/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-benchs/mea8000.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:24:00,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:24:00,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:24:01,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:24:01,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:24:01,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:24:01,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:24:01,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:24:01,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:24:01,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:24:01,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:24:01,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:24:01,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:24:01,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:24:01,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:24:01,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:24:01,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:24:01,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:24:01,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:24:01,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:24:01,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:24:01,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:24:01,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:24:01,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:24:01,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:24:01,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:24:01,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:24:01,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:24:01,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:24:01,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:24:01,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:24:01,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:24:01,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:24:01,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:24:01,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:24:01,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:24:01,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:24:01,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:24:01,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:24:01,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:24:01,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:24:01,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:24:01,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:24:01,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:24:01,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:24:01,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:24:01,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:24:01,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:24:01,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:24:01,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:24:01,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:24:01,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:24:01,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:24:01,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:24:01,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:24:01,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:24:01,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:24:01,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:24:01,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:24:01,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:24:01,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:24:01,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:24:01,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:24:01,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:24:01,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:24:01,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:24:01,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:24:01,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:24:01,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:24:01,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:24:01,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:24:01,183 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:24:01,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:24:01,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:24:01,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:24:01,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:24:01,683 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:24:01,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/mea8000.c [2020-10-28 14:24:01,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074ec1ede/e668579384af4ac69714d720b782ae12/FLAG74ebf1ff3 [2020-10-28 14:24:02,519 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:24:02,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/mea8000.c [2020-10-28 14:24:02,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074ec1ede/e668579384af4ac69714d720b782ae12/FLAG74ebf1ff3 [2020-10-28 14:24:02,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074ec1ede/e668579384af4ac69714d720b782ae12 [2020-10-28 14:24:02,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:24:02,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:24:02,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:24:02,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:24:02,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:24:02,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:24:02" (1/1) ... [2020-10-28 14:24:02,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f01c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:02, skipping insertion in model container [2020-10-28 14:24:02,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:24:02" (1/1) ... [2020-10-28 14:24:02,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:24:02,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:24:03,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:24:03,167 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:24:03,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:24:03,364 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:24:03,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03 WrapperNode [2020-10-28 14:24:03,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:24:03,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:24:03,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:24:03,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:24:03,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (1/1) ... [2020-10-28 14:24:03,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (1/1) ... [2020-10-28 14:24:03,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (1/1) ... [2020-10-28 14:24:03,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (1/1) ... [2020-10-28 14:24:03,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (1/1) ... [2020-10-28 14:24:03,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (1/1) ... [2020-10-28 14:24:03,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (1/1) ... [2020-10-28 14:24:03,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:24:03,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:24:03,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:24:03,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:24:03,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:24:03,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:24:03,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:24:03,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:24:03,596 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 14:24:03,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 14:24:03,597 INFO L138 BoogieDeclarations]: Found implementation of procedure cos [2020-10-28 14:24:03,597 INFO L138 BoogieDeclarations]: Found implementation of procedure exp [2020-10-28 14:24:03,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rand [2020-10-28 14:24:03,597 INFO L138 BoogieDeclarations]: Found implementation of procedure write_signed16 [2020-10-28 14:24:03,598 INFO L138 BoogieDeclarations]: Found implementation of procedure device_start [2020-10-28 14:24:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure device_reset [2020-10-28 14:24:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure accept_byte [2020-10-28 14:24:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure update_req [2020-10-28 14:24:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tables [2020-10-28 14:24:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure interp [2020-10-28 14:24:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure filter_step [2020-10-28 14:24:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure noise_gen [2020-10-28 14:24:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_gen [2020-10-28 