/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.4 --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 -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:47:56,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:47:56,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:47:56,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:47:56,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:47:56,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:47:56,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:47:56,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:47:56,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:47:56,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:47:56,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:47:56,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:47:56,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:47:56,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:47:56,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:47:56,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:47:56,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:47:56,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:47:56,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:47:56,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:47:56,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:47:56,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:47:56,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:47:56,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:47:56,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:47:56,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:47:56,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:47:56,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:47:56,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:47:56,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:47:56,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:47:56,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:47:56,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:47:56,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:47:56,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:47:56,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:47:56,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:47:56,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:47:56,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:47:56,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:47:56,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:47:56,567 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 [2020-10-14 04:47:56,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:47:56,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:47:56,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:47:56,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:47:56,594 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:47:56,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:47:56,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:47:56,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:47:56,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:47:56,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:47:56,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:47:56,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:47:56,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:47:56,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:47:56,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:47:56,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:47:56,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:47:56,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:47:56,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:47:56,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:47:56,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:47:56,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:56,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:47:56,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:47:56,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:47:56,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:47:56,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:47:56,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:47:56,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:47:56,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:47:56,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:47:56,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:47:56,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:47:56,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:47:56,931 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:47:56,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680b.c [2020-10-14 04:47:56,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410a57abd/b90e4d6fefe64d7dbc2be5bda00f9e24/FLAG7ed819c6b [2020-10-14 04:47:57,497 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:47:57,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0680b.c [2020-10-14 04:47:57,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410a57abd/b90e4d6fefe64d7dbc2be5bda00f9e24/FLAG7ed819c6b [2020-10-14 04:47:57,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/410a57abd/b90e4d6fefe64d7dbc2be5bda00f9e24 [2020-10-14 04:47:57,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:47:57,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:47:57,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:57,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:47:57,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:47:57,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:57" (1/1) ... [2020-10-14 04:47:57,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8ae939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:57, skipping insertion in model container [2020-10-14 04:47:57,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:57" (1/1) ... [2020-10-14 04:47:57,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:47:57,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:47:58,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:58,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:47:58,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:58,311 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:47:58,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58 WrapperNode [2020-10-14 04:47:58,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:58,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:47:58,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:47:58,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:47:58,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (1/1) ... [2020-10-14 04:47:58,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:47:58,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:47:58,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:47:58,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:47:58,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (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 [2020-10-14 04:47:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:47:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:47:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-14 04:47:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-14 04:47:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2020-10-14 04:47:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:47:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:47:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:47:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-14 04:47:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:47:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:47:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:47:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:47:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:47:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:47:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-14 04:47:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2020-10-14 04:47:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:47:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:47:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:47:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:47:59,094 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:47:59,094 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 04:47:59,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:59 BoogieIcfgContainer [2020-10-14 04:47:59,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:47:59,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:47:59,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:47:59,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:47:59,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:57" (1/3) ... [2020-10-14 04:47:59,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f647a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:59, skipping insertion in model container [2020-10-14 04:47:59,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:58" (2/3) ... [2020-10-14 04:47:59,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f647a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:59, skipping insertion in model container [2020-10-14 04:47:59,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:59" (3/3) ... [2020-10-14 04:47:59,109 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680b.c [2020-10-14 04:47:59,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:47:59,127 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:47:59,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:47:59,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:47:59,163 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:47:59,163 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:47:59,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:47:59,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:47:59,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:47:59,164 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:47:59,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:47:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-14 04:47:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:47:59,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:59,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:47:59,193 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:59,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1988302874, now seen corresponding path program 1 times [2020-10-14 04:47:59,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:59,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090943838] [2020-10-14 04:47:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:47:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 04:47:59,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:59,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:59,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:47:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:47:59,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:59,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:59,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:59,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:47:59,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:59,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:59,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:59,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:47:59,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:59,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:47:59,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:59,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:59,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:47:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:59,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:47:59,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090943838] [2020-10-14 04:47:59,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:59,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:47:59,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138807620] [2020-10-14 04:47:59,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:47:59,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:59,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:47:59,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:47:59,892 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 4 states. [2020-10-14 04:48:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:00,311 INFO L93 Difference]: Finished difference Result 190 states and 302 transitions. [2020-10-14 04:48:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:48:00,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 04:48:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:00,326 INFO L225 Difference]: With dead ends: 190 [2020-10-14 04:48:00,326 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 04:48:00,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:48:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 04:48:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-14 04:48:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 04:48:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2020-10-14 04:48:00,394 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 18 [2020-10-14 04:48:00,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:00,395 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2020-10-14 04:48:00,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:48:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2020-10-14 04:48:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:48:00,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:00,397 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] [2020-10-14 04:48:00,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:48:00,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:00,398 INFO L82 PathProgramCache]: Analyzing trace with hash -796728189, now seen corresponding path program 1 times [2020-10-14 04:48:00,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:00,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032287571] [2020-10-14 04:48:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:48:00,454 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:48:00,454 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:48:00,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:48:00,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:48:00 BoogieIcfgContainer [2020-10-14 04:48:00,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:48:00,486 INFO L168 Benchmark]: Toolchain (without parser) took 2644.76 ms. Allocated memory was 146.3 MB in the beginning and 235.4 MB in the end (delta: 89.1 MB). Free memory was 102.6 MB in the beginning and 138.0 MB in the end (delta: -35.4 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,487 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.64 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 102.2 MB in the beginning and 176.2 MB in the end (delta: -74.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,489 INFO L168 Benchmark]: Boogie Preprocessor took 65.97 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 173.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,490 INFO L168 Benchmark]: RCFGBuilder took 721.21 ms. Allocated memory is still 201.9 MB. Free memory was 173.2 MB in the beginning and 133.2 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,491 INFO L168 Benchmark]: TraceAbstraction took 1381.41 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 133.2 MB in the beginning and 138.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:00,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 470.64 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 102.2 MB in the beginning and 176.2 MB in the end (delta: -74.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.97 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 173.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 721.21 ms. Allocated memory is still 201.9 MB. Free memory was 173.2 MB in the beginning and 133.2 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1381.41 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 133.2 MB in the beginning and 138.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 228]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 227, overapproximation of someUnaryDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 133, overapproximation of someUnaryFLOAToperation at line 221, overapproximation of someBinaryArithmeticFLOAToperation at line 135. Possible FailurePath: [L27-L32] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L34-L39] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L41-L45] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L47-L49] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L115-L116] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L221] float x = -0.0f; [L222] float y = -0.0f; [L224] CALL, EXPR __ieee754_atan2f(y, x) [L119] float z; [L120] __int32_t k, m, hx, hy, ix, iy; [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff [L129] ieee_float_shape_type gf_u; [L130] gf_u.value = (y) [L131] EXPR gf_u.word [L131] (hy) = gf_u.word [L133] iy = hy & 0x7fffffff [L134] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L135] return x + y; [L224] RET, EXPR __ieee754_atan2f(y, x) [L224] float res = __ieee754_atan2f(y, x); [L227] COND TRUE res != -pi [L228] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 8 SDslu, 125 SDs, 0 SdLazy, 133 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1411 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...