/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_0683b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:46:23,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:46:23,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:46:23,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:46:23,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:46:23,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:46:23,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:46:23,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:46:23,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:46:23,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:46:23,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:46:23,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:46:23,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:46:23,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:46:23,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:46:23,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:46:23,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:46:23,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:46:23,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:46:23,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:46:23,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:46:23,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:46:23,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:46:23,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:46:23,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:46:23,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:46:23,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:46:23,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:46:23,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:46:23,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:46:23,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:46:23,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:46:23,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:46:23,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:46:23,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:46:23,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:46:23,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:46:23,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:46:23,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:46:23,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:46:23,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:46:23,806 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 04:46:23,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:46:23,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:46:23,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:46:23,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:46:23,844 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:46:23,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:46:23,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:46:23,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:46:23,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:46:23,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:46:23,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:46:23,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:46:23,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:46:23,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:46:23,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:46:23,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:46:23,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:46:23,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:46:23,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:46:23,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:46:23,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:46:23,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:23,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:46:23,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:46:23,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:46:23,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:46:23,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:46:23,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:46:23,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:46:23,851 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 04:46:24,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:46:24,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:46:24,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:46:24,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:46:24,174 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:46:24,175 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0683b.c [2020-10-14 04:46:24,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8319f1ab0/81e55fdd7aca494980e35970907a157f/FLAG62e9f5ed2 [2020-10-14 04:46:24,772 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:46:24,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0683b.c [2020-10-14 04:46:24,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8319f1ab0/81e55fdd7aca494980e35970907a157f/FLAG62e9f5ed2 [2020-10-14 04:46:25,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8319f1ab0/81e55fdd7aca494980e35970907a157f [2020-10-14 04:46:25,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:46:25,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:46:25,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:25,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:46:25,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:46:25,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2839cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25, skipping insertion in model container [2020-10-14 04:46:25,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:46:25,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:46:25,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:25,486 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:46:25,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:25,611 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:46:25,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25 WrapperNode [2020-10-14 04:46:25,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:25,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:46:25,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:46:25,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:46:25,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (1/1) ... [2020-10-14 04:46:25,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:46:25,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:46:25,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:46:25,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:46:25,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (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 04:46:25,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:46:25,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:46:25,751 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 04:46:25,751 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 04:46:25,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 04:46:25,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-14 04:46:25,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-14 04:46:25,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-14 04:46:25,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:46:25,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:46:25,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:46:25,752 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 04:46:25,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:46:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:46:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:46:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:46:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:46:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:46:25,753 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 04:46:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 04:46:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-14 04:46:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-14 04:46:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-14 04:46:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:46:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:46:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:46:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:46:26,457 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:46:26,457 INFO L295 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-14 04:46:26,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:26 BoogieIcfgContainer [2020-10-14 04:46:26,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:46:26,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:46:26,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:46:26,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:46:26,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:46:25" (1/3) ... [2020-10-14 04:46:26,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9636be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:26, skipping insertion in model container [2020-10-14 04:46:26,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:25" (2/3) ... [2020-10-14 04:46:26,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9636be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:26, skipping insertion in model container [2020-10-14 04:46:26,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:26" (3/3) ... [2020-10-14 04:46:26,476 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0683b.c [2020-10-14 04:46:26,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:46:26,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:46:26,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:46:26,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:46:26,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:46:26,533 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:46:26,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:46:26,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:46:26,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:46:26,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:46:26,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:46:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-10-14 04:46:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:46:26,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:26,565 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:46:26,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:26,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:26,572 INFO L82 PathProgramCache]: Analyzing trace with hash 466315102, now seen corresponding path program 1 times [2020-10-14 04:46:26,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:26,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063651995] [2020-10-14 04:46:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:27,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:27,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:46:27,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:46:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-14 