/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_0970a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:42,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:42,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:43,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:43,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:43,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:43,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:43,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:43,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:43,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:43,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:43,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:43,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:43,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:43,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:43,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:43,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:43,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:43,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:43,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:43,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:43,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:43,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:43,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:43,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:43,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:43,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:43,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:43,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:43,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:43,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:43,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:43,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:43,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:43,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:43,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:43,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:43,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:43,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:43,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:43,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:43,103 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 14:26:43,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:43,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:43,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:43,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:43,158 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:43,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:43,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:43,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:43,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:43,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:43,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:43,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:43,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:43,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:43,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:43,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:43,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:43,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:43,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:43,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:43,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:43,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:43,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:43,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:43,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:43,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:43,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:43,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:43,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:43,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:43,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:43,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:43,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:43,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:43,641 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:43,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0970a.c [2020-10-28 14:26:43,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeb18970b/da27dbf6f1ee49dc9f15b6103417da0c/FLAG3aa579307 [2020-10-28 14:26:44,458 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:44,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0970a.c [2020-10-28 14:26:44,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeb18970b/da27dbf6f1ee49dc9f15b6103417da0c/FLAG3aa579307 [2020-10-28 14:26:44,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aeb18970b/da27dbf6f1ee49dc9f15b6103417da0c [2020-10-28 14:26:44,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:44,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:44,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:44,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:44,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:44,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:44" (1/1) ... [2020-10-28 14:26:44,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4573c58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:44, skipping insertion in model container [2020-10-28 14:26:44,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:44" (1/1) ... [2020-10-28 14:26:44,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:44,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:45,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:45,167 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:45,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:45,242 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:45,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45 WrapperNode [2020-10-28 14:26:45,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:45,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:45,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:45,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:45,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (1/1) ... [2020-10-28 14:26:45,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (1/1) ... [2020-10-28 14:26:45,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (1/1) ... [2020-10-28 14:26:45,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (1/1) ... [2020-10-28 14:26:45,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (1/1) ... [2020-10-28 14:26:45,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (1/1) ... [2020-10-28 14:26:45,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (1/1) ... [2020-10-28 14:26:45,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:45,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:45,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:45,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:45,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (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 14:26:45,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2020-10-28 14:26:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10 [2020-10-28 14:26:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-28 14:26:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-28 14:26:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:26:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2020-10-28 14:26:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10 [2020-10-28 14:26:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-28 14:26:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-28 14:26:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:46,266 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:46,266 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:26:46,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:46 BoogieIcfgContainer [2020-10-28 14:26:46,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:46,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:46,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:46,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:46,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:44" (1/3) ... [2020-10-28 14:26:46,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558ef29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:46, skipping insertion in model container [2020-10-28 14:26:46,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:45" (2/3) ... [2020-10-28 14:26:46,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558ef29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:46, skipping insertion in model container [2020-10-28 14:26:46,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:46" (3/3) ... [2020-10-28 14:26:46,281 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2020-10-28 14:26:46,297 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:46,304 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:46,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:46,367 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:46,368 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:46,368 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:46,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:46,368 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:46,368 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:46,368 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:46,369 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-28 14:26:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:26:46,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:46,403 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] [2020-10-28 14:26:46,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash -78043261, now seen corresponding path program 1 times [2020-10-28 14:26:46,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:46,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986422108] [2020-10-28 14:26:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:46,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:46,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 14:26:46,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-28 14:26:46,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:46,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:26:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:26:47,125 