/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 IntervalDomain -i ../sv-benchmarks/c/float-newlib/double_req_bl_1211b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:46:03,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:46:03,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:46:03,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:46:03,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:46:03,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:46:03,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:46:03,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:46:03,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:46:03,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:46:03,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:46:03,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:46:03,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:46:03,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:46:03,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:46:03,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:46:03,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:46:03,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:46:03,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:46:03,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:46:03,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:46:03,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:46:03,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:46:03,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:46:03,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:46:03,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:46:03,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:46:03,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:46:03,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:46:03,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:46:03,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:46:03,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:46:03,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:46:03,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:46:03,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:46:03,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:46:03,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:46:03,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:46:03,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:46:03,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:46:03,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:46:03,908 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 [2023-03-31 22:46:03,927 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:46:03,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:46:03,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:46:03,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:46:03,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:46:03,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:46:03,929 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:46:03,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:46:03,929 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:46:03,929 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:46:03,929 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:46:03,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:46:03,929 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:46:03,930 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:46:03,930 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:46:03,930 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:46:03,930 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:46:03,930 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:46:03,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:46:03,930 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:46:03,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:46:03,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:46:03,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:46:03,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:46:03,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:46:03,932 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:46:03,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:46:03,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:46:03,932 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:46:03,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:46:03,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:46:03,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:46:03,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:46:04,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:46:04,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:46:04,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:46:04,142 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:46:04,142 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:46:04,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1211b.c [2023-03-31 22:46:05,259 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:46:05,480 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:46:05,480 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1211b.c [2023-03-31 22:46:05,485 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa3aca117/09e821f67f1e4c6db948b474b24d445e/FLAG1ac203af1 [2023-03-31 22:46:05,495 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa3aca117/09e821f67f1e4c6db948b474b24d445e [2023-03-31 22:46:05,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:46:05,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:46:05,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:46:05,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:46:05,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:46:05,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee78743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05, skipping insertion in model container [2023-03-31 22:46:05,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:46:05,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:46:05,673 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/double_req_bl_1211b.c[3718,3731] [2023-03-31 22:46:05,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:46:05,685 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:46:05,724 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/double_req_bl_1211b.c[3718,3731] [2023-03-31 22:46:05,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:46:05,739 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:46:05,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05 WrapperNode [2023-03-31 22:46:05,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:46:05,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:46:05,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:46:05,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:46:05,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:46:05,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:46:05,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:46:05,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:46:05,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (1/1) ... [2023-03-31 22:46:05,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:46:05,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:46:05,819 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 22:46:05,824 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 22:46:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:46:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:46:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:46:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2023-03-31 