/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:05:56,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:05:56,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:05:56,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:05:56,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:05:56,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:05:56,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:05:56,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:05:56,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:05:56,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:05:56,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:05:56,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:05:56,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:05:56,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:05:56,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:05:56,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:05:56,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:05:56,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:05:56,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:05:56,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:05:56,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:05:56,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:05:56,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:05:56,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:05:56,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:05:56,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:05:56,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:05:56,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:05:56,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:05:56,834 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:05:56,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:05:56,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:05:56,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:05:56,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:05:56,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:05:56,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:05:56,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:05:56,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:05:56,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:05:56,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:05:56,837 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:05:56,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:05:56,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:05:56,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:05:56,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:05:56,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:05:56,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:05:56,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:05:56,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:05:56,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:05:56,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:05:56,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:05:56,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:05:56,839 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:05:56,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:05:56,839 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:05:56,839 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:05:57,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:05:57,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:05:57,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:05:57,086 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:05:57,087 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:05:57,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2023-03-31 00:05:58,064 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:05:58,298 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:05:58,299 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2023-03-31 00:05:58,304 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15c4f74c/a66308e34696415385a389a6006a9693/FLAGb4f308893 [2023-03-31 00:05:58,319 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15c4f74c/a66308e34696415385a389a6006a9693 [2023-03-31 00:05:58,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:05:58,323 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:05:58,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:05:58,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:05:58,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:05:58,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44eb3b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58, skipping insertion in model container [2023-03-31 00:05:58,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:05:58,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:05:58,491 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/float-newlib/float_req_bl_1231.c[1835,1848] [2023-03-31 00:05:58,496 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/float-newlib/float_req_bl_1231.c[1994,2007] [2023-03-31 00:05:58,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:05:58,508 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:05:58,539 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/float-newlib/float_req_bl_1231.c[1835,1848] [2023-03-31 00:05:58,541 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/float-newlib/float_req_bl_1231.c[1994,2007] [2023-03-31 00:05:58,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:05:58,556 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:05:58,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58 WrapperNode [2023-03-31 00:05:58,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:05:58,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:05:58,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:05:58,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:05:58,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,603 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:05:58,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:05:58,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:05:58,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:05:58,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (1/1) ... [2023-03-31 00:05:58,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:05:58,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:05:58,640 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) [2023-03-31 00:05:58,702 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 [2023-03-31 00:05:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:05:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:05:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:05:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2023-03-31 00:05:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2023-03-31 00:05:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2023-03-31 00:05:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2023-03-31 00:05:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:05:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:05:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:05:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:05:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:05:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-03-31 00:05:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2023-03-31 00:05:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:05:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:05:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 00:05:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:05:58,788 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:05:58,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:05:58,975 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:05:58,980 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:05:58,980 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-03-31 00:05:58,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:05:58 BoogieIcfgContainer [2023-03-31 00:05:58,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:05:58,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:05:58,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:05:58,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:05:58,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:05:58" (1/3) ... [2023-03-31 00:05:58,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387de01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:05:58, skipping insertion in model container [2023-03-31 00:05:58,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:58" (2/3) ... [2023-03-31 00:05:58,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387de01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:05:58, skipping insertion in model container [2023-03-31 00:05:58,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:05:58" (3/3) ... [2023-03-31 00:05:58,988 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2023-03-31 00:05:59,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:05:59,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-03-31 00:05:59,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:05:59,077 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=PETRI_NET, 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;@3a35d5b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:05:59,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-03-31 00:05:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 45 states have internal predecessors, (61), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-03-31 00:05:59,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-03-31 00:05:59,090 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:59,091 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-31 00:05:59,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:59,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash 158695797, now seen corresponding path program 1 times [2023-03-31 00:05:59,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:59,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462701491] [2023-03-31 00:05:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:59,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 00:05:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:05:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 00:05:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-31 00:05:59,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462701491] [2023-03-31 00:05:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462701491] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:59,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:59,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:05:59,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069032035] [2023-03-31 