/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-benchs/mea8000.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:15:54,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:15:54,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:15:54,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-01 00:15:54,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-01 00:15:54,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-01 00:15:54,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-01 00:15:54,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-01 00:15:54,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-01 00:15:54,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-01 00:15:54,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-01 00:15:54,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-01 00:15:54,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:15:54,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:15:54,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:15:54,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:15:54,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:15:54,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:15:54,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:15:54,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:15:54,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:15:54,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:15:54,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:15:54,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:15:54,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:15:54,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:15:54,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:15:54,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:15:54,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:15:54,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:15:54,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:15:54,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:15:54,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:15:54,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:15:54,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:15:54,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:15:54,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:15:54,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:15:54,567 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:15:54,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:15:54,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:15:54,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:15:54,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:15:54,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:15:54,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:15:54,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:15:54,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:15:54,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:15:54,569 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:15:54,569 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:15:54,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:15:54,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:15:54,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:15:54,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:15:54,809 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:15:54,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/mea8000.c [2022-02-01 00:15:54,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c79150f/a454772f19704e338222eaca1dc1a9d5/FLAGa30b1e1d3 [2022-02-01 00:15:55,369 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:15:55,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/mea8000.c [2022-02-01 00:15:55,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c79150f/a454772f19704e338222eaca1dc1a9d5/FLAGa30b1e1d3 [2022-02-01 00:15:55,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c79150f/a454772f19704e338222eaca1dc1a9d5 [2022-02-01 00:15:55,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:15:55,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:15:55,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:15:55,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:15:55,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:15:55,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:15:55" (1/1) ... [2022-02-01 00:15:55,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f48772a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:55, skipping insertion in model container [2022-02-01 00:15:55,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:15:55" (1/1) ... [2022-02-01 00:15:55,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:15:55,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:15:56,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/mea8000.c[649,662] [2022-02-01 00:15:56,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:15:56,157 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:15:56,170 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/mea8000.c[649,662] [2022-02-01 00:15:56,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:15:56,266 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:15:56,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56 WrapperNode [2022-02-01 00:15:56,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:15:56,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:15:56,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:15:56,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:15:56,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (1/1) ... [2022-02-01 00:15:56,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (1/1) ... [2022-02-01 00:15:56,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (1/1) ... [2022-02-01 00:15:56,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (1/1) ... [2022-02-01 00:15:56,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (1/1) ... [2022-02-01 00:15:56,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (1/1) ... [2022-02-01 00:15:56,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (1/1) ... [2022-02-01 00:15:56,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:15:56,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:15:56,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:15:56,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:15:56,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (1/1) ... [2022-02-01 00:15:56,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:15:56,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:15:56,413 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) [2022-02-01 00:15:56,432 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 [2022-02-01 00:15:56,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:15:56,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:15:56,451 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:15:56,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-01 00:15:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-01 