22:46:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2023-03-31 22:46:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2023-03-31 22:46:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2023-03-31 22:46:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 22:46:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:46:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:46:05,921 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:46:05,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:46:06,302 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:46:06,469 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:46:06,469 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-03-31 22:46:06,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:46:06 BoogieIcfgContainer [2023-03-31 22:46:06,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:46:06,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:46:06,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:46:06,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:46:06,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:46:05" (1/3) ... [2023-03-31 22:46:06,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0d74dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:46:06, skipping insertion in model container [2023-03-31 22:46:06,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:46:05" (2/3) ... [2023-03-31 22:46:06,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0d74dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:46:06, skipping insertion in model container [2023-03-31 22:46:06,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:46:06" (3/3) ... [2023-03-31 22:46:06,482 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1211b.c [2023-03-31 22:46:06,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:46:06,499 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:46:06,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:46:06,555 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;@4dc9c51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:46:06,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:46:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 55 states have internal predecessors, (87), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 22:46:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-03-31 22:46:06,565 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:46:06,565 INFO L195 NwaCegarLoop]: trace histogram [1, 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 22:46:06,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:46:06,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:46:06,569 INFO L85 PathProgramCache]: Analyzing trace with hash -284256820, now seen corresponding path program 1 times [2023-03-31 22:46:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:46:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105869638] [2023-03-31 22:46:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:46:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:46:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:46:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:46:06,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:46:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105869638] [2023-03-31 22:46:06,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105869638] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:46:06,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:46:06,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 22:46:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852125475] [2023-03-31 22:46:06,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:46:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 22:46:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:46:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 22:46:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:46:06,827 INFO L87 Difference]: Start difference. First operand has 66 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 55 states have internal predecessors, (87), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 22:46:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:46:06,890 INFO L93 Difference]: Finished difference Result 125 states and 189 transitions. [2023-03-31 22:46:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 22:46:06,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-03-31 22:46:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:46:06,902 INFO L225 Difference]: With dead ends: 125 [2023-03-31 22:46:06,903 INFO L226 Difference]: Without dead ends: 62 [2023-03-31 22:46:06,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 22:46:06,911 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:46:06,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:46:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-03-31 22:46:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-03-31 22:46:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 52 states have internal predecessors, (59), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 22:46:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2023-03-31 22:46:06,948 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 25 [2023-03-31 22:46:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:46:06,949 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2023-03-31 22:46:06,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 22:46:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2023-03-31 22:46:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-03-31 22:46:06,950 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:46:06,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 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 22:46:06,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:46:06,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:46:06,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:46:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -650496264, now seen corresponding path program 1 times [2023-03-31 22:46:06,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:46:06,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351048066] [2023-03-31 22:46:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:46:06,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:46:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:46:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:46:07,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:46:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351048066] [2023-03-31 22:46:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351048066] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:46:07,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:46:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:46:07,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028627206] [2023-03-31 22:46:07,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:46:07,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:46:07,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:46:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:46:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:46:07,096 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 22:46:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:46:07,142 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2023-03-31 22:46:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:46:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-03-31 22:46:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:46:07,144 INFO L225 Difference]: With dead ends: 65 [2023-03-31 22:46:07,145 INFO L226 Difference]: Without dead ends: 62 [2023-03-31 22:46:07,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:46:07,146 