00:05:59,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:59,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:05:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:59,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:05:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:05:59,392 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 45 states have internal predecessors, (61), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 00:05:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:05:59,680 INFO L93 Difference]: Finished difference Result 108 states and 147 transitions. [2023-03-31 00:05:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:05:59,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-03-31 00:05:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:05:59,723 INFO L225 Difference]: With dead ends: 108 [2023-03-31 00:05:59,723 INFO L226 Difference]: Without dead ends: 59 [2023-03-31 00:05:59,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:05:59,729 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 84 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:05:59,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 7 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:05:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-03-31 00:05:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-03-31 00:05:59,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.3) internal successors, (52), 41 states have internal predecessors, (52), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-03-31 00:05:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2023-03-31 00:05:59,776 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 36 [2023-03-31 00:05:59,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:05:59,778 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2023-03-31 00:05:59,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 00:05:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2023-03-31 00:05:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-03-31 00:05:59,780 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:59,781 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-31 00:05:59,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:05:59,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:59,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash 287477847, now seen corresponding path program 1 times [2023-03-31 00:05:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:59,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448421201] [2023-03-31 00:05:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:59,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 00:05:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:05:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-03-31 00:05:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-31 00:05:59,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:59,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448421201] [2023-03-31 00:05:59,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448421201] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:59,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:59,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:05:59,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066426390] [2023-03-31 00:05:59,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:59,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:05:59,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:59,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:05:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:05:59,956 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 00:06:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:00,214 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2023-03-31 00:06:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 00:06:00,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-03-31 00:06:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:00,216 INFO L225 Difference]: With dead ends: 108 [2023-03-31 00:06:00,216 INFO L226 Difference]: Without dead ends: 68 [2023-03-31 00:06:00,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-03-31 00:06:00,218 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 107 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:00,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 7 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:06:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-03-31 00:06:00,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2023-03-31 00:06:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-03-31 00:06:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2023-03-31 00:06:00,227 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 37 [2023-03-31 00:06:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:00,227 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2023-03-31 00:06:00,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 00:06:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2023-03-31 00:06:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 00:06:00,229 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:00,229 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1] [2023-03-31 00:06:00,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:06:00,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:00,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:00,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1150547848, now seen corresponding path program 1 times [2023-03-31 00:06:00,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:00,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203246312] [2023-03-31 00:06:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:00,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:06:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 00:06:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-31 00:06:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:06:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-03-31 00:06:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:06:00,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:00,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203246312] [2023-03-31 00:06:00,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203246312] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:06:00,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:06:00,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:06:00,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995629310] [2023-03-31 00:06:00,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:06:00,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:06:00,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:06:00,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:06:00,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:06:00,440 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 00:06:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:00,646 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2023-03-31 00:06:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:06:00,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-03-31 00:06:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:00,649 INFO L225 Difference]: With dead ends: 87 [2023-03-31 00:06:00,649 INFO L226 Difference]: Without dead ends: 65 [2023-03-31 00:06:00,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:06:00,655 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:00,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 7 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:06:00,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-03-31 00:06:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-03-31 00:06:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 46 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2023-03-31 00:06:00,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2023-03-31 00:06:00,675 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 42 [2023-03-31 00:06:00,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:00,675 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2023-03-31 00:06:00,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 00:06:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2023-03-31 00:06:00,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-03-31 00:06:00,678 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:00,678 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1] [2023-03-31 00:06:00,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 00:06:00,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:00,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:00,679 INFO L85 PathProgramCache]: Analyzing trace with hash 638998509, now seen corresponding path program 1 times [2023-03-31 00:06:00,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:00,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789459352] [2023-03-31 00:06:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:06:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 00:06:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-31 00:06:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:06:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 00:06:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:06:00,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:00,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789459352] [2023-03-31 00:06:00,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789459352] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:06:00,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:06:00,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:06:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742978700] [2023-03-31 00:06:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:06:00,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:06:00,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:06:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:06:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:06:00,779 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 00:06:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:00,950 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2023-03-31 00:06:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:06:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 45 [2023-03-31 00:06:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:00,951 INFO L225 Difference]: With dead ends: 91 [2023-03-31 00:06:00,951 INFO L226 Difference]: Without dead ends: 69 [2023-03-31 00:06:00,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:06:00,952 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:00,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 7 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:06:00,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-03-31 00:06:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2023-03-31 