/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_0683a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:11,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:11,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:11,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:11,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:11,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:11,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:11,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:11,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:11,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:11,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:11,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:11,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:11,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:11,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:11,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:11,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:11,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:11,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:11,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:11,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:11,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:11,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:11,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:11,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:11,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:11,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:11,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:11,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:11,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:11,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:11,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:11,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:11,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:11,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:11,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:11,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:11,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:11,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:11,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:11,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:11,326 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 14:26:11,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:11,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:11,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:11,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:11,383 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:11,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:11,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:11,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:11,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:11,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:11,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:11,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:11,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:11,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:11,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:11,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:11,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:11,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:11,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:11,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:11,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:11,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:11,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:11,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:11,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:11,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:11,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:11,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:11,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:11,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:11,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:11,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:11,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:11,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:11,911 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:11,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0683a.c [2020-10-28 14:26:11,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0f7498bc/b7b42aee62e241559a22f91724e4568d/FLAG4ca65dccb [2020-10-28 14:26:12,704 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:12,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0683a.c [2020-10-28 14:26:12,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0f7498bc/b7b42aee62e241559a22f91724e4568d/FLAG4ca65dccb [2020-10-28 14:26:13,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0f7498bc/b7b42aee62e241559a22f91724e4568d [2020-10-28 14:26:13,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:13,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:13,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:13,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:13,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:13,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545cf398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13, skipping insertion in model container [2020-10-28 14:26:13,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:13,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:13,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:13,458 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:13,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:13,636 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:13,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13 WrapperNode [2020-10-28 14:26:13,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:13,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:13,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:13,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:13,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (1/1) ... [2020-10-28 14:26:13,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:13,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:13,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:13,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:13,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:13,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:13,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:13,863 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:13,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-28 14:26:13,863 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-28 14:26:13,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-28 14:26:13,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-28 14:26:13,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-28 14:26:13,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-28 14:26:13,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:26:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-28 14:26:13,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-28 14:26:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-28 14:26:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-28 14:26:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-28 14:26:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-28 14:26:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:26:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:14,793 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:14,793 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-28 14:26:14,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:14 BoogieIcfgContainer [2020-10-28 14:26:14,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:14,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:14,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:14,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:14,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:13" (1/3) ... [2020-10-28 14:26:14,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9b7965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:14, skipping insertion in model container [2020-10-28 14:26:14,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:13" (2/3) ... [2020-10-28 14:26:14,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9b7965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:14, skipping insertion in model container [2020-10-28 14:26:14,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:14" (3/3) ... [2020-10-28 14:26:14,805 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0683a.c [2020-10-28 14:26:14,817 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:14,822 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:14,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:14,866 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:14,866 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:14,866 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:14,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:14,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:14,867 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:14,867 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:14,867 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2020-10-28 14:26:14,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:26:14,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:14,904 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] [2020-10-28 14:26:14,904 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:14,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1563664449, now seen corresponding path program 1 times [2020-10-28 14:26:14,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:14,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105379387] [2020-10-28 14:26:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:16,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:16,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 14:26:16,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:26:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-10-28 14:26:16,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:16,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:26:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:26:16,318 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 14:26:16,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:16,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:16,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:16,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:16,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 14:26:16,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:16,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:16,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:16,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:16,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:16,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:16,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:26:16,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:16,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 