/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:01:58,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:01:58,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:01:58,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:01:58,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:01:58,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:01:58,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:01:58,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:01:58,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:01:58,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:01:58,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:01:58,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:01:58,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:01:58,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:01:58,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:01:58,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:01:58,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:01:58,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:01:58,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:01:58,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:01:58,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:01:58,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:01:58,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:01:58,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:01:58,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:01:58,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:01:58,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:01:58,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:01:58,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:01:58,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:01:58,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:01:58,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:01:58,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:01:58,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:01:58,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:01:58,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:01:58,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:01:58,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:01:58,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:01:58,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:01:58,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:01:58,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:01:58,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:01:58,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:01:58,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:01:58,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:01:58,925 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:01:58,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:01:58,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:01:58,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:01:58,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:01:58,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:01:58,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:01:58,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:01:58,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:01:58,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:01:58,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:01:58,929 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:01:58,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:01:58,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:01:58,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:01:58,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:01:58,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:01:58,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:01:58,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:01:58,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:01:58,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:01:58,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:01:58,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:01:58,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:01:58,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:01:58,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:01:59,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:01:59,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:01:59,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:01:59,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:01:59,439 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:01:59,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2020-10-27 15:01:59,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1393f181/eb1f4fc9f9a9440280d9cbcdd4cd5b6d/FLAGef31cf639 [2020-10-27 15:02:00,203 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:02:00,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2020-10-27 15:02:00,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1393f181/eb1f4fc9f9a9440280d9cbcdd4cd5b6d/FLAGef31cf639 [2020-10-27 15:02:00,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1393f181/eb1f4fc9f9a9440280d9cbcdd4cd5b6d [2020-10-27 15:02:00,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:02:00,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:02:00,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:02:00,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:02:00,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:02:00,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25876592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00, skipping insertion in model container [2020-10-27 15:02:00,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:02:00,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:02:00,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:02:00,756 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:02:00,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:02:00,831 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:02:00,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00 WrapperNode [2020-10-27 15:02:00,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:02:00,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:02:00,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:02:00,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:02:00,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (1/1) ... [2020-10-27 15:02:00,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:02:00,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:02:00,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:02:00,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:02:00,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:02:00,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:02:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:02:00,970 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:02:00,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 15:02:00,970 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-27 15:02:00,971 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-27 15:02:00,971 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-27 15:02:00,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:02:00,972 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:02:00,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:02:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:02:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:02:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 15:02:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 15:02:00,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 15:02:00,974 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-27 15:02:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-27 15:02:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-27 15:02:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:02:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:02:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:02:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:02:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:02:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:02:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:02:01,844 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:02:01,844 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 15:02:01,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:01 BoogieIcfgContainer [2020-10-27 15:02:01,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:02:01,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:02:01,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:02:01,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:02:01,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:02:00" (1/3) ... [2020-10-27 15:02:01,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b5628a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:01, skipping insertion in model container [2020-10-27 15:02:01,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:00" (2/3) ... [2020-10-27 15:02:01,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b5628a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:01, skipping insertion in model container [2020-10-27 15:02:01,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:01" (3/3) ... [2020-10-27 15:02:01,860 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2020-10-27 15:02:01,875 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:02:01,882 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:02:01,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:02:01,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:02:01,951 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:02:01,952 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:02:01,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:02:01,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:02:01,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:02:01,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:02:01,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:02:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-27 15:02:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 15:02:01,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:01,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:01,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:02,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1277715242, now seen corresponding path program 1 times [2020-10-27 15:02:02,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:02,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458485042] [2020-10-27 15:02:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:02,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:04,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:04,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 