/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_1-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:01:37,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:01:37,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:01:37,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:01:37,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:01:37,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:01:37,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:01:37,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:01:37,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:01:37,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:01:37,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:01:37,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:01:37,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:01:37,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:01:37,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:01:37,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:01:37,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:01:37,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:01:37,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:01:37,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:01:37,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:01:37,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:01:37,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:01:37,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:01:37,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:01:37,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:01:37,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:01:37,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:01:37,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:01:37,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:01:37,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:01:37,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:01:37,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:01:37,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:01:37,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:01:37,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:01:37,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:01:37,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:01:37,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:01:37,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:01:37,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:01:37,991 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 15:01:38,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:01:38,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:01:38,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:01:38,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:01:38,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:01:38,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:01:38,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:01:38,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:01:38,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:01:38,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:01:38,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:01:38,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:01:38,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:01:38,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:01:38,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:01:38,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:01:38,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:01:38,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:01:38,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:01:38,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:01:38,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:01:38,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:01:38,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:01:38,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:01:38,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:01:38,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:01:38,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:01:38,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:01:38,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:01:38,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:01:38,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:01:38,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:01:38,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:01:38,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:01:38,423 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:01:38,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-27 15:01:38,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24f4913ce/4d4c57895ed94d14962e434874086cf5/FLAG2ffbce2a0 [2020-10-27 15:01:39,278 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:01:39,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-27 15:01:39,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24f4913ce/4d4c57895ed94d14962e434874086cf5/FLAG2ffbce2a0 [2020-10-27 15:01:39,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24f4913ce/4d4c57895ed94d14962e434874086cf5 [2020-10-27 15:01:39,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:01:39,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:01:39,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:01:39,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:01:39,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:01:39,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560f028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39, skipping insertion in model container [2020-10-27 15:01:39,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:01:39,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:01:39,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:01:39,866 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:01:39,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:01:40,014 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:01:40,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40 WrapperNode [2020-10-27 15:01:40,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:01:40,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:01:40,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:01:40,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:01:40,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (1/1) ... [2020-10-27 15:01:40,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (1/1) ... [2020-10-27 15:01:40,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (1/1) ... [2020-10-27 15:01:40,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (1/1) ... [2020-10-27 15:01:40,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (1/1) ... [2020-10-27 15:01:40,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (1/1) ... [2020-10-27 15:01:40,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (1/1) ... [2020-10-27 15:01:40,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:01:40,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:01:40,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:01:40,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:01:40,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (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 15:01:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:01:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:01:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:01:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 15:01:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-27 15:01:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-27 15:01:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-27 15:01:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:01:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:01:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:01:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:01:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:01:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 15:01:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 15:01:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 15:01:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-27 15:01:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-27 15:01:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-27 15:01:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:01:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:01:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:01:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:01:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:01:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:01:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:01:41,006 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:01:41,006 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 15:01:41,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:01:41 BoogieIcfgContainer [2020-10-27 15:01:41,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:01:41,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:01:41,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:01:41,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:01:41,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:01:39" (1/3) ... [2020-10-27 15:01:41,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792b90c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:01:41, skipping insertion in model container [2020-10-27 15:01:41,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:40" (2/3) ... [2020-10-27 15:01:41,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792b90c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:01:41, skipping insertion in model container [2020-10-27 15:01:41,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:01:41" (3/3) ... [2020-10-27 15:01:41,017 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-27 15:01:41,029 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:01:41,034 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:01:41,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:01:41,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:01:41,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:01:41,079 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:01:41,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:01:41,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:01:41,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:01:41,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:01:41,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:01:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-27 15:01:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 15:01:41,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:41,110 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, 1, 1] [2020-10-27 15:01:41,110 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:41,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:41,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1863629501, now seen corresponding path program 1 times [2020-10-27 15:01:41,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:41,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565189569] [2020-10-27 15:01:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:42,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 15:01:46,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:01:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 15:01:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:01:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:01:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:01:46,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 15:01:46,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:01:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:46,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:46,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:46,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:46,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:46,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:46,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:46,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:46,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:01:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:01:46,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:46,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:46,685 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 15:01:46,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565189569] [2020-10-27 15:01:46,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:01:46,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 15:01:46,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42917072] [2020-10-27 15:01:46,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:01:46,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:46,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:01:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:01:46,745 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 9 states. [2020-10-27 15:01:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:48,135 INFO L93 