/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=NARROWEST --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_0683a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:11,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:11,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:11,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:11,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:11,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:11,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:11,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:11,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:11,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:11,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:11,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:11,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:11,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:11,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:11,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:11,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:11,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:11,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:11,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:11,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:11,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:11,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:11,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:11,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:11,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:11,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:11,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:11,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:11,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:11,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:11,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:11,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:11,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:11,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:11,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:11,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:11,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:11,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:11,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:11,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:11,655 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 [2020-10-13 10:18:11,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:11,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:11,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:11,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:11,700 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:11,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:11,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:11,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:11,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:11,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:11,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:11,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:11,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:11,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:11,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:11,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:11,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:11,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:11,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:11,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:11,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:11,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:11,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:11,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:11,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:11,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:11,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:11,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:11,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:11,706 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:18:12,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:12,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:12,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:12,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:12,052 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:12,053 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0683a.c [2020-10-13 10:18:12,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7caea6134/84c3209ee7224375ac947c522e5476ba/FLAG8809043c8 [2020-10-13 10:18:12,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:12,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0683a.c [2020-10-13 10:18:12,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7caea6134/84c3209ee7224375ac947c522e5476ba/FLAG8809043c8 [2020-10-13 10:18:12,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7caea6134/84c3209ee7224375ac947c522e5476ba [2020-10-13 10:18:12,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:12,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:12,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:12,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:13,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:13,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:13,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d7d7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13, skipping insertion in model container [2020-10-13 10:18:13,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:13,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:13,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:13,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:13,420 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:13,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:13,513 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:13,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13 WrapperNode [2020-10-13 10:18:13,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:13,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:13,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:13,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:13,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (1/1) ... [2020-10-13 10:18:13,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (1/1) ... [2020-10-13 10:18:13,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (1/1) ... [2020-10-13 10:18:13,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (1/1) ... [2020-10-13 10:18:13,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (1/1) ... [2020-10-13 10:18:13,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (1/1) ... [2020-10-13 10:18:13,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (1/1) ... [2020-10-13 10:18:13,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:13,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:13,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:13,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:13,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (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 [2020-10-13 10:18:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-13 10:18:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-13 10:18:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-13 10:18:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-13 10:18:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-13 10:18:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-13 10:18:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:18:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-13 10:18:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-13 10:18:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-13 10:18:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-13 10:18:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-13 10:18:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-13 10:18:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:18:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:14,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:14,553 INFO L295 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-13 10:18:14,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:14 BoogieIcfgContainer [2020-10-13 10:18:14,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:14,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:14,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:14,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:14,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:12" (1/3) ... [2020-10-13 10:18:14,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff381e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:14, skipping insertion in model container [2020-10-13 10:18:14,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:13" (2/3) ... [2020-10-13 10:18:14,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff381e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:14, skipping insertion in model container [2020-10-13 10:18:14,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:14" (3/3) ... [2020-10-13 10:18:14,567 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0683a.c [2020-10-13 10:18:14,584 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:14,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:14,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:14,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:14,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:14,665 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:14,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:14,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:14,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:14,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:14,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-10-13 10:18:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:18:14,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:14,695 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] [2020-10-13 10:18:14,696 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:14,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:14,701 INFO L82 PathProgramCache]: Analyzing trace with hash 466315102, now seen corresponding path program 1 times [2020-10-13 