/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1211a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:02:34,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:02:34,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:02:34,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:02:34,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:02:34,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:02:34,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:02:34,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:02:34,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:02:34,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:02:34,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:02:34,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:02:34,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:02:34,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:02:34,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:02:34,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:02:34,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:02:34,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:02:34,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:02:34,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:02:34,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:02:34,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:02:34,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:02:34,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:02:34,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:02:34,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:02:34,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:02:34,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:02:34,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:02:34,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:02:34,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:02:34,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:02:34,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:02:34,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:02:34,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:02:34,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:02:34,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:02:34,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:02:34,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:02:34,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:02:34,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:02:34,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:02:34,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:02:34,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:02:34,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:02:34,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:02:34,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:02:34,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:02:34,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:02:34,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:02:34,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:02:34,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:02:34,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:02:34,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:02:34,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:02:34,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:02:34,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:02:34,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:02:34,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:02:34,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:02:34,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:02:34,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:02:34,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:02:34,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:34,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:02:34,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:02:34,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:02:34,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:02:34,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:02:34,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:02:34,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:02:34,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:02:34,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:02:34,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:02:34,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:02:34,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:02:34,928 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:02:34,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1211a.c [2020-10-27 01:02:35,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea79821b1/4f54948db75645c296ead233d2c69f4c/FLAG6bed3a818 [2020-10-27 01:02:35,825 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:02:35,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1211a.c [2020-10-27 01:02:35,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea79821b1/4f54948db75645c296ead233d2c69f4c/FLAG6bed3a818 [2020-10-27 01:02:36,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea79821b1/4f54948db75645c296ead233d2c69f4c [2020-10-27 01:02:36,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:02:36,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:02:36,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:36,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:02:36,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:02:36,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3f8f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36, skipping insertion in model container [2020-10-27 01:02:36,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:02:36,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:02:36,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:36,546 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:02:36,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:36,620 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:02:36,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36 WrapperNode [2020-10-27 01:02:36,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:36,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:02:36,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:02:36,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:02:36,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (1/1) ... [2020-10-27 01:02:36,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:02:36,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:02:36,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:02:36,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:02:36,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:02:36,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:02:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:02:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-27 01:02:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-10-27 01:02:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-27 01:02:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-27 01:02:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:02:36,810 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:02:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:02:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:02:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:02:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 01:02:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-27 01:02:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-10-27 01:02:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:02:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:02:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:02:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:02:36,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:02:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-27 01:02:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-27 01:02:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:02:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:02:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:02:36,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:02:36,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:02:37,603 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:02:37,604 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-27 01:02:37,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:37 BoogieIcfgContainer [2020-10-27 01:02:37,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:02:37,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:02:37,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:02:37,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:02:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:02:36" (1/3) ... [2020-10-27 01:02:37,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718722f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:37, skipping insertion in model container [2020-10-27 01:02:37,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:36" (2/3) ... [2020-10-27 01:02:37,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718722f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:37, skipping insertion in model container [2020-10-27 01:02:37,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:37" (3/3) ... [2020-10-27 01:02:37,620 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1211a.c [2020-10-27 01:02:37,634 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:02:37,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:02:37,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:02:37,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:02:37,702 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:02:37,702 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:02:37,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:02:37,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:02:37,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:02:37,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:02:37,703 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:02:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-27 01:02:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 01:02:37,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:37,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:02:37,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:37,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:37,752 INFO L82 PathProgramCache]: Analyzing trace with hash 463858098, now seen corresponding path program 1 times [2020-10-27 01:02:37,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:37,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993246645] [2020-10-27 01:02:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:37,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:38,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:02:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:02:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-27 01:02:38,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:02:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:02:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:02:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:38,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:02:38,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:02:38,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:02:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:38,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:02:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:02:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:38,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:38,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:02:38,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:02:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:02:38,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:02:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:38,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:38,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 