00:15:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure cos [2022-02-01 00:15:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure exp [2022-02-01 00:15:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rand [2022-02-01 00:15:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure write_signed16 [2022-02-01 00:15:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure device_start [2022-02-01 00:15:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure device_reset [2022-02-01 00:15:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure accept_byte [2022-02-01 00:15:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure update_req [2022-02-01 00:15:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tables [2022-02-01 00:15:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure interp [2022-02-01 00:15:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure filter_step [2022-02-01 00:15:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure noise_gen [2022-02-01 00:15:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_gen [2022-02-01 00:15:56,453 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_sample [2022-02-01 00:15:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure shift_frame [2022-02-01 00:15:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_frame [2022-02-01 00:15:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure start_frame [2022-02-01 00:15:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_frame [2022-02-01 00:15:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_expire [2022-02-01 00:15:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2022-02-01 00:15:56,454 INFO L138 BoogieDeclarations]: Found implementation of procedure write [2022-02-01 00:15:56,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:15:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:15:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:15:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:15:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:15:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-01 00:15:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_char [2022-02-01 00:15:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure cos [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure exp [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure write_signed16 [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure device_start [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure device_reset [2022-02-01 00:15:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure accept_byte [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure update_req [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure init_tables [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure interp [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure filter_step [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure noise_gen [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure freq_gen [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure compute_sample [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure shift_frame [2022-02-01 00:15:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure decode_frame [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure start_frame [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure stop_frame [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure timer_expire [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure read [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure write [2022-02-01 00:15:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:15:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:15:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:15:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:15:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:15:56,634 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:15:56,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:15:57,187 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:15:57,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:15:57,202 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-02-01 00:15:57,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:15:57 BoogieIcfgContainer [2022-02-01 00:15:57,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:15:57,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:15:57,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:15:57,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:15:57,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:15:55" (1/3) ... [2022-02-01 00:15:57,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ed3e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:15:57, skipping insertion in model container [2022-02-01 00:15:57,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:56" (2/3) ... [2022-02-01 00:15:57,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ed3e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:15:57, skipping insertion in model container [2022-02-01 00:15:57,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:15:57" (3/3) ... [2022-02-01 00:15:57,215 INFO L111 eAbstractionObserver]: Analyzing ICFG mea8000.c [2022-02-01 00:15:57,219 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:15:57,220 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:15:57,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:15:57,267 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=QVASR [2022-02-01 00:15:57,268 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:15:57,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 122 states have (on average 1.3278688524590163) internal successors, (162), 135 states have internal predecessors, (162), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 40 states have call predecessors, (45), 45 states have call successors, (45) [2022-02-01 00:15:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-01 00:15:57,300 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:15:57,301 INFO L514 BasicCegarLoop]: 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] [2022-02-01 00:15:57,301 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:15:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:15:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash 973518861, now seen corresponding path program 1 times [2022-02-01 00:15:57,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:15:57,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142636083] [2022-02-01 00:15:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:15:57,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:15:57,367 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:15:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:15:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-01 00:15:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:15:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:15:57,833 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:15:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142636083] [2022-02-01 