04:46:27,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:27,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:27,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:46:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:46:27,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:27,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:27,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:27,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:46:27,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:27,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:46:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:27,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:27,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:27,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:46:27,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:27,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:46:27,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:27,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:46:27,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:27,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:27,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:46:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:27,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:27,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:27,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:46:27,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:46:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:46:27,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:27,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:46:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:46:27,767 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 04:46:27,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063651995] [2020-10-14 04:46:27,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:27,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:46:27,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280131026] [2020-10-14 04:46:27,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:46:27,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:27,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:46:27,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:46:27,801 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 4 states. [2020-10-14 04:46:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:28,385 INFO L93 Difference]: Finished difference Result 250 states and 387 transitions. [2020-10-14 04:46:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:46:28,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-14 04:46:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:28,403 INFO L225 Difference]: With dead ends: 250 [2020-10-14 04:46:28,404 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 04:46:28,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 04:46:28,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 04:46:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-14 04:46:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 04:46:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2020-10-14 04:46:28,499 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 28 [2020-10-14 04:46:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:28,502 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2020-10-14 04:46:28,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:46:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2020-10-14 04:46:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 04:46:28,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:28,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:46:28,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:46:28,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:28,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:28,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1702044329, now seen corresponding path program 1 times [2020-10-14 04:46:28,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:28,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784183262] [2020-10-14 04:46:28,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:28,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:28,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 04:46:28,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 04:46:28,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:28,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:46:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 04:46:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:46:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:28,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:28,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:28,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:46:28,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:28,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:28,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:46:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:28,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:28,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:28,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:46:28,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:46:28,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:28,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 04:46:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:28,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:28,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:46:28,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:28,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 04:46:28,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:28,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:28,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:46:28,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:28,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:28,968 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 04:46:28,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784183262] [2020-10-14 04:46:28,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:28,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:46:28,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499860061] [2020-10-14 04:46:28,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:46:28,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:28,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:46:28,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:46:28,977 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 5 states. [2020-10-14 04:46:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:29,536 INFO L93 Difference]: Finished difference Result 225 states and 306 transitions. [2020-10-14 04:46:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:46:29,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-14 04:46:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:29,541 INFO L225 Difference]: With dead ends: 225 [2020-10-14 04:46:29,541 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 04:46:29,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:46:29,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 04:46:29,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-14 04:46:29,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 04:46:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 164 transitions. [2020-10-14 04:46:29,575 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 164 transitions. Word has length 31 [2020-10-14 04:46:29,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:29,575 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 164 transitions. [2020-10-14 04:46:29,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:46:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 164 transitions. [2020-10-14 04:46:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 04:46:29,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:29,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:46:29,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:46:29,578 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:29,578 INFO L82 PathProgramCache]: Analyzing trace with hash 810186703, now seen corresponding path program 1 times [2020-10-14 04:46:29,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:29,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837066891] [2020-10-14 04:46:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:46:29,634 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:46:29,634 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:46:29,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:46:29,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:46:29 BoogieIcfgContainer [2020-10-14 04:46:29,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:46:29,664 INFO L168 Benchmark]: Toolchain (without parser) took 4568.77 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 102.4 MB in the beginning and 143.5 MB in the end (delta: -41.1 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:29,665 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 04:46:29,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.36 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.9 MB in the beginning and 176.2 MB in the end (delta: -74.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:29,667 INFO L168 Benchmark]: Boogie Preprocessor took 80.73 ms. Allocated memory is still 202.9 MB. Free memory was 176.2 MB in the beginning and 172.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:29,668 INFO L168 Benchmark]: RCFGBuilder took 770.16 ms. Allocated memory is still 202.9 MB. Free memory was 172.3 MB in the beginning and 119.9 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:29,669 INFO L168 Benchmark]: TraceAbstraction took 3197.09 ms. Allocated memory was 202.9 MB in the beginning and 244.8 MB in the end (delta: 41.9 MB). Free memory was 119.9 MB in the beginning and 143.5 MB in the end (delta: -23.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:29,673 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 515.36 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.9 MB in the beginning and 176.2 MB in the end (delta: -74.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.73 ms. Allocated memory is still 202.9 MB. Free memory was 176.2 MB in the beginning and 172.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 770.16 ms. Allocated memory is still 202.9 MB. Free memory was 172.3 MB in the beginning and 119.9 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3197.09 ms. Allocated memory was 202.9 MB in the beginning and 244.8 MB in the end (delta: 41.9 MB). Free memory was 119.9 MB in the beginning and 143.5 MB in the end (delta: -23.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 298]: 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 297. 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; [L289] double x = 1.0 / 0.0; [L290] double y = __VERIFIER_nondet_double(); [L292] CALL, EXPR isinf_double(x) [L246] __int32_t hx, lx; [L248] ieee_double_shape_type ew_u; [L249] ew_u.value = (x) [L250] EXPR ew_u.parts.msw [L250] (hx) = ew_u.parts.msw [L251] EXPR ew_u.parts.lsw [L251] (lx) = ew_u.parts.lsw [L253] hx &= 0x7fffffff [L254] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L255] hx = 0x7ff00000 - hx [L256] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L292] RET, EXPR isinf_double(x) [L292] EXPR isinf_double(x) && isfinite_double(y) [L292] CALL, EXPR isfinite_double(y) [L260] __int32_t hx; [L262] ieee_double_shape_type gh_u; [L263] gh_u.value = (x) [L264] EXPR gh_u.parts.msw [L264] (hx) = gh_u.parts.msw [L266] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L292] RET, EXPR isfinite_double(y) [L292] EXPR isinf_double(x) && isfinite_double(y) [L292] COND TRUE isinf_double(x) && isfinite_double(y) && y > 0.0 [L294] 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; [L294] RET, EXPR __ieee754_atan2(y, x) [L294] double res = __ieee754_atan2(y, x); [L297] EXPR res == 0.0 && __signbit_double(res) == 0 [L297] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L298] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 322 SDtfs, 28 SDslu, 440 SDs, 0 SdLazy, 342 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 6105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...