/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/double_req_bl_0685a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:46:28,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:46:28,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:46:28,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:46:28,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:46:28,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:46:28,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:46:28,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:46:28,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:46:28,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:46:28,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:46:28,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:46:28,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:46:28,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:46:28,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:46:28,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:46:28,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:46:28,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:46:28,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:46:28,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:46:28,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:46:28,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:46:28,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:46:28,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:46:28,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:46:28,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:46:28,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:46:28,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:46:28,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:46:28,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:46:28,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:46:28,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:46:28,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:46:28,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:46:28,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:46:28,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:46:28,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:46:28,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:46:28,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:46:28,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:46:28,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:46:28,826 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 04:46:28,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:46:28,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:46:28,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:46:28,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:46:28,850 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:46:28,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:46:28,850 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:46:28,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:46:28,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:46:28,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:46:28,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:46:28,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:46:28,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:46:28,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:46:28,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:46:28,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:46:28,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:46:28,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:46:28,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:46:28,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:46:28,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:46:28,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:28,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:46:28,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:46:28,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:46:28,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:46:28,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:46:28,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:46:28,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:46:28,855 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 04:46:29,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:46:29,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:46:29,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:46:29,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:46:29,164 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:46:29,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0685a.c [2020-10-14 04:46:29,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07d9063b5/0220ba55d2b04a39b8307f0e18088e57/FLAGcccce1c92 [2020-10-14 04:46:29,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:46:29,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0685a.c [2020-10-14 04:46:29,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07d9063b5/0220ba55d2b04a39b8307f0e18088e57/FLAGcccce1c92 [2020-10-14 04:46:30,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07d9063b5/0220ba55d2b04a39b8307f0e18088e57 [2020-10-14 04:46:30,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:46:30,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:46:30,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:30,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:46:30,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:46:30,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322abbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30, skipping insertion in model container [2020-10-14 04:46:30,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:46:30,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:46:30,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:30,584 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:46:30,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:30,674 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:46:30,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30 WrapperNode [2020-10-14 04:46:30,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:30,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:46:30,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:46:30,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:46:30,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (1/1) ... [2020-10-14 04:46:30,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:46:30,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:46:30,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:46:30,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:46:30,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (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 04:46:30,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:46:30,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:46:30,829 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 04:46:30,829 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 04:46:30,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 04:46:30,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:46:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:46:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:46:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 04:46:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:46:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:46:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:46:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:46:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:46:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:46:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 04:46:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 04:46:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:46:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:46:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:46:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:46:31,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:46:31,509 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 04:46:31,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:31 BoogieIcfgContainer [2020-10-14 04:46:31,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:46:31,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:46:31,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:46:31,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:46:31,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:46:30" (1/3) ... [2020-10-14 04:46:31,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7618db94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:31, skipping insertion in model container [2020-10-14 04:46:31,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:30" (2/3) ... [2020-10-14 04:46:31,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7618db94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:31, skipping insertion in model container [2020-10-14 04:46:31,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:31" (3/3) ... [2020-10-14 04:46:31,524 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0685a.c [2020-10-14 04:46:31,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:46:31,550 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:46:31,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:46:31,603 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:46:31,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:46:31,603 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:46:31,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:46:31,604 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:46:31,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:46:31,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:46:31,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:46:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-14 04:46:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:46:31,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:31,670 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 04:46:31,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:31,683 INFO L82 PathProgramCache]: Analyzing trace with hash 947216650, now seen corresponding path program 1 times [2020-10-14 04:46:31,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:31,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142099685] [2020-10-14 04:46:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:32,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:46:32,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-14 04:46:32,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:32,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:46:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:32,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 04:46:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:32,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:32,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:32,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:46:32,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:32,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:32,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:32,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:46:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:32,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:32,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:46:32,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:46:32,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:32,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:46:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:32,408 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 04:46:32,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142099685] [2020-10-14 04:46:32,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:32,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:46:32,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867031070] [2020-10-14 04:46:32,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:46:32,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:32,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:46:32,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:46:32,438 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-14 04:46:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:32,858 INFO L93 Difference]: Finished difference Result 194 states and 310 transitions. [2020-10-14 04:46:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:46:32,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 04:46:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:32,872 INFO L225 Difference]: With dead ends: 194 [2020-10-14 04:46:32,873 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 04:46:32,878 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 04:46:32,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 04:46:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-14 04:46:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 04:46:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-14 04:46:32,940 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 18 [2020-10-14 04:46:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:32,940 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-14 04:46:32,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:46:32,941 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-14 04:46:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:46:32,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:32,942 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 04:46:32,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:46:32,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash -246249165, now seen corresponding path program 1 times [2020-10-14 04:46:32,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:32,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554114322] [2020-10-14 04:46:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:46:33,013 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:46:33,013 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:46:33,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:46:33,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:46:33 BoogieIcfgContainer [2020-10-14 04:46:33,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:46:33,054 INFO L168 Benchmark]: Toolchain (without parser) took 2996.27 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 102.9 MB in the beginning and 127.1 MB in the end (delta: -24.2 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,056 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 121.5 MB in the beginning and 121.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.85 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 102.9 MB in the beginning and 181.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,058 INFO L168 Benchmark]: Boogie Preprocessor took 78.43 ms. Allocated memory is still 207.1 MB. Free memory was 181.0 MB in the beginning and 177.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,060 INFO L168 Benchmark]: RCFGBuilder took 761.50 ms. Allocated memory is still 207.1 MB. Free memory was 177.1 MB in the beginning and 134.4 MB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,069 INFO L168 Benchmark]: TraceAbstraction took 1534.20 ms. Allocated memory was 207.1 MB in the beginning and 233.8 MB in the end (delta: 26.7 MB). Free memory was 134.4 MB in the beginning and 127.1 MB in the end (delta: 7.3 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:33,080 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 121.5 MB in the beginning and 121.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 612.85 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 102.9 MB in the beginning and 181.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.43 ms. Allocated memory is still 207.1 MB. Free memory was 181.0 MB in the beginning and 177.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 761.50 ms. Allocated memory is still 207.1 MB. Free memory was 177.1 MB in the beginning and 134.4 MB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1534.20 ms. Allocated memory was 207.1 MB in the beginning and 233.8 MB in the end (delta: 26.7 MB). Free memory was 134.4 MB in the beginning and 127.1 MB in the end (delta: 7.3 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 258]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 257. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L251] double x = -1.0 / 0.0; [L252] double y = 1.0 / 0.0; [L254] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L254] RET, EXPR __ieee754_atan2(y, x) [L254] double res = __ieee754_atan2(y, x); [L257] COND TRUE res != 3 * pi_o_4 [L258] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 8 SDslu, 126 SDs, 0 SdLazy, 136 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=101occurred 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...