/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:57:53,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:57:53,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:57:53,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:57:53,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:57:53,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:57:53,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:57:53,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:57:53,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:57:53,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:57:53,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:57:53,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:57:53,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:57:53,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:57:53,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:57:53,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:57:53,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:57:53,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:57:53,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:57:53,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:57:53,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:57:53,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:57:53,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:57:53,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:57:53,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:57:53,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:57:53,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:57:53,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:57:53,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:57:53,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:57:53,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:57:53,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:57:53,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:57:53,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:57:53,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:57:53,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:57:53,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:57:53,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:57:53,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:57:53,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:57:53,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:57:53,601 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 [2020-09-25 09:57:53,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:57:53,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:57:53,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:57:53,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:57:53,652 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:57:53,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:57:53,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:57:53,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:57:53,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:57:53,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:57:53,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:57:53,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:57:53,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:57:53,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:57:53,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:57:53,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:57:53,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:57:53,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:57:53,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:57:53,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:57:53,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:57:53,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:57:53,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:57:53,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:57:53,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:57:53,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:57:53,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:57:53,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:57:53,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:57:53,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 09:57:54,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:57:54,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:57:54,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:57:54,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:57:54,153 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:57:54,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-09-25 09:57:54,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3cbf2e5/9a3face4cab34ce29b2c3d30e5dfbfc7/FLAGe8cf6cb2f [2020-09-25 09:57:54,810 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:57:54,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-09-25 09:57:54,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3cbf2e5/9a3face4cab34ce29b2c3d30e5dfbfc7/FLAGe8cf6cb2f [2020-09-25 09:57:55,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3cbf2e5/9a3face4cab34ce29b2c3d30e5dfbfc7 [2020-09-25 09:57:55,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:57:55,169 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:57:55,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:57:55,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:57:55,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:57:55,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3058fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55, skipping insertion in model container [2020-09-25 09:57:55,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:57:55,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:57:55,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:57:55,541 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:57:55,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:57:55,604 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:57:55,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55 WrapperNode [2020-09-25 09:57:55,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:57:55,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:57:55,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:57:55,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:57:55,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (1/1) ... [2020-09-25 09:57:55,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:57:55,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:57:55,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:57:55,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:57:55,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (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 [2020-09-25 09:57:55,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:57:55,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:57:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 09:57:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 09:57:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-25 09:57:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 09:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 09:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 09:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 09:57:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 09:57:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 09:57:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 09:57:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-25 09:57:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 09:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 09:57:56,251 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:57:56,251 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 09:57:56,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:57:56 BoogieIcfgContainer [2020-09-25 09:57:56,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:57:56,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:57:56,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:57:56,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:57:56,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:57:55" (1/3) ... [2020-09-25 09:57:56,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f710d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:57:56, skipping insertion in model container [2020-09-25 09:57:56,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:55" (2/3) ... [2020-09-25 09:57:56,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f710d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:57:56, skipping insertion in model container [2020-09-25 09:57:56,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:57:56" (3/3) ... [2020-09-25 09:57:56,267 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-09-25 09:57:56,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:57:56,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:57:56,311 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:57:56,338 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:57:56,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:57:56,339 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:57:56,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:57:56,339 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:57:56,339 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:57:56,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:57:56,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:57:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-25 09:57:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 09:57:56,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:57:56,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:57:56,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:57:56,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:57:56,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1497092675, now seen corresponding path program 1 times [2020-09-25 09:57:56,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:57:56,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911791737] [2020-09-25 09:57:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:57:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:56,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:56,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:57:56,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:57:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-25 09:57:56,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:56,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 