/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=BIGGEST --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_0270b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:32:07,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:32:07,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:32:07,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:32:07,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:32:07,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:32:07,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:32:07,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:32:07,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:32:07,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:32:07,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:32:07,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:32:07,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:32:07,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:32:07,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:32:07,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:32:07,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:32:07,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:32:07,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:32:07,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:32:07,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:32:07,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:32:07,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:32:07,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:32:07,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:32:07,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:32:07,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:32:07,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:32:07,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:32:07,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:32:07,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:32:07,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:32:07,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:32:07,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:32:07,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:32:07,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:32:07,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:32:07,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:32:07,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:32:07,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:32:07,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:32:07,595 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 [2020-10-12 15:32:07,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:32:07,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:32:07,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:32:07,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:32:07,618 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:32:07,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:32:07,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:32:07,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:32:07,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:32:07,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:32:07,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:32:07,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:32:07,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:32:07,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:32:07,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:32:07,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:32:07,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:32:07,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:32:07,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:32:07,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:32:07,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:32:07,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:32:07,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:32:07,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:32:07,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:32:07,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:32:07,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:32:07,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:32:07,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:32:07,623 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:32:07,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:32:07,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:32:07,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:32:07,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:32:07,967 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:32:07,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270b.c [2020-10-12 15:32:08,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/809b71221/c07c3dfd2b8f4ad2874e6c5074ab32e4/FLAG93a973b03 [2020-10-12 15:32:08,471 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:32:08,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0270b.c [2020-10-12 15:32:08,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/809b71221/c07c3dfd2b8f4ad2874e6c5074ab32e4/FLAG93a973b03 [2020-10-12 15:32:08,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/809b71221/c07c3dfd2b8f4ad2874e6c5074ab32e4 [2020-10-12 15:32:08,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:32:08,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:32:08,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:32:08,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:32:08,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:32:08,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:32:08" (1/1) ... [2020-10-12 15:32:08,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176fd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:08, skipping insertion in model container [2020-10-12 15:32:08,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:32:08" (1/1) ... [2020-10-12 15:32:08,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:32:08,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:32:09,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:32:09,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:32:09,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:32:09,325 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:32:09,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09 WrapperNode [2020-10-12 15:32:09,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:32:09,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:32:09,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:32:09,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:32:09,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (1/1) ... [2020-10-12 15:32:09,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (1/1) ... [2020-10-12 15:32:09,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (1/1) ... [2020-10-12 15:32:09,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (1/1) ... [2020-10-12 15:32:09,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (1/1) ... [2020-10-12 15:32:09,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (1/1) ... [2020-10-12 15:32:09,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (1/1) ... [2020-10-12 15:32:09,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:32:09,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:32:09,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:32:09,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:32:09,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (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 [2020-10-12 15:32:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:32:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:32:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-12 15:32:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-12 15:32:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-12 15:32:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-12 15:32:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:32:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:32:09,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-12 15:32:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-12 15:32:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:32:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:32:09,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:32:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:32:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-12 15:32:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:32:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:32:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-12 15:32:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-12 15:32:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:32:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:32:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:32:10,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:32:10,013 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-12 15:32:10,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:32:10 BoogieIcfgContainer [2020-10-12 15:32:10,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:32:10,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:32:10,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:32:10,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:32:10,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:32:08" (1/3) ... [2020-10-12 