/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_1211b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:47:16,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:47:16,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:47:16,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:47:16,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:47:16,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:47:16,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:47:16,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:47:16,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:47:16,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:47:16,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:47:16,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:47:16,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:47:16,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:47:16,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:47:16,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:47:16,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:47:16,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:47:16,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:47:16,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:47:16,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:47:16,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:47:16,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:47:16,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:47:16,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:47:16,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:47:16,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:47:16,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:47:16,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:47:16,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:47:16,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:47:16,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:47:16,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:47:16,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:47:16,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:47:16,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:47:16,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:47:16,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:47:16,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:47:16,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:47:16,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:47:16,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:47:16,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:47:16,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:47:16,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:47:16,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:47:16,800 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:47:16,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:47:16,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:47:16,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:47:16,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:47:16,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:47:16,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:47:16,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:47:16,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:47:16,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:47:16,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:47:16,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:47:16,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:47:16,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:47:16,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:47:16,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:47:16,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:47:16,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:16,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:47:16,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:47:16,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:47:16,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:47:16,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:47:16,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:47:16,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:47:16,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:47:17,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:47:17,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:47:17,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:47:17,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:47:17,127 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:47:17,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1211b.c [2020-10-14 04:47:17,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93dd25f3a/d34a966b26584069aa9972e0ee06c33b/FLAG7ac9f7901 [2020-10-14 04:47:17,694 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:47:17,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1211b.c [2020-10-14 04:47:17,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93dd25f3a/d34a966b26584069aa9972e0ee06c33b/FLAG7ac9f7901 [2020-10-14 04:47:17,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93dd25f3a/d34a966b26584069aa9972e0ee06c33b [2020-10-14 04:47:18,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:47:18,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:47:18,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:18,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:47:18,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:47:18,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:17" (1/1) ... [2020-10-14 04:47:18,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524da1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18, skipping insertion in model container [2020-10-14 04:47:18,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:17" (1/1) ... [2020-10-14 04:47:18,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:47:18,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:47:18,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:18,275 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:47:18,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:18,436 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:47:18,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18 WrapperNode [2020-10-14 04:47:18,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:18,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:47:18,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:47:18,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:47:18,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (1/1) ... [2020-10-14 04:47:18,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (1/1) ... [2020-10-14 04:47:18,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (1/1) ... [2020-10-14 04:47:18,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (1/1) ... [2020-10-14 04:47:18,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (1/1) ... [2020-10-14 04:47:18,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (1/1) ... [2020-10-14 04:47:18,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (1/1) ... [2020-10-14 04:47:18,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:47:18,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:47:18,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:47:18,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:47:18,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:47:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:47:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-14 04:47:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-10-14 04:47:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-14 04:47:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-14 04:47:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-14 04:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-10-14 04:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-14 04:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-14 04:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:47:19,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:47:19,157 INFO L295 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-14 04:47:19,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:19 BoogieIcfgContainer [2020-10-14 04:47:19,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:47:19,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:47:19,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:47:19,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:47:19,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:17" (1/3) ... [2020-10-14 04:47:19,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b8cf50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:19, skipping insertion in model container [2020-10-14 04:47:19,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:18" (2/3) ... [2020-10-14 04:47:19,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b8cf50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:19, skipping insertion in model container [2020-10-14 04:47:19,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:19" (3/3) ... [2020-10-14 04:47:19,171 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1211b.c [2020-10-14 04:47:19,183 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:47:19,194 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:47:19,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:47:19,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:47:19,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:47:19,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:47:19,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:47:19,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:47:19,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:47:19,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:47:19,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:47:19,253 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-10-14 04:47:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:47:19,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:19,262 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] [2020-10-14 04:47:19,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:19,270 INFO L82 PathProgramCache]: Analyzing trace with hash -857751928, now seen corresponding path program 1 times [2020-10-14 04:47:19,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:19,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713460741] [2020-10-14 04:47:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:19,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:19,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:19,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:47:19,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:47:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-14 04:47:19,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:19,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 04:47:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:47:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:47:19,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:19,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:19,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:19,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:47:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:47:19,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:19,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:47:19,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 