/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/float-benchs/filter1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:20:01,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:20:01,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:20:01,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:20:01,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:20:01,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:20:01,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:20:01,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:20:01,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:20:01,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:20:01,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:20:01,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:20:01,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:20:01,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:20:01,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:20:01,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:20:01,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:20:01,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:20:01,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:20:01,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:20:01,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:20:01,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:20:01,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:20:01,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:20:01,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:20:01,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:20:01,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:20:01,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:20:01,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:20:01,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:20:01,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:20:01,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:20:01,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:20:01,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:20:01,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:20:01,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:20:01,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:20:01,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:20:01,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:20:01,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:20:01,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:20:01,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 21:20:01,437 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:20:01,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:20:01,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:20:01,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:20:01,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:20:01,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:20:01,438 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:20:01,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:20:01,438 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:20:01,438 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:20:01,439 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:20:01,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:20:01,439 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:20:01,439 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:20:01,439 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:20:01,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:20:01,440 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:20:01,440 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:20:01,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:20:01,440 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:20:01,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:20:01,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:20:01,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:20:01,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:20:01,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:20:01,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:20:01,441 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:20:01,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:20:01,442 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:20:01,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:20:01,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:20:01,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:20:01,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:20:01,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:20:01,442 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:20:01,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:20:01,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:20:01,443 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:20:01,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:20:01,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:20:01,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:20:01,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:20:01,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:20:01,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:20:01,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:20:01,634 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:20:01,634 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:20:01,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c [2023-04-02 21:20:02,604 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:20:02,747 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:20:02,747 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c [2023-04-02 21:20:02,752 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0abf36b17/f1128ffcf52d44c89c79957160458655/FLAG3558b26e9 [2023-04-02 21:20:02,762 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0abf36b17/f1128ffcf52d44c89c79957160458655 [2023-04-02 21:20:02,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:20:02,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:20:02,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:20:02,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:20:02,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:20:02,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4914d957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02, skipping insertion in model container [2023-04-02 21:20:02,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:20:02,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:20:02,890 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-benchs/filter1.c[627,640] [2023-04-02 21:20:02,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:20:02,902 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:20:02,911 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-benchs/filter1.c[627,640] [2023-04-02 21:20:02,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:20:02,922 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:20:02,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02 WrapperNode [2023-04-02 21:20:02,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:20:02,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:20:02,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:20:02,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:20:02,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,941 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:20:02,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:20:02,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:20:02,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:20:02,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (1/1) ... [2023-04-02 21:20:02,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:20:02,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:20:02,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 21:20:02,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 21:20:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:20:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:20:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:20:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 21:20:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 21:20:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 21:20:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:20:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:20:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:20:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:20:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:20:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:20:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:20:03,066 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:20:03,068 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:20:03,212 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:20:03,254 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:20:03,254 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 21:20:03,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:20:03 BoogieIcfgContainer [2023-04-02 21:20:03,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:20:03,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:20:03,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:20:03,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:20:03,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:20:02" (1/3) ... [2023-04-02 21:20:03,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcc4865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:20:03, skipping insertion in model container [2023-04-02 21:20:03,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:02" (2/3) ... [2023-04-02 21:20:03,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcc4865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:20:03, skipping insertion in model container [2023-04-02 21:20:03,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:20:03" (3/3) ... [2023-04-02 21:20:03,261 INFO L112 eAbstractionObserver]: Analyzing ICFG filter1.c [2023-04-02 21:20:03,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:20:03,289 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:20:03,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:20:03,347 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;@139f6e75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:20:03,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:20:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 21:20:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 21:20:03,356 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:20:03,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:20:03,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:20:03,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:20:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash -692175389, now seen corresponding path program 1 times [2023-04-02 21:20:03,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:20:03,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854045112] [2023-04-02 21:20:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:20:03,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:20:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:20:03,464 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 21:20:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:20:03,511 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 21:20:03,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 21:20:03,515 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 21:20:03,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:20:03,523 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-02 21:20:03,526 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:20:03,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:20:03 BoogieIcfgContainer [2023-04-02 21:20:03,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:20:03,547 INFO L158 Benchmark]: Toolchain (without parser) took 782.08ms. Allocated memory is still 186.6MB. Free memory was 139.7MB in the beginning and 100.5MB in the end (delta: 39.1MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-04-02 21:20:03,547 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:20:03,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.67ms. Allocated memory is still 186.6MB. Free memory was 139.3MB in the beginning and 129.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 21:20:03,548 INFO L158 Benchmark]: Boogie Preprocessor took 19.74ms. Allocated memory is still 186.6MB. Free memory was 129.2MB in the beginning and 127.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 21:20:03,549 INFO L158 Benchmark]: RCFGBuilder took 312.44ms. Allocated memory is still 186.6MB. Free memory was 127.5MB in the beginning and 115.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 21:20:03,553 INFO L158 Benchmark]: TraceAbstraction took 288.44ms. Allocated memory is still 186.6MB. Free memory was 114.9MB in the beginning and 100.5MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-04-02 21:20:03,556 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 186.6MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 157.67ms. Allocated memory is still 186.6MB. Free memory was 139.3MB in the beginning and 129.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.74ms. Allocated memory is still 186.6MB. Free memory was 129.2MB in the beginning and 127.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 312.44ms. Allocated memory is still 186.6MB. Free memory was 127.5MB in the beginning and 115.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 288.44ms. Allocated memory is still 186.6MB. Free memory was 114.9MB in the beginning and 100.5MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. 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: 17]: 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 41, overapproximation of to_real at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L22] double E0, E1, S; [L23] int i; [L25] E1 = 0 [L26] S = 0 [L28] i = 0 VAL [i=0] [L28] COND TRUE i <= 1000000 [L30] E0 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(E0 >= -1. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) [L31] RET assume_abort_if_not(E0 >= -1. && E0 <= 1.) VAL [i=0] [L33] COND FALSE !(__VERIFIER_nondet_int()) [L37] S = 0.999 * S + E0 - E1 [L39] E1 = E0 VAL [E0=55, E1=55, i=0] [L41] CALL __VERIFIER_assert(S >= -10000. && S <= 10000.) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2023-04-02 21:20:03,580 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...