/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_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:57:54,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:57:54,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:57:54,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:57:54,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:57:54,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:57:54,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:57:54,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:57:54,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:57:54,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:57:54,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:57:54,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:57:54,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:57:54,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:57:54,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:57:54,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:57:54,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:57:54,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:57:54,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:57:54,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:57:54,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:57:54,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:57:54,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:57:54,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:57:54,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:57:54,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:57:54,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:57:54,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:57:54,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:57:54,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:57:54,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:57:54,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:57:54,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:57:54,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:57:54,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:57:54,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:57:54,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:57:54,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:57:54,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:57:54,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:57:54,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:57:54,846 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 09:57:54,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:57:54,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:57:54,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:57:54,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:57:54,899 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:57:54,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:57:54,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:57:54,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:57:54,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:57:54,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:57:54,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:57:54,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:57:54,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:57:54,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:57:54,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:57:54,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:57:54,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:57:54,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:57:54,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:57:54,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:57:54,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:57:54,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:57:54,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:57:54,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:57:54,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:57:54,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:57:54,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:57:54,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:57:54,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:57:54,907 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 09:57:55,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:57:55,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:57:55,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:57:55,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:57:55,406 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:57:55,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-25 09:57:55,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb6008fe8/c487d0de586f4041b85f0d5d98b1d2af/FLAGeec22bab2 [2020-09-25 09:57:56,029 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:57:56,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-25 09:57:56,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb6008fe8/c487d0de586f4041b85f0d5d98b1d2af/FLAGeec22bab2 [2020-09-25 09:57:56,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb6008fe8/c487d0de586f4041b85f0d5d98b1d2af [2020-09-25 09:57:56,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:57:56,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:57:56,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:57:56,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:57:56,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:57:56,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de5375c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56, skipping insertion in model container [2020-09-25 09:57:56,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:57:56,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:57:56,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:57:56,679 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:57:56,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:57:56,836 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:57:56,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56 WrapperNode [2020-09-25 09:57:56,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:57:56,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:57:56,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:57:56,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:57:56,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (1/1) ... [2020-09-25 09:57:56,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:57:56,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:57:56,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:57:56,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:57:56,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (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 09:57:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:57:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:57:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 09:57:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 09:57:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-25 09:57:56,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:57:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:57:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 09:57:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 09:57:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 09:57:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 09:57:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 09:57:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 09:57:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 09:57:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-25 09:57:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:57:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:57:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:57:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 09:57:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 09:57:57,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:57:57,407 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 09:57:57,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:57:57 BoogieIcfgContainer [2020-09-25 09:57:57,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:57:57,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:57:57,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:57:57,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:57:57,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:57:56" (1/3) ... [2020-09-25 09:57:57,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694ccd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:57:57, skipping insertion in model container [2020-09-25 09:57:57,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:56" (2/3) ... [2020-09-25 09:57:57,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694ccd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:57:57, skipping insertion in model container [2020-09-25 09:57:57,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:57:57" (3/3) ... [2020-09-25 09:57:57,423 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-09-25 09:57:57,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:57:57,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:57:57,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:57:57,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:57:57,500 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:57:57,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:57:57,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:57:57,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:57:57,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:57:57,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:57:57,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:57:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-25 09:57:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 09:57:57,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:57:57,537 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] [2020-09-25 09:57:57,538 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:57:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:57:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash -262911209, now seen corresponding path program 1 times [2020-09-25 09:57:57,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:57:57,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808204783] [2020-09-25 09:57:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:57:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 09:57:58,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:57:58,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 09:57:58,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 09:57:58,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:57:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 09:57:58,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:57:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:57:58,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:57:58,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:58,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 09:57:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:57:58,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:57:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 