00:15:57,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [142636083] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:15:57,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:15:57,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:15:57,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962368354] [2022-02-01 00:15:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:15:57,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:15:57,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:15:57,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:15:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:15:57,871 INFO L87 Difference]: Start difference. First operand has 194 states, 122 states have (on average 1.3278688524590163) internal successors, (162), 135 states have internal predecessors, (162), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 40 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:15:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:15:59,256 INFO L93 Difference]: Finished difference Result 457 states and 678 transitions. [2022-02-01 00:15:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-01 00:15:59,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-02-01 00:15:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:15:59,269 INFO L225 Difference]: With dead ends: 457 [2022-02-01 00:15:59,270 INFO L226 Difference]: Without dead ends: 271 [2022-02-01 00:15:59,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:15:59,277 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 141 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:15:59,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 228 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-01 00:15:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-02-01 00:15:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 189. [2022-02-01 00:15:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 131 states have internal predecessors, (150), 45 states have call successors, (45), 25 states have call predecessors, (45), 24 states have return successors, (44), 39 states have call predecessors, (44), 44 states have call successors, (44) [2022-02-01 00:15:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 239 transitions. [2022-02-01 00:15:59,364 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 239 transitions. Word has length 29 [2022-02-01 00:15:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:15:59,365 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 239 transitions. [2022-02-01 00:15:59,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:15:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 239 transitions. [2022-02-01 00:15:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-01 00:15:59,367 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:15:59,368 INFO L514 BasicCegarLoop]: 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] [2022-02-01 00:15:59,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:15:59,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:15:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:15:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash 898115577, now seen corresponding path program 1 times [2022-02-01 00:15:59,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:15:59,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57637431] [2022-02-01 00:15:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:15:59,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:15:59,373 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:15:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:15:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-01 00:15:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:15:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:15:59,636 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:15:59,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57637431] [2022-02-01 00:15:59,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [57637431] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:15:59,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:15:59,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-01 00:15:59,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902636263] [2022-02-01 00:15:59,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:15:59,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-01 00:15:59,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:15:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-01 00:15:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:15:59,643 INFO L87 Difference]: Start difference. First operand 189 states and 239 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:16:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:16:00,881 INFO L93 Difference]: Finished difference Result 415 states and 541 transitions. [2022-02-01 00:16:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-01 00:16:00,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-02-01 00:16:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:16:00,885 INFO L225 Difference]: With dead ends: 415 [2022-02-01 00:16:00,885 INFO L226 Difference]: Without dead ends: 242 [2022-02-01 00:16:00,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-01 00:16:00,887 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 110 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:16:00,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 279 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-01 00:16:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-02-01 00:16:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 190. [2022-02-01 00:16:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 120 states have (on average 1.2583333333333333) internal successors, (151), 132 states have internal predecessors, (151), 45 states have call successors, (45), 25 states have call predecessors, (45), 24 states have return successors, (44), 39 states have call predecessors, (44), 44 states have call successors, (44) [2022-02-01 00:16:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 240 transitions. [2022-02-01 00:16:00,926 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 240 transitions. Word has length 29 [2022-02-01 00:16:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:16:00,926 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 240 transitions. [2022-02-01 00:16:00,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-01 00:16:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 240 transitions. [2022-02-01 00:16:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-01 00:16:00,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:16:00,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:16:00,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:16:00,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:16:00,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:16:00,930 INFO L85 PathProgramCache]: Analyzing trace with hash 376142972, now seen corresponding path program 1 times [2022-02-01 