00:06:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 46 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2023-03-31 00:06:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2023-03-31 00:06:00,958 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 45 [2023-03-31 00:06:00,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:00,959 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2023-03-31 00:06:00,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 00:06:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2023-03-31 00:06:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-03-31 00:06:00,960 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:00,960 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1] [2023-03-31 00:06:00,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 00:06:00,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:00,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:00,961 INFO L85 PathProgramCache]: Analyzing trace with hash 128464332, now seen corresponding path program 1 times [2023-03-31 00:06:00,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:00,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140584907] [2023-03-31 00:06:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:00,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:06:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:06:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-03-31 00:06:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-03-31 00:06:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:06:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-03-31 00:06:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:06:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:06:01,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:06:01,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140584907] [2023-03-31 00:06:01,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140584907] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:06:01,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:06:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 00:06:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258231900] [2023-03-31 00:06:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:06:01,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 00:06:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:06:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 00:06:01,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:06:01,021 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 00:06:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:06:01,162 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2023-03-31 00:06:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 00:06:01,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2023-03-31 00:06:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:06:01,163 INFO L225 Difference]: With dead ends: 68 [2023-03-31 00:06:01,163 INFO L226 Difference]: Without dead ends: 66 [2023-03-31 00:06:01,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:06:01,164 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 76 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:06:01,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 5 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:06:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-03-31 00:06:01,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-03-31 00:06:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2023-03-31 00:06:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2023-03-31 00:06:01,170 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 45 [2023-03-31 00:06:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:06:01,170 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2023-03-31 00:06:01,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 00:06:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2023-03-31 00:06:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-03-31 00:06:01,171 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:06:01,171 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:06:01,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 00:06:01,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:06:01,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:06:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1502586724, now seen corresponding path program 1 times [2023-03-31 00:06:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:06:01,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187738593] [2023-03-31 00:06:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:06:01,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:06:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:06:01,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:06:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:06:01,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:06:01,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:06:01,237 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-03-31 00:06:01,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-03-31 00:06:01,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 00:06:01,240 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-03-31 00:06:01,242 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:06:01,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:06:01 BoogieIcfgContainer [2023-03-31 00:06:01,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:06:01,262 INFO L158 Benchmark]: Toolchain (without parser) took 2939.36ms. Allocated memory was 180.4MB in the beginning and 271.6MB in the end (delta: 91.2MB). Free memory was 147.2MB in the beginning and 238.1MB in the end (delta: -90.9MB). Peak memory consumption was 2.4MB. Max. memory is 8.0GB. [2023-03-31 00:06:01,262 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:06:01,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.32ms. Allocated memory is still 180.4MB. Free memory was 146.8MB in the beginning and 135.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:06:01,262 INFO L158 Benchmark]: Boogie Preprocessor took 48.14ms. Allocated memory is still 180.4MB. Free memory was 135.6MB in the beginning and 133.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:06:01,263 INFO L158 Benchmark]: RCFGBuilder took 375.52ms. Allocated memory is still 180.4MB. Free memory was 133.8MB in the beginning and 117.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-03-31 00:06:01,263 INFO L158 Benchmark]: TraceAbstraction took 2279.11ms. Allocated memory was 180.4MB in the beginning and 271.6MB in the end (delta: 91.2MB). Free memory was 116.8MB in the beginning and 238.1MB in the end (delta: -121.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:06:01,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.32ms. Allocated memory is still 180.4MB. Free memory was 146.8MB in the beginning and 135.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.14ms. Allocated memory is still 180.4MB. Free memory was 135.6MB in the beginning and 133.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 375.52ms. Allocated memory is still 180.4MB. Free memory was 133.8MB in the beginning and 117.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 2279.11ms. Allocated memory was 180.4MB in the beginning and 271.6MB in the end (delta: 91.2MB). Free memory was 116.8MB in the beginning and 238.1MB in the end (delta: -121.3MB). There was no memory consumed. 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 - UnprovableResult [Line: 77]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L70] CALL, EXPR isnan_float(x) VAL [\old(x)=2139095051] [L59] return x != x; VAL [\old(x)=2139095051, \result=1, x=2139095051] [L70] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=2139095051] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x) && !isnan_float(y)=1, isnan_float(x)=1, x=2139095051] [L70] CALL, EXPR isnan_float(y) VAL [\old(x)=2139095050] [L59] return x != x; VAL [\old(x)=2139095050, \result=0, x=2139095050] [L70] RET, EXPR isnan_float(y) VAL [isnan_float(x) && !isnan_float(y)=1, isnan_float(x)=1, isnan_float(y)=0, x=2139095051, y=2139095050] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x) && !isnan_float(y)=1, isnan_float(x)=1, isnan_float(y)=0, x=2139095051, y=2139095050] [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(x)=1, isnan_float(y)=0, x=2139095051, y=2139095050] [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L73] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095051, \old(y)=2139095050] [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095051] [L15] __uint32_t w; VAL [\old(x)=2139095051, x=2139095051] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095051, w=2139095041, x=2139095051] [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095051, w=2139095041, x=2139095051] [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095051, w=2139095041, x=2139095051] [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; VAL [\old(x)=2139095051, \result=0, w=2139095041, x=2139095051] [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095051, \old(y)=2139095050, __fpclassify_float(x)=0, x=2139095051, y=2139095050] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=2139095051, \old(y)=2139095050, \result=2139095050, x=2139095051, y=2139095050] [L73] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095050, x=2139095051, y=2139095050] [L73] float res = fmin_float(x, y); [L76] CALL, EXPR isnan_float(x) VAL [\old(x)=2139095051] [L59] return x != x; VAL [\old(x)=2139095051, \result=1, x=2139095051] [L76] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=2139095050, x=2139095051, y=2139095050] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x) && !isnan_float(y)=1, isnan_float(x)=1, res=2139095050, x=2139095051, y=2139095050] [L76] CALL, EXPR isnan_float(y) VAL [\old(x)=2139095050] [L59] return x != x; VAL [\old(x)=2139095050, \result=0, x=2139095050] [L76] RET, EXPR isnan_float(y) VAL [isnan_float(x) && !isnan_float(y)=1, isnan_float(x)=1, isnan_float(y)=0, res=2139095050, x=2139095051, y=2139095050] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x) && !isnan_float(y)=1, isnan_float(x)=1, isnan_float(y)=0, res=2139095050, x=2139095051, y=2139095050] [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() VAL [res=2139095050, x=2139095051, y=2139095050] - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 73 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 450 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 423 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1103 IncrementalHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 163 mSolverCounterUnsat, 17 mSDtfsCounter, 1103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=5, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 33/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-03-31 00:06:01,277 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...