/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 EqDomain -i ../sv-benchmarks/c/float-benchs/filter2_alt.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 10:47:24,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 10:47:24,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 10:47:24,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 10:47:24,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 10:47:24,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 10:47:24,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 10:47:24,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 10:47:24,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 10:47:24,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 10:47:24,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 10:47:24,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 10:47:24,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 10:47:24,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 10:47:24,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 10:47:24,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 10:47:24,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 10:47:24,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 10:47:24,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 10:47:24,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 10:47:24,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 10:47:24,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 10:47:24,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 10:47:24,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 10:47:24,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 10:47:24,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 10:47:24,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 10:47:24,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 10:47:24,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 10:47:24,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 10:47:24,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 10:47:24,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 10:47:24,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 10:47:24,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 10:47:24,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 10:47:24,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 10:47:24,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 10:47:24,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 10:47:24,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 10:47:24,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 10:47:24,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 10:47:24,148 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 [2023-04-01 10:47:24,170 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 10:47:24,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 10:47:24,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 10:47:24,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 10:47:24,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 10:47:24,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 10:47:24,171 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 10:47:24,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 10:47:24,172 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 10:47:24,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 10:47:24,172 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 10:47:24,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 10:47:24,172 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 10:47:24,172 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 10:47:24,172 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 10:47:24,173 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 10:47:24,173 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 10:47:24,173 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 10:47:24,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 10:47:24,174 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 10:47:24,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 10:47:24,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 10:47:24,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 10:47:24,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 10:47:24,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 10:47:24,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 10:47:24,175 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 10:47:24,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 10:47:24,176 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 10:47:24,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 10:47:24,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 10:47:24,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 10:47:24,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:47:24,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 10:47:24,176 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 10:47:24,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 10:47:24,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 10:47:24,177 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 10:47:24,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 10:47:24,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 10:47:24,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 10:47:24,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 10:47:24,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 10:47:24,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 10:47:24,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 10:47:24,415 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 10:47:24,416 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 10:47:24,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_alt.c [2023-04-01 10:47:25,593 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 10:47:25,786 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 10:47:25,786 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_alt.c [2023-04-01 10:47:25,791 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30f91551/e8eb11a4f2ed43d89f3455451a64e44a/FLAG6cb10a4e0 [2023-04-01 10:47:25,805 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30f91551/e8eb11a4f2ed43d89f3455451a64e44a [2023-04-01 10:47:25,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 10:47:25,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 10:47:25,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 10:47:25,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 10:47:25,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 10:47:25,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:47:25" (1/1) ... [2023-04-01 10:47:25,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a52b952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:25, skipping insertion in model container [2023-04-01 10:47:25,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:47:25" (1/1) ... [2023-04-01 10:47:25,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 10:47:25,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 10:47:25,954 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/filter2_alt.c[631,644] [2023-04-01 