00:16:00,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:16:00,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968839879] [2022-02-01 00:16:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:16:00,951 INFO L92 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Could not compute Simultaneous Update! [2022-02-01 00:16:00,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:16:00,954 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:16:01,011 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-02-01 00:16:01,011 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-01 00:16:01,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:16:01,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-01 00:16:01,023 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-01 00:16:01,025 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:16:01,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:16:01 BoogieIcfgContainer [2022-02-01 00:16:01,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:16:01,051 INFO L158 Benchmark]: Toolchain (without parser) took 5326.28ms. Allocated memory was 176.2MB in the beginning and 234.9MB in the end (delta: 58.7MB). Free memory was 120.1MB in the beginning and 195.1MB in the end (delta: -75.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:16:01,051 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:16:01,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.66ms. Allocated memory was 176.2MB in the beginning and 234.9MB in the end (delta: 58.7MB). Free memory was 120.0MB in the beginning and 199.7MB in the end (delta: -79.7MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-02-01 00:16:01,056 INFO L158 Benchmark]: Boogie Preprocessor took 91.81ms. Allocated memory is still 234.9MB. Free memory was 199.7MB in the beginning and 196.1MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:16:01,056 INFO L158 Benchmark]: RCFGBuilder took 843.89ms. Allocated memory is still 234.9MB. Free memory was 196.1MB in the beginning and 154.6MB in the end (delta: 41.4MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2022-02-01 00:16:01,056 INFO L158 Benchmark]: TraceAbstraction took 3844.16ms. Allocated memory is still 234.9MB. Free memory was 154.1MB in the beginning and 195.1MB in the end (delta: -41.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:16:01,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 538.66ms. Allocated memory was 176.2MB in the beginning and 234.9MB in the end (delta: 58.7MB). Free memory was 120.0MB in the beginning and 199.7MB in the end (delta: -79.7MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 91.81ms. Allocated memory is still 234.9MB. Free memory was 199.7MB in the beginning and 196.1MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 843.89ms. Allocated memory is still 234.9MB. Free memory was 196.1MB in the beginning and 154.6MB in the end (delta: 41.4MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 3844.16ms. Allocated memory is still 234.9MB. Free memory was 154.1MB in the beginning and 195.1MB in the end (delta: -41.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of to_int at line 245, overapproximation of someBinaryDOUBLEComparisonOperation at line 35, overapproximation of someBinaryArithmeticDOUBLEoperation at line 245. Possible FailurePath: [L19] const double M_PI = 3.141592653589793238; [L103] enum mea8000_state m_state; [L105] UINT8 m_buf[4]; [L106] UINT8 m_bufpos; [L108] UINT8 m_cont; [L109] UINT8 m_roe; [L111] UINT16 m_framelength; [L112] UINT16 m_framepos; [L113] UINT16 m_framelog; [L115] INT16 m_lastsample, m_sample; [L117] UINT32 m_phi; [L119] struct filter_t m_f[4]; [L121] UINT16 m_last_ampl, m_ampl; [L122] UINT16 m_last_pitch, m_pitch; [L123] UINT8 m_noise; [L125] int m_cos_table[/*TABLE_LEN*/3600]; [L126] int m_exp_table[/*TABLE_LEN*/3600]; [L127] int m_exp2_table[/*TABLE_LEN*/3600]; [L128] int m_noise_table[/*NOISE_LEN*/8192]; [L130] int timer_enabled = 0; [L140-L146] static const int fm1_table[32] = { 150, 162, 174, 188, 202, 217, 233, 250, 267, 286, 305, 325, 346, 368, 391, 415, 440, 466, 494, 523, 554, 587, 622, 659, 698, 740, 784, 830, 880, 932, 988, 1047 }; [L148-L154] static const int fm2_table[32] = { 440, 466, 494, 523, 554, 587, 622, 659, 698, 740, 784, 830, 880, 932, 988, 1047, 1100, 1179, 1254, 1337, 1428, 1528, 1639, 1761, 1897, 2047, 2214, 2400, 2609, 2842, 3105, 3400 }; [L156-L159] static const int fm3_table[8] = { 1179, 1337, 1528, 1761, 2047, 2400, 2842, 3400 }; [L161] static const int fm4_table[1] = { 3500 }; [L166] static const int bw_table[4] = { 726, 309, 125, 50 }; [L171-L175] static const int ampl_table[16] = { 0, 8, 11, 16, 22, 31, 44, 62, 88, 125, 177, 250, 354, 500, 707, 1000 }; [L180-L186] static const int pi_table[32] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0 /* noise */, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1 }; [L516] CALL device_start() [L196] CALL init_tables() [L240] int i = 0; [L240] COND TRUE i < /*TABLE_LEN*/3600 [L242] double f = (double)i / /*F0*/8096; [L243] CALL, EXPR cos(2. * M_PI * f) [L23] double x = __VERIFIER_nondet_double(); [L25] CALL assume_abort_if_not(x >= -1.1 && x <= 1.1) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(x >= -1.1 && x <= 1.1) [L27] return x; [L243] RET, EXPR cos(2. * M_PI * f) [L243] m_cos_table[i] = 2. * cos(2. * M_PI * f) * /*QUANT*/512 [L244] CALL, EXPR exp(-M_PI * f) [L32] double x = __VERIFIER_nondet_double(); [L34] CALL assume_abort_if_not(x >= 0.) [L13] COND FALSE !(!cond) [L34] RET assume_abort_if_not(x >= 0.) [L35] COND FALSE !(a <= 0.) [L39] return x; [L244] RET, EXPR exp(-M_PI * f) [L244] m_exp_table[i] = exp(-M_PI * f) * /*QUANT*/512 [L245] CALL, EXPR exp(-2 * M_PI * f) [L32] double x = __VERIFIER_nondet_double(); [L34] CALL assume_abort_if_not(x >= 0.) [L13] COND FALSE !(!cond) [L34] RET assume_abort_if_not(x >= 0.) [L35] COND FALSE !(a <= 0.) [L39] return x; [L245] RET, EXPR exp(-2 * M_PI * f) [L245] m_exp2_table[i] = exp(-2 * M_PI * f) * /*QUANT*/512 [L240] i++ [L240] COND FALSE !(i < /*TABLE_LEN*/3600) [L247] int i = 0; [L247] COND FALSE !(i < /*NOISE_LEN*/8192) [L196] RET init_tables() [L516] RET device_start() [L517] COND TRUE 1 [L519] case 0: [L520] case 1: [L521] case 2: [L521] COND TRUE \read(timer_enabled) [L521] CALL timer_expire() [L383] int pos = m_framepos % /*SUPERSAMPLING*/8; [L385] COND FALSE !(!pos) [L395] int sample = m_lastsample + ((pos * (m_sample-m_lastsample)) / /*SUPERSAMPLING*/8); [L396] CALL write_signed16(0x8000 + sample) [L50] CALL __VERIFIER_assert(val >= 0 && val <= 65535) [L15] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 197 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 307 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 251 mSDsluCounter, 507 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 102 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 788 IncrementalHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 405 mSDtfsCounter, 788 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 134 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 [2022-02-01 00:16:01,091 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...