04:47:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:19,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:20,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:20,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:47:20,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:20,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:47:20,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:20,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:47:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-14 04:47:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:47:20,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713460741] [2020-10-14 04:47:20,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:20,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:47:20,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376625957] [2020-10-14 04:47:20,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:47:20,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:20,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:47:20,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:47:20,094 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-10-14 04:47:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:20,403 INFO L93 Difference]: Finished difference Result 130 states and 194 transitions. [2020-10-14 04:47:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:47:20,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 04:47:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:20,417 INFO L225 Difference]: With dead ends: 130 [2020-10-14 04:47:20,418 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 04:47:20,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:47:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 04:47:20,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-14 04:47:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 04:47:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-10-14 04:47:20,475 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 27 [2020-10-14 04:47:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:20,475 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-10-14 04:47:20,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:47:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-10-14 04:47:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:47:20,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:20,478 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] [2020-10-14 04:47:20,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:47:20,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:20,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:20,479 INFO L82 PathProgramCache]: Analyzing trace with hash -809886826, now seen corresponding path program 1 times [2020-10-14 04:47:20,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:20,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929386263] [2020-10-14 04:47:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:20,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:20,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:47:20,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 04:47:20,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:20,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:47:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 04:47:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:47:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:20,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:20,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:20,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:20,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:20,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:47:20,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:20,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:20,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:20,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:20,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:47:20,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:47:20,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:20,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:20,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 04:47:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:20,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:20,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:47:20,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:47:20,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:20,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:47:20,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929386263] [2020-10-14 04:47:20,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:20,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:47:20,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916265395] [2020-10-14 04:47:20,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:47:20,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:20,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:47:20,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:47:20,946 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2020-10-14 04:47:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:21,237 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-14 04:47:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:47:21,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-14 04:47:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:21,240 INFO L225 Difference]: With dead ends: 68 [2020-10-14 04:47:21,240 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 04:47:21,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:47:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 04:47:21,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-14 04:47:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 04:47:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-10-14 04:47:21,253 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 30 [2020-10-14 04:47:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:21,254 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-10-14 04:47:21,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:47:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-10-14 04:47:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:47:21,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:21,256 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] [2020-10-14 04:47:21,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:47:21,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:21,257 INFO L82 PathProgramCache]: Analyzing trace with hash -922561267, now seen corresponding path program 1 times [2020-10-14 04:47:21,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:21,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043880859] [2020-10-14 04:47:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:47:21,291 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:47:21,292 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:47:21,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:47:21,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:47:21 BoogieIcfgContainer [2020-10-14 04:47:21,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:47:21,322 INFO L168 Benchmark]: Toolchain (without parser) took 3318.49 ms. Allocated memory was 147.8 MB in the beginning and 242.2 MB in the end (delta: 94.4 MB). Free memory was 103.4 MB in the beginning and 202.0 MB in the end (delta: -98.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:47:21,323 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 04:47:21,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.34 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 103.4 MB in the beginning and 183.2 MB in the end (delta: -79.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:21,325 INFO L168 Benchmark]: Boogie Preprocessor took 62.94 ms. Allocated memory is still 205.5 MB. Free memory was 183.2 MB in the beginning and 180.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:21,325 INFO L168 Benchmark]: RCFGBuilder took 662.26 ms. Allocated memory is still 205.5 MB. Free memory was 180.4 MB in the beginning and 143.2 MB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:21,326 INFO L168 Benchmark]: TraceAbstraction took 2154.91 ms. Allocated memory was 205.5 MB in the beginning and 242.2 MB in the end (delta: 36.7 MB). Free memory was 142.2 MB in the beginning and 202.0 MB in the end (delta: -59.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:47:21,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 433.34 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 103.4 MB in the beginning and 183.2 MB in the end (delta: -79.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.94 ms. Allocated memory is still 205.5 MB. Free memory was 183.2 MB in the beginning and 180.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 662.26 ms. Allocated memory is still 205.5 MB. Free memory was 180.4 MB in the beginning and 143.2 MB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2154.91 ms. Allocated memory was 205.5 MB in the beginning and 242.2 MB in the end (delta: 36.7 MB). Free memory was 142.2 MB in the beginning and 202.0 MB in the end (delta: -59.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 150]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 120, overapproximation of someBinaryArithmeticDOUBLEoperation at line 144, overapproximation of bitwiseAnd at line 119, overapproximation of someBinaryDOUBLEComparisonOperation at line 149. Possible FailurePath: [L18] static const double one_modf = 1.0; [L144] double x = -1.0 / 0.0; [L145] double iptr = __VERIFIER_nondet_double(); [L146] CALL, EXPR modf_double(x, &iptr) [L21] __int32_t i0, i1, j0; [L22] __uint32_t i; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (i0) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (i1) = ew_u.parts.lsw [L29] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L30] COND TRUE j0 < 20 [L31] COND TRUE j0 < 0 [L33] ieee_double_shape_type iw_u; [L34] iw_u.parts.msw = (i0 & 0x80000000) [L35] iw_u.parts.lsw = (0) [L36] EXPR iw_u.value [L36] (*iptr) = iw_u.value [L38] return x; [L146] RET, EXPR modf_double(x, &iptr) [L146] double res = modf_double(x, &iptr); [L149] EXPR \read(iptr) [L149] CALL, EXPR isinf_double(iptr) [L112] __int32_t hx, lx; [L114] ieee_double_shape_type ew_u; [L115] ew_u.value = (x) [L116] EXPR ew_u.parts.msw [L116] (hx) = ew_u.parts.msw [L117] EXPR ew_u.parts.lsw [L117] (lx) = ew_u.parts.lsw [L119] hx &= 0x7fffffff [L120] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L121] hx = 0x7ff00000 - hx [L122] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L149] RET, EXPR isinf_double(iptr) [L149] isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) [L149] EXPR res == -0.0 && __signbit_double(res) == 1 [L149] isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) [L149] COND TRUE isinf_double(iptr) && !(res == -0.0 && __signbit_double(res) == 1) [L150] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 118 SDtfs, 80 SDslu, 44 SDs, 0 SdLazy, 222 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 3526 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...