15:02:04,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:04,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2355 [2020-10-27 15:02:04,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:02:04,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:02:04,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:02:04,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:04,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:04,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:04,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:04,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:02:04,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:04,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:04,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:04,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:04,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:04,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:04,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:04,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:04,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:04,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:04,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:04,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:04,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:02:04,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:02:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:02:05,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458485042] [2020-10-27 15:02:05,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:02:05,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 15:02:05,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399469127] [2020-10-27 15:02:05,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:05,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:05,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:05,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:05,068 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 9 states. [2020-10-27 15:02:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:05,944 INFO L93 Difference]: Finished difference Result 137 states and 202 transitions. [2020-10-27 15:02:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:02:05,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-27 15:02:05,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:05,959 INFO L225 Difference]: With dead ends: 137 [2020-10-27 15:02:05,959 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 15:02:05,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:02:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 15:02:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2020-10-27 15:02:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 15:02:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2020-10-27 15:02:06,024 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 36 [2020-10-27 15:02:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:06,026 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2020-10-27 15:02:06,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:06,026 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2020-10-27 15:02:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 15:02:06,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:06,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:06,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:02:06,030 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:06,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:06,031 INFO L82 PathProgramCache]: Analyzing trace with hash 715079429, now seen corresponding path program 1 times [2020-10-27 15:02:06,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:06,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704753374] [2020-10-27 15:02:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:02:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-27 15:02:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:02:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:02:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 15:02:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:06,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:06,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:06,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:02:06,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:06,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:06,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:06,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:06,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:06,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:06,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:06,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:06,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:02:06,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:06,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:06,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:06,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:02:06,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:06,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:02:06,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704753374] [2020-10-27 15:02:06,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:06,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:02:06,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341368679] [2020-10-27 15:02:06,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:02:06,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:06,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:02:06,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:02:06,703 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand 10 states. [2020-10-27 15:02:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:07,680 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2020-10-27 15:02:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:02:07,681 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-27 15:02:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:07,684 INFO L225 Difference]: With dead ends: 133 [2020-10-27 15:02:07,684 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 15:02:07,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:02:07,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 15:02:07,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2020-10-27 15:02:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 15:02:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 114 transitions. [2020-10-27 15:02:07,707 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 114 transitions. Word has length 40 [2020-10-27 15:02:07,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:07,708 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 114 transitions. [2020-10-27 15:02:07,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:02:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions. [2020-10-27 15:02:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 15:02:07,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:07,710 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:07,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:02:07,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1804880505, now seen corresponding path program 1 times [2020-10-27 15:02:07,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:07,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862417305] [2020-10-27 15:02:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:08,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:02:08,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-27 15:02:08,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:02:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:02:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 15:02:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:08,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:08,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:08,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:08,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:08,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:08,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:08,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:08,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:08,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:08,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:08,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:08,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:02:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:08,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:08,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:08,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:02:08,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:02:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 15:02:08,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862417305] [2020-10-27 15:02:08,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:08,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 15:02:08,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111031740] [2020-10-27 15:02:08,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 15:02:08,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:08,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 15:02:08,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:02:08,499 INFO L87 Difference]: Start difference. First operand 86 states and 114 transitions. Second operand 13 states. [2020-10-27 15:02:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:09,984 INFO L93 Difference]: Finished difference Result 155 states and 208 transitions. [2020-10-27 15:02:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:02:09,985 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-27 15:02:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:09,988 INFO L225 Difference]: With dead ends: 155 [2020-10-27 15:02:09,989 INFO L226 Difference]: Without dead ends: 113 [2020-10-27 15:02:09,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-10-27 15:02:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-27 15:02:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2020-10-27 15:02:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 15:02:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 128 transitions. [2020-10-27 15:02:10,021 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 128 transitions. Word has length 40 [2020-10-27 15:02:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:10,021 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 128 transitions. [2020-10-27 15:02:10,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 15:02:10,022 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 