/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_0480.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:47:36,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:47:36,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:47:36,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:47:36,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:47:36,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:47:36,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:47:36,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:47:36,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:47:36,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:47:36,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:47:36,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:47:36,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:47:36,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:47:36,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:47:36,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:47:36,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:47:36,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:47:36,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:47:36,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:47:36,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:47:36,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:47:36,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:47:36,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:47:36,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:47:36,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:47:36,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:47:36,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:47:36,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:47:36,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:47:36,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:47:36,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:47:36,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:47:36,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:47:36,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:47:36,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:47:36,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:47:36,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:47:36,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:47:36,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:47:36,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:47:36,586 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 04:47:36,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:47:36,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:47:36,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:47:36,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:47:36,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:47:36,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:47:36,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:47:36,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:47:36,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:47:36,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:47:36,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:47:36,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:47:36,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:47:36,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:47:36,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:47:36,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:47:36,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:47:36,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:47:36,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:47:36,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:47:36,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:47:36,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:36,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:47:36,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:47:36,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:47:36,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:47:36,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:47:36,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:47:36,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:47:36,646 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 04:47:36,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:47:36,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:47:36,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:47:36,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:47:36,994 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:47:36,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0480.c [2020-10-14 04:47:37,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/497fcff62/8f3c22b7c5864a8488ca3da973bf7273/FLAG507002bf6 [2020-10-14 04:47:37,552 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:47:37,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0480.c [2020-10-14 04:47:37,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/497fcff62/8f3c22b7c5864a8488ca3da973bf7273/FLAG507002bf6 [2020-10-14 04:47:37,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/497fcff62/8f3c22b7c5864a8488ca3da973bf7273 [2020-10-14 04:47:37,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:47:37,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:47:37,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:37,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:47:37,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:47:37,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:37" (1/1) ... [2020-10-14 04:47:37,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df7be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:37, skipping insertion in model container [2020-10-14 04:47:37,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:37" (1/1) ... [2020-10-14 04:47:37,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:47:37,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:47:38,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:38,245 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:47:38,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:38,411 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:47:38,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38 WrapperNode [2020-10-14 04:47:38,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:38,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:47:38,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:47:38,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:47:38,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (1/1) ... [2020-10-14 04:47:38,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (1/1) ... [2020-10-14 04:47:38,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (1/1) ... [2020-10-14 04:47:38,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (1/1) ... [2020-10-14 04:47:38,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (1/1) ... [2020-10-14 04:47:38,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (1/1) ... [2020-10-14 04:47:38,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (1/1) ... [2020-10-14 04:47:38,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:47:38,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:47:38,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:47:38,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:47:38,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (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 04:47:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:47:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:47:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-14 04:47:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_acosf [2020-10-14 04:47:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-14 04:47:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:47:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:47:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:47:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-14 04:47:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:47:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:47:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:47:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:47:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:47:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:47:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_acosf [2020-10-14 04:47:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-14 04:47:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:47:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:47:38,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:47:39,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:47:39,019 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 04:47:39,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:39 BoogieIcfgContainer [2020-10-14 04:47:39,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:47:39,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:47:39,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:47:39,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:47:39,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:37" (1/3) ... [2020-10-14 04:47:39,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f63fcf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:39, skipping insertion in model container [2020-10-14 04:47:39,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:38" (2/3) ... [2020-10-14 04:47:39,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f63fcf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:39, skipping insertion in model container [2020-10-14 04:47:39,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:39" (3/3) ... [2020-10-14 04:47:39,033 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2020-10-14 04:47:39,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:47:39,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:47:39,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:47:39,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:47:39,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:47:39,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:47:39,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:47:39,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:47:39,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:47:39,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:47:39,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:47:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-10-14 04:47:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:47:39,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:39,130 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 04:47:39,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:39,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:39,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1949307885, now seen corresponding path program 1 times [2020-10-14 04:47:39,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:39,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032895776] [2020-10-14 04:47:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:39,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:39,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:47:39,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 04:47:39,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:39,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:47:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:47:39,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:39,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:39,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:39,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 04:47:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:39,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:39,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:47:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:39,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:39,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:47:39,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:47:39,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:39,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:47:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:39,704 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 04:47:39,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032895776] [2020-10-14 04:47:39,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:39,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:47:39,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964573434] [2020-10-14 04:47:39,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:47:39,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:39,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:47:39,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:47:39,734 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2020-10-14 04:47:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:40,207 INFO L93 Difference]: Finished difference Result 134 states and 203 transitions. [2020-10-14 04:47:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:47:40,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 04:47:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:40,220 INFO L225 Difference]: With dead ends: 134 [2020-10-14 04:47:40,220 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 04:47:40,224 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 04:47:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 04:47:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-14 04:47:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 04:47:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-14 04:47:40,277 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 18 [2020-10-14 04:47:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:40,277 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-14 04:47:40,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:47:40,278 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-14 04:47:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 04:47:40,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:40,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:47:40,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:47:40,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:40,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1944395098, now seen corresponding path program 1 times [2020-10-14 04:47:40,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:40,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686046447] [2020-10-14 04:47:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:47:40,343 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:47:40,343 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:47:40,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:47:40,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:47:40 BoogieIcfgContainer [2020-10-14 04:47:40,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:47:40,392 INFO L168 Benchmark]: Toolchain (without parser) took 2469.86 ms. Allocated memory was 148.4 MB in the beginning and 233.8 MB in the end (delta: 85.5 MB). Free memory was 104.5 MB in the beginning and 151.3 MB in the end (delta: -46.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:40,394 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 04:47:40,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.46 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 104.5 MB in the beginning and 180.5 MB in the end (delta: -76.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:40,397 INFO L168 Benchmark]: Boogie Preprocessor took 71.49 ms. Allocated memory is still 205.0 MB. Free memory was 180.5 MB in the beginning and 177.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:40,398 INFO L168 Benchmark]: RCFGBuilder took 539.69 ms. Allocated memory is still 205.0 MB. Free memory was 177.7 MB in the beginning and 146.9 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:40,401 INFO L168 Benchmark]: TraceAbstraction took 1362.27 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 146.0 MB in the beginning and 151.3 MB in the end (delta: -5.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:40,413 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 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 491.46 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 104.5 MB in the beginning and 180.5 MB in the end (delta: -76.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.49 ms. Allocated memory is still 205.0 MB. Free memory was 180.5 MB in the beginning and 177.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 539.69 ms. Allocated memory is still 205.0 MB. Free memory was 177.7 MB in the beginning and 146.9 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1362.27 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 146.0 MB in the beginning and 151.3 MB in the end (delta: -5.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 182]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 181, overapproximation of someUnaryDOUBLEoperation at line 84, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L81-L88] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; [L177] float x = 1.0f; [L178] CALL, EXPR __ieee754_acosf(x) [L91] float z, p, q, r, w, s, c, df; [L92] __int32_t hx, ix; [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (x) [L96] EXPR gf_u.word [L96] (hx) = gf_u.word [L98] ix = hx & 0x7fffffff [L99] COND TRUE ix == 0x3f800000 [L100] COND TRUE hx > 0 [L101] return 0.0; [L178] RET, EXPR __ieee754_acosf(x) [L178] float res = __ieee754_acosf(x); [L181] EXPR res == 0.0f && __signbit_float(res) == 0 [L181] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L182] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 71 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: 78 SDtfs, 72 SDslu, 5 SDs, 0 SdLazy, 90 SolverSat, 20 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=71occurred 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, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1462 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...