15:32:10,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba89bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:32:10, skipping insertion in model container [2020-10-12 15:32:10,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:32:09" (2/3) ... [2020-10-12 15:32:10,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba89bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:32:10, skipping insertion in model container [2020-10-12 15:32:10,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:32:10" (3/3) ... [2020-10-12 15:32:10,035 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270b.c [2020-10-12 15:32:10,046 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:32:10,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:32:10,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:32:10,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:32:10,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:32:10,089 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:32:10,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:32:10,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:32:10,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:32:10,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:32:10,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:32:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-12 15:32:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 15:32:10,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:32:10,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:32:10,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:32:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:32:10,122 INFO L82 PathProgramCache]: Analyzing trace with hash -874682043, now seen corresponding path program 1 times [2020-10-12 15:32:10,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:32:10,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662273976] [2020-10-12 15:32:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:32:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:10,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:32:10,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:32:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 15:32:10,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:32:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:10,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:32:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:32:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:10,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:10,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:32:10,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:32:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:32:10,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:32:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:10,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:32:10,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:32:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:32:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:32:10,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:32:10,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 15:32:10,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:32:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:32:10,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:32:10,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:32:10,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:32:10,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:32:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:32:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:32:10,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662273976] [2020-10-12 15:32:10,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:32:10,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:32:10,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709165122] [2020-10-12 15:32:10,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:32:10,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:32:10,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:32:10,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:32:10,675 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-10-12 15:32:11,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:32:11,145 INFO L93 Difference]: Finished difference Result 152 states and 229 transitions. [2020-10-12 15:32:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:32:11,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-12 15:32:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:32:11,159 INFO L225 Difference]: With dead ends: 152 [2020-10-12 15:32:11,160 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 15:32:11,164 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 [2020-10-12 15:32:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 15:32:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-12 15:32:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 15:32:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2020-10-12 15:32:11,219 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 17 [2020-10-12 15:32:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:32:11,219 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2020-10-12 15:32:11,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:32:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2020-10-12 15:32:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 15:32:11,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:32:11,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:32:11,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:32:11,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:32:11,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:32:11,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1166852346, now seen corresponding path program 1 times [2020-10-12 15:32:11,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:32:11,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389378955] [2020-10-12 15:32:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:32:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:32:11,283 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:32:11,283 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:32:11,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:32:11,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:32:11 BoogieIcfgContainer [2020-10-12 15:32:11,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:32:11,327 INFO L168 Benchmark]: Toolchain (without parser) took 2438.24 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 102.0 MB in the beginning and 149.2 MB in the end (delta: -47.3 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:11,328 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:32:11,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.67 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 176.9 MB in the end (delta: -75.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:11,333 INFO L168 Benchmark]: Boogie Preprocessor took 83.90 ms. Allocated memory is still 201.9 MB. Free memory was 176.9 MB in the beginning and 174.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:11,334 INFO L168 Benchmark]: RCFGBuilder took 608.72 ms. Allocated memory is still 201.9 MB. Free memory was 174.2 MB in the beginning and 140.0 MB in the end (delta: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:11,335 INFO L168 Benchmark]: TraceAbstraction took 1301.43 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 140.0 MB in the beginning and 149.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:32:11,339 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 436.67 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 176.9 MB in the end (delta: -75.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.90 ms. Allocated memory is still 201.9 MB. Free memory was 176.9 MB in the beginning and 174.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 608.72 ms. Allocated memory is still 201.9 MB. Free memory was 174.2 MB in the beginning and 140.0 MB in the end (delta: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1301.43 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 140.0 MB in the beginning and 149.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 198]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 197, overapproximation of someUnaryDOUBLEoperation at line 111, overapproximation of bitwiseAnd at line 125, overapproximation of someUnaryFLOAToperation at line 109, overapproximation of someBinaryArithmeticFLOAToperation at line 128. Possible FailurePath: [L24] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L107-L115] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L193] float x = 0.0f; [L194] CALL, EXPR __ieee754_asinf(x) [L118] float t, w, p, q, c, r, s; [L119] __int32_t hx, ix; [L121] ieee_float_shape_type gf_u; [L122] gf_u.value = (x) [L123] EXPR gf_u.word [L123] (hx) = gf_u.word [L125] ix = hx & 0x7fffffff [L126] COND TRUE ix == 0x3f800000 [L128] return x * pio2_hi_asin + x * pio2_lo_asin; [L194] RET, EXPR __ieee754_asinf(x) [L194] float res = __ieee754_asinf(x); [L197] EXPR res == 0.0f && __signbit_float(res) == 0 [L197] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L198] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 80 SDslu, 5 SDs, 0 SdLazy, 100 SolverSat, 22 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=80occurred 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, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 1408 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...