14:26:16,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:16,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:16,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:26:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:16,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:16,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:26:16,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:26:16,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:16,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:16,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:16,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:26:16,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:16,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:16,494 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 14:26:16,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105379387] [2020-10-28 14:26:16,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:16,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:16,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216618487] [2020-10-28 14:26:16,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:16,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:16,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:16,523 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 4 states. [2020-10-28 14:26:16,705 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:26:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:17,358 INFO L93 Difference]: Finished difference Result 255 states and 393 transitions. [2020-10-28 14:26:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:17,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 14:26:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:17,373 INFO L225 Difference]: With dead ends: 255 [2020-10-28 14:26:17,374 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 14:26:17,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 14:26:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-28 14:26:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 14:26:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-10-28 14:26:17,446 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 29 [2020-10-28 14:26:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:17,446 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-10-28 14:26:17,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-10-28 14:26:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 14:26:17,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:17,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:26:17,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:17,449 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:17,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1297905485, now seen corresponding path program 1 times [2020-10-28 14:26:17,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:17,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617620708] [2020-10-28 14:26:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:17,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:17,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 14:26:17,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 14:26:17,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:17,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:26:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:26:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:26:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:17,945 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 14:26:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:17,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:17,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:17,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:17,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:26:17,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:17,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:17,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:18,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:18,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:26:18,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:26:18,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:18,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:26:18,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 14:26:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:18,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:18,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:26:18,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:18,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 14:26:18,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:18,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:18,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:26:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:18,164 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 14:26:18,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617620708] [2020-10-28 14:26:18,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:18,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:26:18,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474419293] [2020-10-28 14:26:18,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:26:18,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:18,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:26:18,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:18,169 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 5 states. [2020-10-28 14:26:18,337 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:26:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:19,083 INFO L93 Difference]: Finished difference Result 227 states and 308 transitions. [2020-10-28 14:26:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:26:19,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-28 14:26:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:19,089 INFO L225 Difference]: With dead ends: 227 [2020-10-28 14:26:19,089 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 14:26:19,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:26:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 14:26:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-28 14:26:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 14:26:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 165 transitions. [2020-10-28 14:26:19,115 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 165 transitions. Word has length 32 [2020-10-28 14:26:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:19,115 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 165 transitions. [2020-10-28 14:26:19,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:26:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 165 transitions. [2020-10-28 14:26:19,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 14:26:19,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:19,117 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, 1] [2020-10-28 14:26:19,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:19,118 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:19,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:19,118 INFO L82 PathProgramCache]: Analyzing trace with hash -665724313, now seen corresponding path program 1 times [2020-10-28 14:26:19,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:19,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100147157] [2020-10-28 14:26:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:19,217 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:19,217 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:19,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:26:19,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:19 BoogieIcfgContainer [2020-10-28 14:26:19,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:19,256 INFO L168 Benchmark]: Toolchain (without parser) took 6198.83 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 125.5 MB in the beginning and 104.6 MB in the end (delta: 20.9 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:19,257 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 123.7 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:19,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.33 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 109.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:19,261 INFO L168 Benchmark]: Boogie Preprocessor took 143.40 ms. Allocated memory is still 151.0 MB. Free memory was 109.0 MB in the beginning and 105.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:19,265 INFO L168 Benchmark]: RCFGBuilder took 1012.41 ms. Allocated memory is still 151.0 MB. Free memory was 105.6 MB in the beginning and 87.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:19,267 INFO L168 Benchmark]: TraceAbstraction took 4453.73 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 86.9 MB in the beginning and 104.6 MB in the end (delta: -17.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:19,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 123.7 MB in the end (delta: 81.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 569.33 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 109.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 143.40 ms. Allocated memory is still 151.0 MB. Free memory was 109.0 MB in the beginning and 105.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1012.41 ms. Allocated memory is still 151.0 MB. Free memory was 105.6 MB in the beginning and 87.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4453.73 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 86.9 MB in the beginning and 104.6 MB in the end (delta: -17.7 MB). Peak memory consumption was 23.2 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 299. 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; [L291] double x = 1.0 / 0.0; [L292] double y = __VERIFIER_nondet_double(); [L294] 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); [L294] RET, EXPR isinf_double(x) [L294] EXPR isinf_double(x) && isfinite_double(y) [L294] 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); [L294] RET, EXPR isfinite_double(y) [L294] EXPR isinf_double(x) && isfinite_double(y) [L294] COND TRUE isinf_double(x) && isfinite_double(y) && y < 0.0 [L296] 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; [L296] RET, EXPR __ieee754_atan2(y, x) [L296] double res = __ieee754_atan2(y, x); [L299] EXPR res == -0.0 && __signbit_double(res) == 1 [L299] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L300] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0683a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 324 SDtfs, 32 SDslu, 438 SDs, 0 SdLazy, 341 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 7440 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...