10:18:14,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:14,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836677458] [2020-10-13 10:18:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:14,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:15,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:18:15,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:18:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-13 10:18:15,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 10:18:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:18:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:15,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:15,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:15,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 10:18:15,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:15,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:15,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:15,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:18:15,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:15,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:18:15,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:15,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:15,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:15,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:15,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:18:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:15,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:18:15,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:15,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:18:15,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:18:15,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836677458] [2020-10-13 10:18:15,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:15,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:15,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217522324] [2020-10-13 10:18:15,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:15,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:15,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:15,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:15,957 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 4 states. [2020-10-13 10:18:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:16,581 INFO L93 Difference]: Finished difference Result 250 states and 387 transitions. [2020-10-13 10:18:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:18:16,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-13 10:18:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:16,603 INFO L225 Difference]: With dead ends: 250 [2020-10-13 10:18:16,603 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 10:18:16,610 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 [2020-10-13 10:18:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 10:18:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-13 10:18:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-13 10:18:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2020-10-13 10:18:16,695 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 28 [2020-10-13 10:18:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:16,696 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2020-10-13 10:18:16,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2020-10-13 10:18:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:18:16,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:16,699 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] [2020-10-13 10:18:16,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:16,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:16,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1702044329, now seen corresponding path program 1 times [2020-10-13 10:18:16,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:16,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609180127] [2020-10-13 10:18:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:17,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:18:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-13 10:18:17,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:18:17,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:18:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:18:17,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:17,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:17,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:18:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:17,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:17,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:18:17,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 10:18:17,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:17,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:18:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:17,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:17,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:17,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:18:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 10:18:17,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:18:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:18:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:18:17,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609180127] [2020-10-13 10:18:17,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:17,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:18:17,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783811182] [2020-10-13 10:18:17,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:18:17,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:17,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:18:17,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:17,395 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 5 states. [2020-10-13 10:18:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:18,192 INFO L93 Difference]: Finished difference Result 225 states and 306 transitions. [2020-10-13 10:18:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:18:18,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-13 10:18:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:18,197 INFO L225 Difference]: With dead ends: 225 [2020-10-13 10:18:18,198 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 10:18:18,201 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 [2020-10-13 10:18:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 10:18:18,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-13 10:18:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-13 10:18:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 164 transitions. [2020-10-13 10:18:18,233 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 164 transitions. Word has length 31 [2020-10-13 10:18:18,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:18,233 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 164 transitions. [2020-10-13 10:18:18,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:18:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 164 transitions. [2020-10-13 10:18:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:18:18,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:18,237 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] [2020-10-13 10:18:18,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:18,238 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:18,239 INFO L82 PathProgramCache]: Analyzing trace with hash 810186703, now seen corresponding path program 1 times [2020-10-13 10:18:18,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:18,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47038405] [2020-10-13 10:18:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:18,365 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:18,366 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:18,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:18:18,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:18 BoogieIcfgContainer [2020-10-13 10:18:18,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:18,394 INFO L168 Benchmark]: Toolchain (without parser) took 5398.41 ms. Allocated memory was 144.2 MB in the beginning and 247.5 MB in the end (delta: 103.3 MB). Free memory was 101.2 MB in the beginning and 154.3 MB in the end (delta: -53.1 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:18,395 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:18:18,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.73 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 174.4 MB in the end (delta: -73.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:18,397 INFO L168 Benchmark]: Boogie Preprocessor took 82.75 ms. Allocated memory is still 201.9 MB. Free memory was 174.4 MB in the beginning and 170.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:18,398 INFO L168 Benchmark]: RCFGBuilder took 960.38 ms. Allocated memory is still 201.9 MB. Free memory was 170.8 MB in the beginning and 118.8 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:18,399 INFO L168 Benchmark]: TraceAbstraction took 3831.02 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 118.8 MB in the beginning and 154.3 MB in the end (delta: -35.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:18,403 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 144.2 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 517.73 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 174.4 MB in the end (delta: -73.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.75 ms. Allocated memory is still 201.9 MB. Free memory was 174.4 MB in the beginning and 170.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 960.38 ms. Allocated memory is still 201.9 MB. Free memory was 170.8 MB in the beginning and 118.8 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3831.02 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 118.8 MB in the beginning and 154.3 MB in the end (delta: -35.5 MB). Peak memory consumption was 10.1 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) == 1 [L297] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L298] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 322 SDtfs, 28 SDslu, 440 SDs, 0 SdLazy, 342 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s 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, 0.2s SatisfiabilityAnalysisTime, 1.6s 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...