01:02:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:38,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:38,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:02:38,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:02:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:02:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:02:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:02:38,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993246645] [2020-10-27 01:02:38,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:02:38,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:02:38,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471603017] [2020-10-27 01:02:38,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:02:38,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:02:38,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:02:38,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:02:38,836 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-10-27 01:02:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:02:39,176 INFO L93 Difference]: Finished difference Result 135 states and 200 transitions. [2020-10-27 01:02:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:02:39,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-27 01:02:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:02:39,188 INFO L225 Difference]: With dead ends: 135 [2020-10-27 01:02:39,188 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 01:02:39,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:02:39,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 01:02:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-27 01:02:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 01:02:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-10-27 01:02:39,245 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 28 [2020-10-27 01:02:39,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:02:39,245 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-10-27 01:02:39,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:02:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-10-27 01:02:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 01:02:39,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:39,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:02:39,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:02:39,248 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:39,249 INFO L82 PathProgramCache]: Analyzing trace with hash -858312245, now seen corresponding path program 1 times [2020-10-27 01:02:39,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:39,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626075717] [2020-10-27 01:02:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:39,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:39,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 01:02:39,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:39,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-27 01:02:39,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:39,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:02:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 01:02:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:02:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:39,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:02:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:39,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:39,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:39,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:02:39,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:39,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 01:02:39,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:02:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:39,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:02:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:39,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:39,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 01:02:39,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:02:39,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:02:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 01:02:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:39,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:39,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:02:39,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:39,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 01:02:39,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:39,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:02:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:02:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:02:39,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626075717] [2020-10-27 01:02:39,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:02:39,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:02:39,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448730529] [2020-10-27 01:02:39,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:02:39,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:02:39,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:02:39,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:02:39,731 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 5 states. [2020-10-27 01:02:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:02:39,980 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-10-27 01:02:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:02:39,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-27 01:02:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:02:39,983 INFO L225 Difference]: With dead ends: 70 [2020-10-27 01:02:39,983 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 01:02:39,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:02:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 01:02:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-27 01:02:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 01:02:39,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-10-27 01:02:39,996 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 31 [2020-10-27 01:02:39,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:02:39,997 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-10-27 01:02:39,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:02:39,997 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-10-27 01:02:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 01:02:39,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:39,999 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] [2020-10-27 01:02:39,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:02:40,000 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:40,000 INFO L82 PathProgramCache]: Analyzing trace with hash -531598764, now seen corresponding path program 1 times [2020-10-27 01:02:40,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:40,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630732404] [2020-10-27 01:02:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:02:40,051 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:02:40,051 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:02:40,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:02:40,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:02:40 BoogieIcfgContainer [2020-10-27 01:02:40,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:02:40,088 INFO L168 Benchmark]: Toolchain (without parser) took 3893.10 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.3 MB in the beginning and 151.0 MB in the end (delta: -21.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:40,089 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 100.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:02:40,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.58 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 116.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:40,091 INFO L168 Benchmark]: Boogie Preprocessor took 75.05 ms. Allocated memory is still 153.1 MB. Free memory was 116.0 MB in the beginning and 113.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:40,093 INFO L168 Benchmark]: RCFGBuilder took 908.75 ms. Allocated memory is still 153.1 MB. Free memory was 113.4 MB in the beginning and 110.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:40,094 INFO L168 Benchmark]: TraceAbstraction took 2472.19 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 109.6 MB in the beginning and 151.0 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:02:40,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 100.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 418.58 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 116.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.05 ms. Allocated memory is still 153.1 MB. Free memory was 116.0 MB in the beginning and 113.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 908.75 ms. Allocated memory is still 153.1 MB. Free memory was 113.4 MB in the beginning and 110.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2472.19 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 109.6 MB in the beginning and 151.0 MB in the end (delta: -41.4 MB). There was no memory consumed. 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 122, overapproximation of someBinaryArithmeticDOUBLEoperation at line 146, overapproximation of bitwiseAnd at line 121, overapproximation of someBinaryDOUBLEComparisonOperation at line 151. Possible FailurePath: [L20] static const double one_modf = 1.0; [L146] double x = 1.0 / 0.0; [L147] double iptr = __VERIFIER_nondet_double(); [L148] CALL, EXPR modf_double(x, &iptr) [L23] __int32_t i0, i1, j0; [L24] __uint32_t i; [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (i0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (i1) = ew_u.parts.lsw [L31] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L32] COND TRUE j0 < 20 [L33] COND TRUE j0 < 0 [L35] ieee_double_shape_type iw_u; [L36] iw_u.parts.msw = (i0 & 0x80000000) [L37] iw_u.parts.lsw = (0) [L38] EXPR iw_u.value [L38] (*iptr) = iw_u.value [L40] return x; [L148] RET, EXPR modf_double(x, &iptr) [L148] double res = modf_double(x, &iptr); [L151] EXPR \read(iptr) [L151] CALL, EXPR isinf_double(iptr) [L114] __int32_t hx, lx; [L116] ieee_double_shape_type ew_u; [L117] ew_u.value = (x) [L118] EXPR ew_u.parts.msw [L118] (hx) = ew_u.parts.msw [L119] EXPR ew_u.parts.lsw [L119] (lx) = ew_u.parts.lsw [L121] hx &= 0x7fffffff [L122] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L123] hx = 0x7ff00000 - hx [L124] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L151] RET, EXPR isinf_double(iptr) [L151] isinf_double(iptr) && !(res == 0.0 && __signbit_double(res) == 0) [L151] EXPR res == 0.0 && __signbit_double(res) == 0 [L151] isinf_double(iptr) && !(res == 0.0 && __signbit_double(res) == 0) [L151] COND TRUE isinf_double(iptr) && !(res == 0.0 && __signbit_double(res) == 0) [L152] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1211a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 16 SDslu, 159 SDs, 0 SdLazy, 178 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 4908 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...