/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:17,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:17,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:17,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:17,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:17,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:17,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:17,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:17,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:17,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:17,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:17,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:17,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:17,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:17,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:17,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:17,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:17,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:17,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:17,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:17,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:17,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:17,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:17,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:17,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:17,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:17,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:17,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:17,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:17,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:17,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:17,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:17,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:17,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:17,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:17,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:17,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:17,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:17,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:17,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:17,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:17,143 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 [2020-10-28 14:27:17,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:17,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:17,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:17,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:17,180 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:17,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:17,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:17,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:17,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:17,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:17,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:17,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:17,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:17,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:17,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:17,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:17,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:17,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:17,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:17,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:17,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:17,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:17,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:17,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:17,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:17,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:17,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:17,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:17,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:17,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:17,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:17,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:17,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:17,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:17,668 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:17,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-10-28 14:27:17,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4395105/fff04081d7004a7f82620d0d94b7f306/FLAGb3182320c [2020-10-28 14:27:18,423 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:18,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-10-28 14:27:18,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4395105/fff04081d7004a7f82620d0d94b7f306/FLAGb3182320c [2020-10-28 14:27:18,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c4395105/fff04081d7004a7f82620d0d94b7f306 [2020-10-28 14:27:18,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:18,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:18,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:18,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:18,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:18,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:18" (1/1) ... [2020-10-28 14:27:18,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e047d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:18, skipping insertion in model container [2020-10-28 14:27:18,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:18" (1/1) ... [2020-10-28 14:27:18,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:18,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:19,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:19,097 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:19,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:19,148 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:19,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19 WrapperNode [2020-10-28 14:27:19,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:19,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:19,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:19,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:19,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (1/1) ... [2020-10-28 14:27:19,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (1/1) ... [2020-10-28 14:27:19,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (1/1) ... [2020-10-28 14:27:19,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (1/1) ... [2020-10-28 14:27:19,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (1/1) ... [2020-10-28 14:27:19,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (1/1) ... [2020-10-28 14:27:19,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (1/1) ... [2020-10-28 14:27:19,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:19,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:19,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:19,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:19,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (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 [2020-10-28 14:27:19,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:19,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:19,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:19,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-28 14:27:19,291 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-28 14:27:19,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-28 14:27:19,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:19,292 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:19,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:19,293 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:27:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-28 14:27:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-28 14:27:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-28 14:27:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:27:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:19,916 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:27:19,916 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 14:27:19,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:19 BoogieIcfgContainer [2020-10-28 14:27:19,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:27:19,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:27:19,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:27:19,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:27:19,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:18" (1/3) ... [2020-10-28 14:27:19,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cde9baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:19, skipping insertion in model container [2020-10-28 14:27:19,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:19" (2/3) ... [2020-10-28 14:27:19,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cde9baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:19, skipping insertion in model container [2020-10-28 14:27:19,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:19" (3/3) ... [2020-10-28 14:27:19,934 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-10-28 14:27:19,949 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:27:19,955 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:27:19,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:27:20,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:27:20,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:27:20,019 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:27:20,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:27:20,020 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:27:20,020 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:27:20,020 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:27:20,020 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:27:20,044 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-28 14:27:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:27:20,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:20,053 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] [2020-10-28 14:27:20,053 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:20,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1163153451, now seen corresponding path program 1 times [2020-10-28 14:27:20,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:20,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810844836] [2020-10-28 14:27:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:20,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:27:20,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:27:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-28 14:27:20,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:20,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 14:27:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:27:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:20,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:20,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:20,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:20,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:20,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:27:20,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:20,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:27:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:21,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:21,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:27:21,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:27:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 14:27:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:21,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:27:21,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:21,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:27:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:21,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:27:21,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:27:21,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:21,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:27:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:21,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:21,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810844836] [2020-10-28 14:27:21,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:21,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:27:21,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949910419] [2020-10-28 14:27:21,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:27:21,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:21,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:27:21,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:27:21,088 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2020-10-28 14:27:21,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:21,375 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-10-28 14:27:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:27:21,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:27:21,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:21,385 INFO L225 Difference]: With dead ends: 84 [2020-10-28 14:27:21,386 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 14:27:21,389 INFO L677 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 [2020-10-28 14:27:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 14:27:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-28 14:27:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 14:27:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-28 14:27:21,442 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 23 [2020-10-28 14:27:21,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:21,443 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-28 14:27:21,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:27:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-28 14:27:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:27:21,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:21,446 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] [2020-10-28 14:27:21,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:27:21,446 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:21,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:21,447 INFO L82 PathProgramCache]: Analyzing trace with hash 51245620, now seen corresponding path program 1 times [2020-10-28 14:27:21,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:21,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287834205] [2020-10-28 14:27:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:21,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:21,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:27:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 14:27:21,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:21,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:27:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:27:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:21,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:21,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:21,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:21,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:27:21,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:21,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:21,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:21,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:21,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:21,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:21,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 14:27:21,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 14:27:21,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:21,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:27:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:27:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:21,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 14:27:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:21,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:21,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:27:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 14:27:21,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:21,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:27:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:27:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:21,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287834205] [2020-10-28 14:27:21,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:21,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:27:21,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165196901] [2020-10-28 14:27:21,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:27:21,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:27:21,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:27:21,971 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-28 14:27:22,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:22,265 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-28 14:27:22,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:27:22,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-28 14:27:22,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:22,269 INFO L225 Difference]: With dead ends: 61 [2020-10-28 14:27:22,269 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 14:27:22,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:27:22,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 14:27:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-28 14:27:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:27:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-28 14:27:22,284 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2020-10-28 14:27:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:22,284 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-28 14:27:22,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:27:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-28 14:27:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:27:22,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:22,286 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] [2020-10-28 14:27:22,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:27:22,286 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:22,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:22,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1625087789, now seen corresponding path program 1 times [2020-10-28 14:27:22,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:22,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229284301] [2020-10-28 14:27:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:27:22,311 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:27:22,311 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:27:22,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:27:22,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:27:22 BoogieIcfgContainer [2020-10-28 14:27:22,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:27:22,354 INFO L168 Benchmark]: Toolchain (without parser) took 3568.01 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 112.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:22,355 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 100.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:27:22,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.40 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 117.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:22,358 INFO L168 Benchmark]: Boogie Preprocessor took 49.85 ms. Allocated memory is still 153.1 MB. Free memory was 117.5 MB in the beginning and 115.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:22,360 INFO L168 Benchmark]: RCFGBuilder took 717.74 ms. Allocated memory is still 153.1 MB. Free memory was 115.8 MB in the beginning and 131.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:22,362 INFO L168 Benchmark]: TraceAbstraction took 2425.17 ms. Allocated memory is still 153.1 MB. Free memory was 131.0 MB in the beginning and 112.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:22,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 100.3 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 359.40 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 117.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.85 ms. Allocated memory is still 153.1 MB. Free memory was 117.5 MB in the beginning and 115.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 717.74 ms. Allocated memory is still 153.1 MB. Free memory was 115.8 MB in the beginning and 131.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2425.17 ms. Allocated memory is still 153.1 MB. Free memory was 131.0 MB in the beginning and 112.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] RET, EXPR __fpclassify_double(x) [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1252a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 20 SDslu, 146 SDs, 0 SdLazy, 113 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 1.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3627 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...