/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=SHALLOWEST --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_0682b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:01:39,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:01:39,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:01:39,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:01:39,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:01:39,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:01:39,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:01:39,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:01:39,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:01:39,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:01:39,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:01:39,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:01:39,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:01:39,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:01:39,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:01:39,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:01:39,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:01:39,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:01:39,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:01:39,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:01:39,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:01:39,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:01:39,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:01:39,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:01:39,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:01:39,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:01:39,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:01:39,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:01:39,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:01:39,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:01:39,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:01:39,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:01:39,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:01:39,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:01:39,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:01:39,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:01:39,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:01:39,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:01:39,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:01:39,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:01:39,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:01:39,245 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 [2020-10-27 01:01:39,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:01:39,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:01:39,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:01:39,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:01:39,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:01:39,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:01:39,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:01:39,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:01:39,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:01:39,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:01:39,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:01:39,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:01:39,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:01:39,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:01:39,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:01:39,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:01:39,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:01:39,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:01:39,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:01:39,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:01:39,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:01:39,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:01:39,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:01:39,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:01:39,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:01:39,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:01:39,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:01:39,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:01:39,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:01:39,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:01:39,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:01:39,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:01:39,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:01:39,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:01:39,826 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:01:39,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0682b.c [2020-10-27 01:01:39,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8df85f6/3f00eee51c2c430ea979673cde1bf41c/FLAG17222a05f [2020-10-27 01:01:40,579 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:01:40,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0682b.c [2020-10-27 01:01:40,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8df85f6/3f00eee51c2c430ea979673cde1bf41c/FLAG17222a05f [2020-10-27 01:01:40,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8df85f6/3f00eee51c2c430ea979673cde1bf41c [2020-10-27 01:01:40,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:01:40,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:01:40,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:40,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:01:40,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:01:40,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:40" (1/1) ... [2020-10-27 01:01:40,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5698ac04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:40, skipping insertion in model container [2020-10-27 01:01:40,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:40" (1/1) ... [2020-10-27 01:01:40,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:01:41,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:01:41,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:41,273 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:01:41,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:41,376 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:01:41,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41 WrapperNode [2020-10-27 01:01:41,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:41,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:01:41,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:01:41,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:01:41,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (1/1) ... [2020-10-27 01:01:41,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (1/1) ... [2020-10-27 01:01:41,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (1/1) ... [2020-10-27 01:01:41,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (1/1) ... [2020-10-27 01:01:41,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (1/1) ... [2020-10-27 01:01:41,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (1/1) ... [2020-10-27 01:01:41,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (1/1) ... [2020-10-27 01:01:41,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:01:41,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:01:41,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:01:41,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:01:41,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (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 [2020-10-27 01:01:41,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:01:41,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:01:41,613 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:01:41,613 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-27 01:01:41,613 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-27 01:01:41,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-27 01:01:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-27 01:01:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-27 01:01:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:01:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:01:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 01:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-27 01:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:01:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:01:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:01:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:01:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-27 01:01:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-27 01:01:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-27 01:01:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-27 01:01:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:01:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:01:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:01:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:01:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:01:42,689 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:01:42,690 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-27 01:01:42,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:42 BoogieIcfgContainer [2020-10-27 01:01:42,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:01:42,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:01:42,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:01:42,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:01:42,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:01:40" (1/3) ... [2020-10-27 01:01:42,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e780e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:42, skipping insertion in model container [2020-10-27 01:01:42,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:41" (2/3) ... [2020-10-27 01:01:42,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e780e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:42, skipping insertion in model container [2020-10-27 01:01:42,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:42" (3/3) ... [2020-10-27 01:01:42,702 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2020-10-27 01:01:42,714 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:01:42,721 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:01:42,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:01:42,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:01:42,767 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:01:42,767 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:01:42,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:01:42,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:01:42,767 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:01:42,767 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:01:42,768 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:01:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2020-10-27 01:01:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 01:01:42,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:42,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:01:42,798 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:42,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:42,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1506689118, now seen corresponding path program 1 times [2020-10-27 01:01:42,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:42,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28726636] [2020-10-27 01:01:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:01:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:01:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-27 