberOfFragments, 1394 HoareAnnotationTreeSize, 175 FomulaSimplifications, 677090 FormulaSimplificationTreeSizeReduction, 78.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 332490 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 814 NumberOfCodeBlocks, 781 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1086 ConstructedInterpolants, 0 QuantifiedInterpolants, 2969 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1313 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 22 InterpolantComputations, 3 PerfectInterpolantSequences, 484/652 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 14, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 26, TOOLS_QUANTIFIERELIM_TIME: 0.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 40, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 14, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 283, DAG_COMPRESSION_RETAINED_NODES: 71, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(\old(m) % 4294967296 == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(\old(m) % 4294967296 == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || (m == \old(m) && __retres4 == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0) && (((((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\old(m) == 0)) || \result % 4294967296 <= 0) || e == 0) || !(\valid[2] == 1)) || !(\old(e) == 0)) || unknown-#StackHeapBarrier-unknown <= 0) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(\old(m) % 4294967296 == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || ((!(\old(m) % 4294967296 == 0) && \old(e) <= e) && !(\old(m) == 1))) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || (((\old(a) % 4294967296 < \old(b) % 4294967296 && !(\old(a) % 4294967296 == 0)) || (!(\old(b) % 4294967296 == 0) && \old(b) % 4294967296 <= \old(a) % 4294967296)) && ((b == \old(b) && \old(b) % 4294967296 <= \old(a) % 4294967296) || (\old(a) % 4294967296 < \old(b) % 4294967296 && b == \old(a))))) || 0 == __retres10) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(22 == unknown-#length-unknown[2])) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0 RESULT: Ultimate proved your program to be correct! [2023-04-02 15:50:46,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...