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:46:07,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:46:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-03-31 22:46:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-03-31 22:46:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 22:46:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2023-03-31 22:46:07,151 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 28 [2023-03-31 22:46:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:46:07,151 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2023-03-31 22:46:07,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 22:46:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2023-03-31 22:46:07,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 22:46:07,152 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:46:07,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 22:46:07,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:46:07,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:46:07,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:46:07,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1927914639, now seen corresponding path program 1 times [2023-03-31 22:46:07,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:46:07,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499183291] [2023-03-31 22:46:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:46:07,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:46:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:46:07,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:46:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:46:07,390 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:46:07,391 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:46:07,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:46:07,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 22:46:07,395 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 22:46:07,398 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:46:07,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:46:07 BoogieIcfgContainer [2023-03-31 22:46:07,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:46:07,432 INFO L158 Benchmark]: Toolchain (without parser) took 1933.61ms. Allocated memory was 191.9MB in the beginning and 300.9MB in the end (delta: 109.1MB). Free memory was 156.4MB in the beginning and 195.1MB in the end (delta: -38.6MB). Peak memory consumption was 71.7MB. Max. memory is 8.0GB. [2023-03-31 22:46:07,432 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:46:07,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.52ms. Allocated memory is still 191.9MB. Free memory was 156.1MB in the beginning and 142.8MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-03-31 22:46:07,435 INFO L158 Benchmark]: Boogie Preprocessor took 31.94ms. Allocated memory is still 191.9MB. Free memory was 142.8MB in the beginning and 140.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 22:46:07,439 INFO L158 Benchmark]: RCFGBuilder took 698.66ms. Allocated memory was 191.9MB in the beginning and 300.9MB in the end (delta: 109.1MB). Free memory was 140.4MB in the beginning and 271.1MB in the end (delta: -130.7MB). Peak memory consumption was 64.4MB. Max. memory is 8.0GB. [2023-03-31 22:46:07,439 INFO L158 Benchmark]: TraceAbstraction took 955.12ms. Allocated memory is still 300.9MB. Free memory was 270.0MB in the beginning and 195.1MB in the end (delta: 75.0MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. [2023-03-31 22:46:07,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 241.52ms. Allocated memory is still 191.9MB. Free memory was 156.1MB in the beginning and 142.8MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.94ms. Allocated memory is still 191.9MB. Free memory was 142.8MB in the beginning and 140.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 698.66ms. Allocated memory was 191.9MB in the beginning and 300.9MB in the end (delta: 109.1MB). Free memory was 140.4MB in the beginning and 271.1MB in the end (delta: -130.7MB). Peak memory consumption was 64.4MB. Max. memory is 8.0GB. * TraceAbstraction took 955.12ms. Allocated memory is still 300.9MB. Free memory was 270.0MB in the beginning and 195.1MB in the end (delta: 75.0MB). Peak memory consumption was 74.4MB. 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: 152]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 151, overapproximation of bitwiseOr at line 122, overapproximation of someBinaryArithmeticDOUBLEoperation at line 146. Possible FailurePath: [L20] static const double one_modf = 1.0; [L146] double x = -1.0 / 0.0; [L147] double iptr = __VERIFIER_nondet_double(); [L147] double iptr = __VERIFIER_nondet_double(); [L148] CALL, EXPR modf_double(x, &iptr) VAL [\old(x)=2146435074, iptr={6:0}, one_modf=1] [L23] __int32_t i0, i1, j0; [L24] __uint32_t i; VAL [\old(x)=2146435074, iptr={6:0}, iptr={6:0}, one_modf=1, x=2146435074] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (i0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (i1) = ew_u.parts.lsw [L31] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=2146435074, i0=1072693247, i1=-1, iptr={6:0}, iptr={6:0}, j0=-1, one_modf=1, x=2146435074] [L32] COND TRUE j0 < 20 VAL [\old(x)=2146435074, i0=1072693247, i1=-1, iptr={6:0}, iptr={6:0}, j0=-1, one_modf=1, x=2146435074] [L33] COND TRUE j0 < 0 VAL [\old(x)=2146435074, i0=1072693247, i1=-1, iptr={6:0}, iptr={6:0}, j0=-1, one_modf=1, x=2146435074] [L35] ieee_double_shape_type iw_u; [L36] iw_u.parts.msw = (i0 & 0x80000000) [L37] iw_u.parts.lsw = (0) [L38] EXPR iw_u.value [L38] (*iptr) = iw_u.value [L40] return x; VAL [\old(x)=2146435074, \result=2146435074, i0=1072693247, i1=-1, iptr={6:0}, iptr={6:0}, j0=-1, one_modf=1, x=2146435074] [L148] RET, EXPR modf_double(x, &iptr) VAL [iptr={6:0}, modf_double(x, &iptr)=2146435074, one_modf=1, x=2146435074] [L148] double res = modf_double(x, &iptr); [L151] EXPR \read(iptr) VAL [\read(iptr)=2146435076, iptr={6:0}, one_modf=1, res=2146435074, x=2146435074] [L151] CALL, EXPR isinf_double(iptr) VAL [\old(x)=2146435076, one_modf=1] [L114] __int32_t hx, lx; VAL [\old(x)=2146435076, one_modf=1, x=2146435076] [L116] ieee_double_shape_type ew_u; [L117] ew_u.value = (x) [L118] EXPR ew_u.parts.msw [L118] (hx) = ew_u.parts.msw [L119] EXPR ew_u.parts.lsw [L119] (lx) = ew_u.parts.lsw [L121] hx &= 0x7fffffff [L122] EXPR lx | (-lx) [L122] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L123] hx = 0x7ff00000 - hx [L124] EXPR hx | (-hx) [L124] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L151] RET, EXPR isinf_double(iptr) VAL [\read(iptr)=2146435076, iptr={6:0}, isinf_double(iptr)=1, one_modf=1, res=2146435074, x=2146435074] [L151] isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) [L151] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [\read(iptr)=2146435076, iptr={6:0}, isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1)=1, isinf_double(iptr)=1, one_modf=1, res == -0.0 && __signbit_double(res) == 1=0, res=2146435074, x=2146435074] [L151] isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) VAL [\read(iptr)=2146435076, iptr={6:0}, isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1)=1, isinf_double(iptr)=1, one_modf=1, res == -0.0 && __signbit_double(res) == 1=0, res=2146435074, x=2146435074] [L151] COND TRUE isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) [L152] reach_error() VAL [iptr={6:0}, one_modf=1, res=2146435074, x=2146435074] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 182 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 126 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 22:46:07,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...