01:01:44,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:44,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:44,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:01:44,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:44,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:01:44,368 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 01:01:44,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:01:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:44,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:44,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:01:44,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 01:01:44,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:01:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:44,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:01:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:44,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:44,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:01:44,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:01:44,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:44,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:44,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:01:44,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:44,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:44,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:01:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:44,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:44,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:44,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:44,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:01:44,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:01:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:01:44,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:01:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:01:44,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28726636] [2020-10-27 01:01:44,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:01:44,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:01:44,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400607067] [2020-10-27 01:01:44,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:01:44,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:01:44,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:01:44,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:01:44,520 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 4 states. [2020-10-27 01:01:44,680 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 01:01:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:01:45,281 INFO L93 Difference]: Finished difference Result 237 states and 368 transitions. [2020-10-27 01:01:45,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:01:45,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-27 01:01:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:01:45,294 INFO L225 Difference]: With dead ends: 237 [2020-10-27 01:01:45,295 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 01:01:45,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:01:45,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 01:01:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-27 01:01:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 01:01:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions. [2020-10-27 01:01:45,356 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 28 [2020-10-27 01:01:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:01:45,357 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions. [2020-10-27 01:01:45,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:01:45,359 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions. [2020-10-27 01:01:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 01:01:45,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:45,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:01:45,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:01:45,361 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:45,365 INFO L82 PathProgramCache]: Analyzing trace with hash -797767086, now seen corresponding path program 1 times [2020-10-27 01:01:45,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:45,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301516488] [2020-10-27 01:01:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:45,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:45,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:01:45,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-27 01:01:45,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:01:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 01:01:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:01:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:45,875 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 01:01:45,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:01:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:45,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:01:45,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:01:45,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:01:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:01:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:45,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:45,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:01:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 01:01:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:01:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 01:01:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:45,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:45,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 01:01:45,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:45,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 01:01:45,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:01:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:45,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:01:46,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301516488] [2020-10-27 01:01:46,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:01:46,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:01:46,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288125864] [2020-10-27 01:01:46,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:01:46,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:01:46,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:01:46,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:01:46,010 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand 5 states. [2020-10-27 01:01:46,147 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 01:01:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:01:46,662 INFO L93 Difference]: Finished difference Result 209 states and 288 transitions. [2020-10-27 01:01:46,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:01:46,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-27 01:01:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:01:46,666 INFO L225 Difference]: With dead ends: 209 [2020-10-27 01:01:46,666 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 01:01:46,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:01:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 01:01:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-27 01:01:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 01:01:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2020-10-27 01:01:46,691 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 31 [2020-10-27 01:01:46,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:01:46,691 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2020-10-27 01:01:46,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:01:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2020-10-27 01:01:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 01:01:46,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:46,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:01:46,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:01:46,694 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:46,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:46,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1467962601, now seen corresponding path program 1 times [2020-10-27 01:01:46,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:46,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6808928] [2020-10-27 01:01:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:01:46,795 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:01:46,795 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:01:46,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:01:46,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:01:46 BoogieIcfgContainer [2020-10-27 01:01:46,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:01:46,823 INFO L168 Benchmark]: Toolchain (without parser) took 5876.61 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 126.4 MB in the beginning and 158.4 MB in the end (delta: -32.0 MB). Peak memory consumption was 108.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:46,823 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:01:46,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.45 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 110.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:46,825 INFO L168 Benchmark]: Boogie Preprocessor took 127.44 ms. Allocated memory is still 151.0 MB. Free memory was 110.5 MB in the beginning and 107.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:46,826 INFO L168 Benchmark]: RCFGBuilder took 1183.63 ms. Allocated memory is still 151.0 MB. Free memory was 107.3 MB in the beginning and 96.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:46,827 INFO L168 Benchmark]: TraceAbstraction took 4126.78 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 95.9 MB in the beginning and 158.4 MB in the end (delta: -62.5 MB). Peak memory consumption was 78.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:46,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 422.45 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 110.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 127.44 ms. Allocated memory is still 151.0 MB. Free memory was 110.5 MB in the beginning and 107.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1183.63 ms. Allocated memory is still 151.0 MB. Free memory was 107.3 MB in the beginning and 96.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4126.78 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 95.9 MB in the beginning and 158.4 MB in the end (delta: -62.5 MB). Peak memory consumption was 78.0 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 bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 286. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L278] double x = -1.0 / 0.0; [L279] double y = __VERIFIER_nondet_double(); [L281] CALL, EXPR isinf_double(x) [L248] __int32_t hx, lx; [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L281] RET, EXPR isinf_double(x) [L281] EXPR isinf_double(x) && isfinite_double(y) [L281] CALL, EXPR isfinite_double(y) [L262] __int32_t hx; [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L281] RET, EXPR isfinite_double(y) [L281] EXPR isinf_double(x) && isfinite_double(y) [L281] COND TRUE isinf_double(x) && isfinite_double(y) && y > 0.0 [L283] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L283] RET, EXPR __ieee754_atan2(y, x) [L283] double res = __ieee754_atan2(y, x); [L286] COND TRUE res != pi [L287] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0682b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 28 SDslu, 414 SDs, 0 SdLazy, 321 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 7131 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...