10:47:25,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:47:25,987 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 10:47:25,998 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/filter2_alt.c[631,644] [2023-04-01 10:47:26,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:47:26,019 INFO L208 MainTranslator]: Completed translation [2023-04-01 10:47:26,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26 WrapperNode [2023-04-01 10:47:26,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 10:47:26,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 10:47:26,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 10:47:26,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 10:47:26,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 10:47:26,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 10:47:26,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 10:47:26,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 10:47:26,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (1/1) ... [2023-04-01 10:47:26,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:47:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:47:26,100 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) [2023-04-01 10:47:26,104 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 [2023-04-01 10:47:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 10:47:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 10:47:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 10:47:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 10:47:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 10:47:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2023-04-01 10:47:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure filter2 [2023-04-01 10:47:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 10:47:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure filter2 [2023-04-01 10:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-01 10:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-01 10:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 10:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 10:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 10:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-04-01 10:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 10:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 10:47:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 10:47:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 10:47:26,276 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 10:47:26,278 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 10:47:26,444 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 10:47:26,468 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 10:47:26,469 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 10:47:26,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:47:26 BoogieIcfgContainer [2023-04-01 10:47:26,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 10:47:26,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 10:47:26,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 10:47:26,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 10:47:26,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:47:25" (1/3) ... [2023-04-01 10:47:26,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:47:26, skipping insertion in model container [2023-04-01 10:47:26,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:47:26" (2/3) ... [2023-04-01 10:47:26,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc357b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:47:26, skipping insertion in model container [2023-04-01 10:47:26,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:47:26" (3/3) ... [2023-04-01 10:47:26,479 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_alt.c [2023-04-01 10:47:26,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 10:47:26,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 10:47:26,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 10:47:26,537 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;@320ac870, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 10:47:26,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 10:47:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 10:47:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 10:47:26,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:47:26,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:47:26,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:47:26,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:47:26,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1235757794, now seen corresponding path program 1 times [2023-04-01 10:47:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:47:26,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967567958] [2023-04-01 10:47:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:47:26,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:47:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:47:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 10:47:26,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:47:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967567958] [2023-04-01 10:47:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967567958] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:47:26,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:47:26,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:47:26,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874439960] [2023-04-01 10:47:26,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:47:26,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:47:26,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:47:26,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:47:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:47:26,915 INFO L87 Difference]: Start difference. First operand has 30 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 10:47:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:47:26,987 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2023-04-01 10:47:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:47:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2023-04-01 10:47:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:47:26,997 INFO L225 Difference]: With dead ends: 65 [2023-04-01 10:47:26,997 INFO L226 Difference]: Without dead ends: 41 [2023-04-01 10:47:27,001 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 [2023-04-01 10:47:27,007 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 10:47:27,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 48 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 10:47:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-01 10:47:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-04-01 10:47:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-01 10:47:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-04-01 10:47:27,049 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 27 [2023-04-01 10:47:27,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:47:27,050 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-04-01 