09:57:58,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:57:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:57:58,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:57:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:57:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:57:58,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:57:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:57:58,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:57:58,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 09:57:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:58,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:57:58,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:57:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:58,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:57:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:58,395 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 09:57:58,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808204783] [2020-09-25 09:57:58,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:57:58,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:57:58,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875432048] [2020-09-25 09:57:58,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:57:58,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:57:58,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:57:58,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:57:58,431 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-09-25 09:57:58,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:57:58,760 INFO L93 Difference]: Finished difference Result 149 states and 172 transitions. [2020-09-25 09:57:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:57:58,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 09:57:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:57:58,779 INFO L225 Difference]: With dead ends: 149 [2020-09-25 09:57:58,779 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 09:57:58,785 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 09:57:58,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 09:57:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-09-25 09:57:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 09:57:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 09:57:58,856 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 38 [2020-09-25 09:57:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:57:58,857 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 09:57:58,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:57:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 09:57:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 09:57:58,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:57:58,861 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] [2020-09-25 09:57:58,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:57:58,862 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:57:58,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:57:58,863 INFO L82 PathProgramCache]: Analyzing trace with hash 116411547, now seen corresponding path program 1 times [2020-09-25 09:57:58,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:57:58,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027417854] [2020-09-25 09:57:58,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:57:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:59,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:59,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 09:57:59,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 09:57:59,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:59,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:57:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:57:59,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:59,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:57:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:59,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:59,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:57:59,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:57:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:59,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:59,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 09:57:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:59,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:59,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 09:57:59,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 09:57:59,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:59,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 09:57:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:57:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 09:57:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:59,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:59,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:57:59,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:59,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 09:57:59,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:59,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:59,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:57:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:57:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:59,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:57:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:59,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:59,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:57:59,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:59,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:57:59,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:59,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:57:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:59,601 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 09:57:59,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027417854] [2020-09-25 09:57:59,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:57:59,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:57:59,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992198083] [2020-09-25 09:57:59,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:57:59,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:57:59,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:57:59,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:57:59,606 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 09:57:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:57:59,844 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 09:57:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:57:59,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 09:57:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:57:59,847 INFO L225 Difference]: With dead ends: 97 [2020-09-25 09:57:59,847 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 09:57:59,848 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 09:57:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 09:57:59,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 09:57:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 09:57:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 09:57:59,861 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 55 [2020-09-25 09:57:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:57:59,862 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 09:57:59,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:57:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 09:57:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 09:57:59,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:57:59,865 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] [2020-09-25 09:57:59,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:57:59,865 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:57:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:57:59,866 INFO L82 PathProgramCache]: Analyzing trace with hash -278535077, now seen corresponding path program 1 times [2020-09-25 09:57:59,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:57:59,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157815844] [2020-09-25 09:57:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:57:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 09:57:59,889 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 09:57:59,889 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 09:57:59,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:57:59,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:57:59 BoogieIcfgContainer [2020-09-25 09:57:59,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:57:59,921 INFO L168 Benchmark]: Toolchain (without parser) took 3529.57 ms. Allocated memory was 147.8 MB in the beginning and 233.3 MB in the end (delta: 85.5 MB). Free memory was 103.0 MB in the beginning and 93.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 95.4 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:59,923 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 120.8 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-25 09:57:59,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.14 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.2 MB in the beginning and 183.1 MB in the end (delta: -80.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:59,925 INFO L168 Benchmark]: Boogie Preprocessor took 61.83 ms. Allocated memory is still 204.5 MB. Free memory was 183.1 MB in the beginning and 180.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:59,926 INFO L168 Benchmark]: RCFGBuilder took 512.89 ms. Allocated memory is still 204.5 MB. Free memory was 180.9 MB in the beginning and 159.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:59,927 INFO L168 Benchmark]: TraceAbstraction took 2503.06 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 159.0 MB in the beginning and 93.1 MB in the end (delta: 65.9 MB). Peak memory consumption was 94.7 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:59,931 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 147.8 MB. Free memory was 121.2 MB in the beginning and 120.8 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 442.14 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.2 MB in the beginning and 183.1 MB in the end (delta: -80.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.83 ms. Allocated memory is still 204.5 MB. Free memory was 183.1 MB in the beginning and 180.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 512.89 ms. Allocated memory is still 204.5 MB. Free memory was 180.9 MB in the beginning and 159.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2503.06 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 159.0 MB in the beginning and 93.1 MB in the end (delta: 65.9 MB). Peak memory consumption was 94.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L69] RET, EXPR fmax_double(x, y) [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) [L16] return x != x; [L71] RET, EXPR isnan_double(res) [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 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: 162 SDtfs, 44 SDslu, 375 SDs, 0 SdLazy, 239 SolverSat, 20 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=79occurred 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, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 8016 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...