09:57:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:57:56,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:57:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:57:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:57,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:57,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:57,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:57:57,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:57:57,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:57,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:57:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:57,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:57:57,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:57:57,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:57,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 09:57:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:57,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:57:57,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:57:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:57:57,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:57,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:57:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:57:57,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:57,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:57:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:57,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:57:57,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:57:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:57:57,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:57,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:57:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:57:57,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911791737] [2020-09-25 09:57:57,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:57:57,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:57:57,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604637952] [2020-09-25 09:57:57,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:57:57,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:57:57,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:57:57,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:57:57,294 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 6 states. [2020-09-25 09:57:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:57:57,674 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2020-09-25 09:57:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:57:57,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-09-25 09:57:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:57:57,692 INFO L225 Difference]: With dead ends: 146 [2020-09-25 09:57:57,692 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 09:57:57,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:57:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 09:57:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-09-25 09:57:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 09:57:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-25 09:57:57,765 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 40 [2020-09-25 09:57:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:57:57,766 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-25 09:57:57,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:57:57,767 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-25 09:57:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 09:57:57,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:57:57,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:57:57,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:57:57,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:57:57,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:57:57,772 INFO L82 PathProgramCache]: Analyzing trace with hash 358345182, now seen corresponding path program 1 times [2020-09-25 09:57:57,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:57:57,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780294555] [2020-09-25 09:57:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:57:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:57,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 09:57:58,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 09:57:58,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 09:57:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:57:58,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:58,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:57:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:57:58,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:57:58,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:58,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:58,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:57:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:57:58,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:57:58,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 09:57:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 09:57:58,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 09:57:58,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 09:57:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:57:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:57:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:57:58,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 09:57:58,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:57:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:57:58,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780294555] [2020-09-25 09:57:58,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:57:58,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:57:58,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666894028] [2020-09-25 09:57:58,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:57:58,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:57:58,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:57:58,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:57:58,502 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-25 09:57:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:57:58,766 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-25 09:57:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:57:58,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-09-25 09:57:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:57:58,770 INFO L225 Difference]: With dead ends: 92 [2020-09-25 09:57:58,771 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 09:57:58,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:57:58,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 09:57:58,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-25 09:57:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 09:57:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-25 09:57:58,803 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 57 [2020-09-25 09:57:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:57:58,805 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-25 09:57:58,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:57:58,805 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-25 09:57:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 09:57:58,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:57:58,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:57:58,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:57:58,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:57:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:57:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1239578082, now seen corresponding path program 1 times [2020-09-25 09:57:58,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:57:58,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486137802] [2020-09-25 09:57:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:57:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 09:57:58,855 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 09:57:58,855 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 09:57:58,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:57:58,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:57:58 BoogieIcfgContainer [2020-09-25 09:57:58,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:57:58,898 INFO L168 Benchmark]: Toolchain (without parser) took 3733.48 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 101.8 MB in the beginning and 96.4 MB in the end (delta: 5.3 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:58,899 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 09:57:58,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.46 ms. Allocated memory is still 140.0 MB. Free memory was 101.1 MB in the beginning and 90.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:58,904 INFO L168 Benchmark]: Boogie Preprocessor took 141.21 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 90.4 MB in the beginning and 180.3 MB in the end (delta: -89.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:58,905 INFO L168 Benchmark]: RCFGBuilder took 509.29 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 157.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:58,906 INFO L168 Benchmark]: TraceAbstraction took 2635.22 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 157.2 MB in the beginning and 96.4 MB in the end (delta: 60.7 MB). Peak memory consumption was 94.3 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:58,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 435.46 ms. Allocated memory is still 140.0 MB. Free memory was 101.1 MB in the beginning and 90.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.21 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 90.4 MB in the beginning and 180.3 MB in the end (delta: -89.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 509.29 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 157.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2635.22 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 157.2 MB in the beginning and 96.4 MB in the end (delta: 60.7 MB). Peak memory consumption was 94.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L62] CALL, EXPR isnan_double(x) [L16] return x != x; [L62] RET, EXPR isnan_double(x) [L62] COND TRUE !isnan_double(x) [L64] CALL, EXPR fmin_double(x, y) [L45] CALL, EXPR __fpclassify_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] RET, EXPR __fpclassify_double(x) [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] RET, EXPR fmin_double(x, y) [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 159 SDtfs, 68 SDslu, 337 SDs, 0 SdLazy, 252 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 8552 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...