10:47:27,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 10:47:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-04-01 10:47:27,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-01 10:47:27,052 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:47:27,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:47:27,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 10:47:27,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:47:27,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:47:27,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1689280141, now seen corresponding path program 1 times [2023-04-01 10:47:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:47:27,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401644614] [2023-04-01 10:47:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:47:27,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:47:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:47:27,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 10:47:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:47:27,213 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 10:47:27,213 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 10:47:27,215 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 10:47:27,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 10:47:27,220 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 10:47:27,223 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 10:47:27,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 10:47:27 BoogieIcfgContainer [2023-04-01 10:47:27,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 10:47:27,277 INFO L158 Benchmark]: Toolchain (without parser) took 1468.18ms. Allocated memory is still 234.9MB. Free memory was 196.6MB in the beginning and 128.4MB in the end (delta: 68.2MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. [2023-04-01 10:47:27,277 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 10:47:27,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.35ms. Allocated memory is still 234.9MB. Free memory was 196.0MB in the beginning and 185.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 10:47:27,279 INFO L158 Benchmark]: Boogie Preprocessor took 55.38ms. Allocated memory is still 234.9MB. Free memory was 185.0MB in the beginning and 183.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 10:47:27,280 INFO L158 Benchmark]: RCFGBuilder took 394.97ms. Allocated memory is still 234.9MB. Free memory was 183.5MB in the beginning and 169.3MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-01 10:47:27,280 INFO L158 Benchmark]: TraceAbstraction took 802.59ms. Allocated memory is still 234.9MB. Free memory was 168.8MB in the beginning and 128.4MB in the end (delta: 40.4MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-04-01 10:47:27,282 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 195.0MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.35ms. Allocated memory is still 234.9MB. Free memory was 196.0MB in the beginning and 185.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.38ms. Allocated memory is still 234.9MB. Free memory was 185.0MB in the beginning and 183.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 394.97ms. Allocated memory is still 234.9MB. Free memory was 183.5MB in the beginning and 169.3MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 802.59ms. Allocated memory is still 234.9MB. Free memory was 168.8MB in the beginning and 128.4MB in the end (delta: 40.4MB). Peak memory consumption was 39.8MB. 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: 14]: 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 43, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L19] BOOLEAN INIT; [L20] float P, X; [L32] static float E[2], S[2]; [L52] CALL, EXPR RANDOM_INPUT() VAL [E={4:0}, INIT=0, P=0, S={5:0}, X=0, \old(INIT)=0, \old(P)=0, \old(X)=0] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) VAL [E={4:0}, INIT=0, P=0, S={5:0}, X=0, \old(INIT)=0, \old(P)=0, \old(X)=0, \old(cond)=1] [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) VAL [E={4:0}, INIT=0, P=0, S={5:0}, X=0, \old(INIT)=0, \old(P)=0, \old(X)=0, x=64] [L27] return x; [L52] RET, EXPR RANDOM_INPUT() VAL [E={4:0}, INIT=0, P=0, RANDOM_INPUT()=64, S={5:0}, X=0, \old(INIT)=0, \old(P)=0, \old(X)=0] [L52] X = RANDOM_INPUT() [L53] INIT = TRUE VAL [E={4:0}, INIT=1, P=0, S={5:0}, X=64, \old(INIT)=0, \old(P)=0, \old(X)=0] [L54] COND TRUE \read(TRUE) VAL [E={4:0}, INIT=1, P=0, S={5:0}, X=64, \old(INIT)=0, \old(P)=0, \old(X)=0] [L55] CALL, EXPR RANDOM_INPUT() VAL [E={4:0}, INIT=1, P=0, S={5:0}, X=64, \old(INIT)=0, \old(P)=0, \old(X)=0] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) VAL [E={4:0}, INIT=1, P=0, S={5:0}, X=64, \old(INIT)=0, \old(P)=0, \old(X)=0, \old(cond)=1] [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) VAL [E={4:0}, INIT=1, P=0, S={5:0}, X=64, \old(INIT)=0, \old(P)=0, \old(X)=0, x=63] [L27] return x; [L55] RET, EXPR RANDOM_INPUT() VAL [E={4:0}, INIT=1, P=0, RANDOM_INPUT()=63, S={5:0}, X=64, \old(INIT)=0, \old(P)=0, \old(X)=0] [L55] X = RANDOM_INPUT() [L56] CALL filter2 () VAL [E={4:0}, INIT=1, P=0, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0] [L33] COND TRUE \read(INIT) [L34] S[0] = X [L35] P = X [L36] E[0] = X VAL [E={4:0}, INIT=1, P=63, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0] [L46] EXPR E[0] [L46] E[1] = E[0] [L46] E[0] = X [L47] EXPR S[0] [L47] S[1] = S[0] [L47] S[0] = P [L56] RET filter2 () VAL [E={4:0}, INIT=1, P=63, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0] [L57] INIT = FALSE VAL [E={4:0}, INIT=0, P=63, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0] [L54] COND TRUE \read(TRUE) VAL [E={4:0}, INIT=0, P=63, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0] [L55] CALL, EXPR RANDOM_INPUT() VAL [E={4:0}, INIT=0, P=63, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) VAL [E={4:0}, INIT=0, P=63, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0, \old(cond)=1] [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) VAL [E={4:0}, INIT=0, P=63, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0, x=65] [L27] return x; [L55] RET, EXPR RANDOM_INPUT() VAL [E={4:0}, INIT=0, P=63, RANDOM_INPUT()=65, S={5:0}, X=63, \old(INIT)=0, \old(P)=0, \old(X)=0] [L55] X = RANDOM_INPUT() [L56] CALL filter2 () VAL [E={4:0}, INIT=0, P=63, S={5:0}, X=65, \old(INIT)=0, \old(P)=63, \old(X)=0] [L33] COND FALSE !(\read(INIT)) [L39] EXPR E[0] [L40] EXPR E[1] [L41] EXPR S[0] [L42] EXPR S[1] [L38-L42] P = (((((0.4677826f * X) - (E[0] * 0.7700725f)) + (E[1] * 0.4344376f)) + (S[0] * 1.5419f)) - (S[1] * 0.6740477f)) [L43] CALL __VERIFIER_assert(P >= -15.f && P <= 15.f) VAL [E={4:0}, INIT=0, S={5:0}, X=65, \old(INIT)=0, \old(P)=63, \old(X)=0, \old(cond)=0] [L14] COND TRUE !(cond) VAL [E={4:0}, INIT=0, S={5:0}, X=65, \old(INIT)=0, \old(P)=63, \old(X)=0, \old(cond)=0, cond=0] [L14] reach_error() VAL [E={4:0}, INIT=0, S={5:0}, X=65, \old(INIT)=0, \old(P)=63, \old(X)=0, \old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 27 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 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 [2023-04-01 10:47:27,301 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...