128 transitions. [2020-10-27 15:02:10,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 15:02:10,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:10,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:10,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:02:10,024 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:10,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1823128637, now seen corresponding path program 1 times [2020-10-27 15:02:10,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:10,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282811943] [2020-10-27 15:02:10,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:10,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:02:10,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-27 15:02:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:02:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:02:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 15:02:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:10,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:10,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:10,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:10,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:10,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:10,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:10,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:10,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:10,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:10,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:10,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:10,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:02:10,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:10,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:10,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:10,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:10,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:02:10,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:10,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:02:10,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282811943] [2020-10-27 15:02:10,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:10,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:02:10,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336633165] [2020-10-27 15:02:10,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:02:10,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:10,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:02:10,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:02:10,479 INFO L87 Difference]: Start difference. First operand 97 states and 128 transitions. Second operand 10 states. [2020-10-27 15:02:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:11,418 INFO L93 Difference]: Finished difference Result 150 states and 194 transitions. [2020-10-27 15:02:11,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:02:11,419 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-27 15:02:11,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:11,421 INFO L225 Difference]: With dead ends: 150 [2020-10-27 15:02:11,421 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 15:02:11,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:02:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 15:02:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2020-10-27 15:02:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 15:02:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2020-10-27 15:02:11,443 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 40 [2020-10-27 15:02:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:11,443 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2020-10-27 15:02:11,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:02:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2020-10-27 15:02:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 15:02:11,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:11,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:11,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:02:11,446 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash -615141410, now seen corresponding path program 1 times [2020-10-27 15:02:11,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:11,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960346050] [2020-10-27 15:02:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:15,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:15,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 15:02:15,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4160 [2020-10-27 15:02:15,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 15:02:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:02:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:15,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:15,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:15,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:15,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:15,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:15,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:15,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:15,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:15,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:15,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:15,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:15,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:15,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:15,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:15,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:15,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:15,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 15:02:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:15,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:15,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:15,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:02:15,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:15,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 15:02:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 15:02:15,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960346050] [2020-10-27 15:02:15,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:15,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:02:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081311866] [2020-10-27 15:02:15,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:15,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:15,874 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand 9 states. [2020-10-27 15:02:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:17,055 INFO L93 Difference]: Finished difference Result 151 states and 196 transitions. [2020-10-27 15:02:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:02:17,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-27 15:02:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:17,059 INFO L225 Difference]: With dead ends: 151 [2020-10-27 15:02:17,059 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 15:02:17,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:02:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 15:02:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 103. [2020-10-27 15:02:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 15:02:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2020-10-27 15:02:17,082 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 44 [2020-10-27 15:02:17,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:17,084 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2020-10-27 15:02:17,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2020-10-27 15:02:17,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 15:02:17,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:17,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:17,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:02:17,087 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:17,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1149769610, now seen corresponding path program 2 times [2020-10-27 15:02:17,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:17,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191083580] [2020-10-27 15:02:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:17,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:17,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 15:02:17,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:17,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 15:02:17,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 15:02:17,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 15:02:17,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:17,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:17,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:17,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:17,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:17,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:17,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:17,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:17,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:17,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:17,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:17,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:17,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:17,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:17,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:17,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:17,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:02:17,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:02:17,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:17,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 15:02:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:17,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:17,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:17,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:02:17,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 15:02:17,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191083580] [2020-10-27 15:02:17,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:17,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:02:17,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014827161] [2020-10-27 15:02:17,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:17,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:17,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:17,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:17,524 INFO L87 Difference]: Start difference. First operand 103 states and 131 transitions. Second operand 9 states. [2020-10-27 