14:24:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_sample [2020-10-28 14:24:03,602 INFO L138 BoogieDeclarations]: Found implementation of procedure shift_frame [2020-10-28 14:24:03,602 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_frame [2020-10-28 14:24:03,602 INFO L138 BoogieDeclarations]: Found implementation of procedure start_frame [2020-10-28 14:24:03,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_frame [2020-10-28 14:24:03,602 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_expire [2020-10-28 14:24:03,603 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-28 14:24:03,603 INFO L138 BoogieDeclarations]: Found implementation of procedure write [2020-10-28 14:24:03,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:24:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:24:03,603 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:24:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:24:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:24:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:24:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_char [2020-10-28 14:24:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:24:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 14:24:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 14:24:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure cos [2020-10-28 14:24:03,605 INFO L130 BoogieDeclarations]: Found specification of procedure exp [2020-10-28 14:24:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:24:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure write_signed16 [2020-10-28 14:24:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure device_start [2020-10-28 14:24:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure device_reset [2020-10-28 14:24:03,606 INFO L130 BoogieDeclarations]: Found specification of procedure accept_byte [2020-10-28 14:24:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure update_req [2020-10-28 14:24:03,607 INFO L130 BoogieDeclarations]: Found specification of procedure init_tables [2020-10-28 14:24:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure interp [2020-10-28 14:24:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure filter_step [2020-10-28 14:24:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure noise_gen [2020-10-28 14:24:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure freq_gen [2020-10-28 14:24:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure compute_sample [2020-10-28 14:24:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure shift_frame [2020-10-28 14:24:03,631 INFO L130 BoogieDeclarations]: Found specification of procedure decode_frame [2020-10-28 14:24:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure start_frame [2020-10-28 14:24:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure stop_frame [2020-10-28 14:24:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:24:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:24:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:24:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:24:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure timer_expire [2020-10-28 14:24:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 14:24:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 14:24:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:24:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:24:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:24:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:24:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:24:04,717 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:24:04,717 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 14:24:04,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:24:04 BoogieIcfgContainer [2020-10-28 14:24:04,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:24:04,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:24:04,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:24:04,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:24:04,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:24:02" (1/3) ... [2020-10-28 14:24:04,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9c18f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:24:04, skipping insertion in model container [2020-10-28 14:24:04,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:24:03" (2/3) ... [2020-10-28 14:24:04,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9c18f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:24:04, skipping insertion in model container [2020-10-28 14:24:04,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:24:04" (3/3) ... [2020-10-28 14:24:04,729 INFO L111 eAbstractionObserver]: Analyzing ICFG mea8000.c [2020-10-28 14:24:04,742 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:24:04,747 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:24:04,761 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:24:04,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:24:04,791 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:24:04,791 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:24:04,792 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:24:04,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:24:04,792 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:24:04,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:24:04,792 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:24:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-10-28 14:24:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 14:24:04,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:24:04,826 INFO L422 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, 1] [2020-10-28 14:24:04,826 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:24:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:24:04,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1414500176, now seen corresponding path program 1 times [2020-10-28 14:24:04,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:24:04,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888922688] [2020-10-28 14:24:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:24:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:24:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:24:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:24:05,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888922688] [2020-10-28 14:24:05,460 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-28 14:24:05,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:24:05,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-28 14:24:05,461 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-28 14:24:05,462 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:24:05,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:24:05,485 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 14:24:05,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:24:05 BoogieIcfgContainer [2020-10-28 14:24:05,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:24:05,488 INFO L168 Benchmark]: Toolchain (without parser) took 2712.86 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 125.1 MB in the beginning and 140.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:24:05,489 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:24:05,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.31 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 105.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:24:05,491 INFO L168 Benchmark]: Boogie Preprocessor took 117.18 ms. Allocated memory is still 151.0 MB. Free memory was 105.1 MB in the beginning and 101.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:24:05,492 INFO L168 Benchmark]: RCFGBuilder took 1232.26 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 66.7 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:24:05,493 INFO L168 Benchmark]: TraceAbstraction took 763.71 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 66.2 MB in the beginning and 140.0 MB in the end (delta: -73.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:24:05,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 585.31 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 105.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 117.18 ms. Allocated memory is still 151.0 MB. Free memory was 105.1 MB in the beginning and 101.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1232.26 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 66.7 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 763.71 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 66.2 MB in the beginning and 140.0 MB in the end (delta: -73.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. 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; [L247] int i = 0; [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] CALL reach_error() [L3] __assert_fail("0", "mea8000.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...