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:26:47,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:47,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:47,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:47,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:26:47,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:47,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:26:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:47,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:47,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:26:47,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:26:47,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:47,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:26:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:47,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:47,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:26:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:47,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:47,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:26:47,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:47,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:26:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:47,220 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 14:26:47,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986422108] [2020-10-28 14:26:47,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:47,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:47,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177186064] [2020-10-28 14:26:47,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:47,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:47,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:47,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:47,251 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-10-28 14:26:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:47,663 INFO L93 Difference]: Finished difference Result 139 states and 206 transitions. [2020-10-28 14:26:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:47,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 14:26:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:47,677 INFO L225 Difference]: With dead ends: 139 [2020-10-28 14:26:47,677 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 14:26:47,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 14:26:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-10-28 14:26:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 14:26:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-10-28 14:26:47,740 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 25 [2020-10-28 14:26:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:47,741 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-10-28 14:26:47,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-10-28 14:26:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:26:47,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:47,743 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] [2020-10-28 14:26:47,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:47,743 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:47,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:47,744 INFO L82 PathProgramCache]: Analyzing trace with hash -758356752, now seen corresponding path program 1 times [2020-10-28 14:26:47,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:47,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771977070] [2020-10-28 14:26:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:47,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:47,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 14:26:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 14:26:47,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:47,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:26:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:26:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:26:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:48,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:48,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:48,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:48,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:48,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:26:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:48,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:26:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:48,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:48,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:26:48,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:48,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:26:48,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:48,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 14:26:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:48,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 14:26:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:48,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:26:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:48,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:26:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:48,121 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 14:26:48,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771977070] [2020-10-28 14:26:48,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:48,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:26:48,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414091551] [2020-10-28 14:26:48,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:26:48,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:48,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:26:48,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:48,125 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states. [2020-10-28 14:26:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:48,535 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2020-10-28 14:26:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:26:48,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-28 14:26:48,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:48,537 INFO L225 Difference]: With dead ends: 115 [2020-10-28 14:26:48,537 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 14:26:48,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:26:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 14:26:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-28 14:26:48,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 14:26:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2020-10-28 14:26:48,552 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 26 [2020-10-28 14:26:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:48,552 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2020-10-28 14:26:48,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:26:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2020-10-28 14:26:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 14:26:48,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:48,554 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] [2020-10-28 14:26:48,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:48,554 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:48,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash 427119279, now seen corresponding path program 1 times [2020-10-28 14:26:48,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:48,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684792736] [2020-10-28 14:26:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:48,593 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:48,593 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:48,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:26:48,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:48 BoogieIcfgContainer [2020-10-28 14:26:48,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:48,617 INFO L168 Benchmark]: Toolchain (without parser) took 3794.29 ms. Allocated memory was 125.8 MB in the beginning and 173.0 MB in the end (delta: 47.2 MB). Free memory was 101.5 MB in the beginning and 123.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:48,618 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 125.8 MB. Free memory is still 87.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:48,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.43 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 87.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:48,620 INFO L168 Benchmark]: Boogie Preprocessor took 122.32 ms. Allocated memory is still 125.8 MB. Free memory was 87.5 MB in the beginning and 85.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:48,621 INFO L168 Benchmark]: RCFGBuilder took 900.75 ms. Allocated memory was 125.8 MB in the beginning and 173.0 MB in the end (delta: 47.2 MB). Free memory was 85.1 MB in the beginning and 133.5 MB in the end (delta: -48.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:48,621 INFO L168 Benchmark]: TraceAbstraction took 2343.27 ms. Allocated memory is still 173.0 MB. Free memory was 133.4 MB in the beginning and 123.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:48,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 125.8 MB. Free memory is still 87.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 410.43 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 87.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 122.32 ms. Allocated memory is still 125.8 MB. Free memory was 87.5 MB in the beginning and 85.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 900.75 ms. Allocated memory was 125.8 MB in the beginning and 173.0 MB in the end (delta: 47.2 MB). Free memory was 85.1 MB in the beginning and 133.5 MB in the end (delta: -48.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2343.27 ms. Allocated memory is still 173.0 MB. Free memory was 133.4 MB in the beginning and 123.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 134, overapproximation of bitwiseAnd at line 172, overapproximation of someBinaryArithmeticDOUBLEoperation at line 135, overapproximation of someBinaryDOUBLEComparisonOperation at line 163. Possible FailurePath: [L19-L28] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L30] static const double zero = 0.0; [L113-L116] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L118] static const double zero_log10 = 0.0; [L182] double x = __VERIFIER_nondet_double(); [L184] x < 0 && isfinite_double(x) [L184] CALL, EXPR isfinite_double(x) [L166] __int32_t hx; [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L184] RET, EXPR isfinite_double(x) [L184] x < 0 && isfinite_double(x) [L184] COND TRUE x < 0 && isfinite_double(x) [L186] CALL, EXPR __ieee754_log10(x) [L121] double y, z; [L122] __int32_t i, k, hx; [L123] __uint32_t lx; [L126] ieee_double_shape_type ew_u; [L127] ew_u.value = (x) [L128] EXPR ew_u.parts.msw [L128] (hx) = ew_u.parts.msw [L129] EXPR ew_u.parts.lsw [L129] (lx) = ew_u.parts.lsw [L132] k = 0 [L133] COND TRUE hx < 0x00100000 [L134] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L135] return -two54_log10 / zero_log10; [L186] RET, EXPR __ieee754_log10(x) [L186] double res = __ieee754_log10(x); [L189] CALL, EXPR isnan_double(res) [L163] return x != x; [L189] RET, EXPR isnan_double(res) [L189] COND TRUE !isnan_double(res) [L190] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0970a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 159 SDtfs, 44 SDslu, 185 SDs, 0 SdLazy, 172 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 5636 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...