/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_0686b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:17:21,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:17:21,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:17:21,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:17:21,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:17:21,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:17:21,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:17:21,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:17:21,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:17:21,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:17:21,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:17:21,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:17:21,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:17:21,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:17:21,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:17:21,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:17:21,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:17:21,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:17:21,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:17:21,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:17:21,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:17:21,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:17:21,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:17:21,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:17:21,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:17:21,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:17:21,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:17:21,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:17:21,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:17:21,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:17:21,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:17:21,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:17:21,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:17:21,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:17:21,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:17:21,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:17:21,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:17:21,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:17:21,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:17:21,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:17:21,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:17:21,794 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 23:17:21,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:17:21,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:17:21,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:17:21,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:17:21,840 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:17:21,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:17:21,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:17:21,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:17:21,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:17:21,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:17:21,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:17:21,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:17:21,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:17:21,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:17:21,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:17:21,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:17:21,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:17:21,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:17:21,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:17:21,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:17:21,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:17:21,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:17:21,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:17:21,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:17:21,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:17:21,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:17:21,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:17:21,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:17:21,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:17:21,847 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:17:22,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:17:22,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:17:22,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:17:22,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:17:22,181 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:17:22,181 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0686b.c [2020-10-14 23:17:22,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d21fcf1a/614cd9d27f2b4319971d8acc651103d9/FLAGf0a474a31 [2020-10-14 23:17:22,732 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:17:22,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0686b.c [2020-10-14 23:17:22,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d21fcf1a/614cd9d27f2b4319971d8acc651103d9/FLAGf0a474a31 [2020-10-14 23:17:23,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d21fcf1a/614cd9d27f2b4319971d8acc651103d9 [2020-10-14 23:17:23,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:17:23,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:17:23,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:17:23,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:17:23,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:17:23,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bab5c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23, skipping insertion in model container [2020-10-14 23:17:23,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:17:23,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:17:23,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:17:23,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:17:23,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:17:23,572 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:17:23,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23 WrapperNode [2020-10-14 23:17:23,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:17:23,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:17:23,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:17:23,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:17:23,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (1/1) ... [2020-10-14 23:17:23,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:17:23,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:17:23,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:17:23,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:17:23,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (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 23:17:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:17:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:17:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 23:17:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 23:17:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 23:17:23,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:17:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:17:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 23:17:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 23:17:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:17:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:17:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:17:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:17:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:17:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:17:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 23:17:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 23:17:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:17:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:17:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:17:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:17:24,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:17:24,365 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-14 23:17:24,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:24 BoogieIcfgContainer [2020-10-14 23:17:24,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:17:24,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:17:24,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:17:24,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:17:24,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:23" (1/3) ... [2020-10-14 23:17:24,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c5e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:24, skipping insertion in model container [2020-10-14 23:17:24,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:23" (2/3) ... [2020-10-14 23:17:24,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c5e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:24, skipping insertion in model container [2020-10-14 23:17:24,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:24" (3/3) ... [2020-10-14 23:17:24,384 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0686b.c [2020-10-14 23:17:24,396 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:17:24,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:17:24,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:17:24,456 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:17:24,456 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:17:24,456 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:17:24,456 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:17:24,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:17:24,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:17:24,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:17:24,457 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:17:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-14 23:17:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:17:24,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:24,483 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 23:17:24,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:24,489 INFO L82 PathProgramCache]: Analyzing trace with hash 947216650, now seen corresponding path program 1 times [2020-10-14 23:17:24,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:24,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959904059] [2020-10-14 23:17:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:24,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:24,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:24,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:17:24,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:17:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-14 23:17:24,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:24,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:17:24,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:24,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:17:25,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:17:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:25,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:25,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:17:25,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:17:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:17:25,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:25,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:25,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:17:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:17:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:17:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:17:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:17:25,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:17:25,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:17:25,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:17:25,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:17:25,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:17:25,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:17:25,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:17:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:17:25,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:17:25,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:17:25,195 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 23:17:25,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959904059] [2020-10-14 23:17:25,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:17:25,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:17:25,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222497411] [2020-10-14 23:17:25,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:17:25,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:17:25,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:17:25,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:17:25,224 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-14 23:17:25,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:17:25,675 INFO L93 Difference]: Finished difference Result 194 states and 310 transitions. [2020-10-14 23:17:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:17:25,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 23:17:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:17:25,689 INFO L225 Difference]: With dead ends: 194 [2020-10-14 23:17:25,689 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:17:25,694 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 23:17:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:17:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-14 23:17:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:17:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-14 23:17:25,751 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 18 [2020-10-14 23:17:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:17:25,752 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-14 23:17:25,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:17:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-14 23:17:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:17:25,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:17:25,753 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 23:17:25,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:17:25,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:17:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:17:25,755 INFO L82 PathProgramCache]: Analyzing trace with hash -246249165, now seen corresponding path program 1 times [2020-10-14 23:17:25,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:17:25,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645294004] [2020-10-14 23:17:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:17:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:17:25,802 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:17:25,803 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:17:25,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:17:25,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:25 BoogieIcfgContainer [2020-10-14 23:17:25,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:17:25,829 INFO L168 Benchmark]: Toolchain (without parser) took 2733.98 ms. Allocated memory was 138.9 MB in the beginning and 235.4 MB in the end (delta: 96.5 MB). Free memory was 101.4 MB in the beginning and 130.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:25,830 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 23:17:25,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.86 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 176.6 MB in the end (delta: -75.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:25,832 INFO L168 Benchmark]: Boogie Preprocessor took 73.50 ms. Allocated memory is still 202.4 MB. Free memory was 176.6 MB in the beginning and 172.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:25,833 INFO L168 Benchmark]: RCFGBuilder took 724.93 ms. Allocated memory is still 202.4 MB. Free memory was 172.7 MB in the beginning and 130.3 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:25,834 INFO L168 Benchmark]: TraceAbstraction took 1451.97 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 129.3 MB in the beginning and 130.3 MB in the end (delta: -999.7 kB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:17:25,838 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 477.86 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 176.6 MB in the end (delta: -75.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.50 ms. Allocated memory is still 202.4 MB. Free memory was 176.6 MB in the beginning and 172.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 724.93 ms. Allocated memory is still 202.4 MB. Free memory was 172.7 MB in the beginning and 130.3 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1451.97 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 129.3 MB in the beginning and 130.3 MB in the end (delta: -999.7 kB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 256]: 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 255. 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; [L250] double x = 1.0 / 0.0; [L251] double y = -1.0 / 0.0; [L253] 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; [L253] RET, EXPR __ieee754_atan2(y, x) [L253] double res = __ieee754_atan2(y, x); [L255] COND TRUE res != -pi_o_4 [L256] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 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...