15:02:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:18,448 INFO L93 Difference]: Finished difference Result 175 states and 228 transitions. [2020-10-27 15:02:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:02:18,449 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-27 15:02:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:18,454 INFO L225 Difference]: With dead ends: 175 [2020-10-27 15:02:18,454 INFO L226 Difference]: Without dead ends: 142 [2020-10-27 15:02:18,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:02:18,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-27 15:02:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2020-10-27 15:02:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 15:02:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2020-10-27 15:02:18,511 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 44 [2020-10-27 15:02:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:18,514 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2020-10-27 15:02:18,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2020-10-27 15:02:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 15:02:18,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:18,517 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:18,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:02:18,517 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash 625237752, now seen corresponding path program 2 times [2020-10-27 15:02:18,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:18,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265049643] [2020-10-27 15:02:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:18,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:18,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:18,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 15:02:18,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-27 15:02:18,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:02:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 15:02:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:02:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:19,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:19,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:19,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:19,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:19,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:19,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:19,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:19,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:19,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:19,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:19,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:19,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:19,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:19,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:19,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:19,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:02:19,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:02:19,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 15:02:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:19,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:19,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:19,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:19,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:02:19,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:02:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:19,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 15:02:19,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265049643] [2020-10-27 15:02:19,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:02:19,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 15:02:19,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007475514] [2020-10-27 15:02:19,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 15:02:19,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:19,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 15:02:19,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:02:19,372 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand 14 states. [2020-10-27 15:02:21,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:21,296 INFO L93 Difference]: Finished difference Result 222 states and 288 transitions. [2020-10-27 15:02:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 15:02:21,299 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-27 15:02:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:21,302 INFO L225 Difference]: With dead ends: 222 [2020-10-27 15:02:21,302 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 15:02:21,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-27 15:02:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 15:02:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 174. [2020-10-27 15:02:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-27 15:02:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 222 transitions. [2020-10-27 15:02:21,354 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 222 transitions. Word has length 44 [2020-10-27 15:02:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:21,355 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 222 transitions. [2020-10-27 15:02:21,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 15:02:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 222 transitions. [2020-10-27 15:02:21,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 15:02:21,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:21,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:21,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:02:21,357 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:21,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:21,358 INFO L82 PathProgramCache]: Analyzing trace with hash 606989620, now seen corresponding path program 1 times [2020-10-27 15:02:21,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:21,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515220107] [2020-10-27 15:02:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 15:02:21,383 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 15:02:21,383 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 15:02:21,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:02:21,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:02:21 BoogieIcfgContainer [2020-10-27 15:02:21,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 15:02:21,422 INFO L168 Benchmark]: Toolchain (without parser) took 20930.75 ms. Allocated memory was 125.8 MB in the beginning and 348.1 MB in the end (delta: 222.3 MB). Free memory was 101.1 MB in the beginning and 202.2 MB in the end (delta: -101.1 MB). Peak memory consumption was 121.4 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:21,428 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 125.8 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 15:02:21,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.88 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 88.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:21,430 INFO L168 Benchmark]: Boogie Preprocessor took 49.86 ms. Allocated memory is still 125.8 MB. Free memory was 88.3 MB in the beginning and 86.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:21,430 INFO L168 Benchmark]: RCFGBuilder took 960.90 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 86.5 MB in the beginning and 135.7 MB in the end (delta: -49.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:21,431 INFO L168 Benchmark]: TraceAbstraction took 19566.26 ms. Allocated memory was 166.7 MB in the beginning and 348.1 MB in the end (delta: 181.4 MB). Free memory was 135.2 MB in the beginning and 202.2 MB in the end (delta: -67.1 MB). Peak memory consumption was 113.8 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:21,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 125.8 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 338.88 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 88.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.86 ms. Allocated memory is still 125.8 MB. Free memory was 88.3 MB in the beginning and 86.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 960.90 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 86.5 MB in the beginning and 135.7 MB in the end (delta: -49.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19566.26 ms. Allocated memory was 166.7 MB in the beginning and 348.1 MB in the end (delta: 181.4 MB). Free memory was 135.2 MB in the beginning and 202.2 MB in the end (delta: -67.1 MB). Peak memory consumption was 113.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L219] unsigned int a ; [L220] unsigned int ma = __VERIFIER_nondet_uint(); [L221] signed char ea = __VERIFIER_nondet_char(); [L222] unsigned int b ; [L223] unsigned int mb = __VERIFIER_nondet_uint(); [L224] signed char eb = __VERIFIER_nondet_char(); [L225] unsigned int r_add1 ; [L226] unsigned int r_add2 ; [L227] unsigned int zero ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int __retres14 ; [L234] CALL, EXPR base2flt(0, 0) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND TRUE ! m [L23] __retres4 = 0U [L73] return (__retres4); [L234] RET, EXPR base2flt(0, 0) [L234] zero = base2flt(0, 0) [L235] CALL, EXPR base2flt(ma, ea) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND TRUE m >= 1U << 25U [L57] COND TRUE e >= 127 [L58] __retres4 = 4294967295U [L73] return (__retres4); [L235] RET, EXPR base2flt(ma, ea) [L235] a = base2flt(ma, ea) [L236] CALL, EXPR base2flt(mb, eb) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int )(e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L236] RET, EXPR base2flt(mb, eb) [L236] b = base2flt(mb, eb) [L237] CALL addflt(a, b) [L77] unsigned int res ; [L78] unsigned int ma ; [L79] unsigned int mb ; [L80] unsigned int delta ; [L81] int ea ; [L82] int eb ; [L83] unsigned int tmp ; [L84] unsigned int __retres10 ; [L87] COND FALSE !(a < b) [L94] COND FALSE !(! b) [L101] ma = a & ((1U << 24U) - 1U) [L102] ea = (int )(a >> 24U) - 128 [L103] ma = ma | (1U << 24U) [L104] mb = b & ((1U << 24U) - 1U) [L105] eb = (int )(b >> 24U) - 128 [L106] mb = mb | (1U << 24U) [L107] CALL __VERIFIER_assert(ea >= eb) [L9] COND TRUE !(cond) [L10] CALL reach_error() [L3] __assert_fail("0", "soft_float_4-2a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.4s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 507 SDtfs, 714 SDslu, 800 SDs, 0 SdLazy, 4070 SolverSat, 197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 123 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 332 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 36414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 102/116 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...