Difference]: Finished difference Result 200 states and 319 transitions. [2020-10-27 15:01:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:01:48,139 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-27 15:01:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:48,156 INFO L225 Difference]: With dead ends: 200 [2020-10-27 15:01:48,157 INFO L226 Difference]: Without dead ends: 115 [2020-10-27 15:01:48,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:01:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-27 15:01:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2020-10-27 15:01:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 15:01:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2020-10-27 15:01:48,271 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 38 [2020-10-27 15:01:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:48,272 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2020-10-27 15:01:48,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:01:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2020-10-27 15:01:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 15:01:48,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:48,278 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, 1, 1] [2020-10-27 15:01:48,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:01:48,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:48,279 INFO L82 PathProgramCache]: Analyzing trace with hash 868916718, now seen corresponding path program 1 times [2020-10-27 15:01:48,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:48,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609970715] [2020-10-27 15:01:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 15:01:50,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:01:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1821 [2020-10-27 15:01:50,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:01:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:01:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:01:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:50,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:01:50,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:50,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:01:50,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:50,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:50,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:01:50,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:50,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:50,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:50,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:01:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:01:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:50,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:01:50,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:01:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,363 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 15:01:50,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609970715] [2020-10-27 15:01:50,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:50,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:01:50,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416659157] [2020-10-27 15:01:50,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:01:50,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:50,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:01:50,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:01:50,368 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand 10 states. [2020-10-27 15:01:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:51,609 INFO L93 Difference]: Finished difference Result 272 states and 403 transitions. [2020-10-27 15:01:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:01:51,609 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-27 15:01:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:51,612 INFO L225 Difference]: With dead ends: 272 [2020-10-27 15:01:51,613 INFO L226 Difference]: Without dead ends: 194 [2020-10-27 15:01:51,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:01:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-27 15:01:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 179. [2020-10-27 15:01:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-27 15:01:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 259 transitions. [2020-10-27 15:01:51,644 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 259 transitions. Word has length 42 [2020-10-27 15:01:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:51,645 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 259 transitions. [2020-10-27 15:01:51,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:01:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 259 transitions. [2020-10-27 15:01:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 15:01:51,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:51,647 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, 1, 1] [2020-10-27 15:01:51,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:01:51,648 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:51,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1651043216, now seen corresponding path program 1 times [2020-10-27 15:01:51,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:51,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94283714] [2020-10-27 15:01:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 15:01:53,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:01:53,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1506 [2020-10-27 15:01:53,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:01:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:01:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:01:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:53,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:01:53,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:53,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:01:53,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:01:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:53,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:01:53,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:01:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:01:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:01:53,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:01:53,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:53,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:01:53,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,445 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 15:01:53,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94283714] [2020-10-27 15:01:53,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:53,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:01:53,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722868620] [2020-10-27 15:01:53,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:01:53,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:53,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:01:53,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:01:53,448 INFO L87 Difference]: Start difference. First operand 179 states and 259 transitions. Second operand 10 states. [2020-10-27 15:01:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:54,713 INFO L93 Difference]: Finished difference Result 229 states and 328 transitions. [2020-10-27 15:01:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:01:54,713 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-27 15:01:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:54,716 INFO L225 Difference]: With dead ends: 229 [2020-10-27 15:01:54,716 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 15:01:54,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:01:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 15:01:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 169. [2020-10-27 15:01:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 15:01:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 242 transitions. [2020-10-27 15:01:54,741 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 242 transitions. Word has length 42 [2020-10-27 15:01:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:54,742 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 242 transitions. [2020-10-27 15:01:54,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:01:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 242 transitions. [2020-10-27 15:01:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 15:01:54,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:54,744 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, 1, 1] [2020-10-27 15:01:54,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:01:54,745 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash -868860829, now seen corresponding path program 2 times [2020-10-27 15:01:54,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:54,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317565427] [2020-10-27 15:01:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 15:01:55,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:01:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-27 15:01:55,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:01:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 15:01:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 15:01:55,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:55,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:55,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:55,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:55,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:55,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:01:55,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:01:55,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:55,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:01:55,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:01:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 15:01:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:01:55,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:01:55,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:01:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 15:01:55,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317565427] [2020-10-27 15:01:55,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:55,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:01:55,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638460200] [2020-10-27 15:01:55,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:01:55,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:55,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:01:55,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:01:55,246 INFO L87 Difference]: Start difference. First operand 169 states and 242 transitions. Second operand 7 states. [2020-10-27 15:01:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:55,999 INFO L93 Difference]: Finished difference Result 399 states and 590 transitions. [2020-10-27 15:01:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:01:56,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-27 15:01:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:56,003 INFO L225 Difference]: With dead ends: 399 [2020-10-27 15:01:56,003 INFO L226 Difference]: Without dead ends: 275 [2020-10-27 15:01:56,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:01:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-27 15:01:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 195. [2020-10-27 15:01:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-27 15:01:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 276 transitions. [2020-10-27 15:01:56,033 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 276 transitions. Word has length 46 [2020-10-27 15:01:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:56,033 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 276 transitions. [2020-10-27 15:01:56,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:01:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 276 transitions. [2020-10-27 15:01:56,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 15:01:56,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:56,036 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, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:56,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:01:56,037 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:56,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:56,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1460889539, now seen corresponding path program 1 times [2020-10-27 15:01:56,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:56,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775151607] [2020-10-27 15:01:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 15:01:56,079 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 15:01:56,080 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 15:01:56,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:01:56,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:01:56 BoogieIcfgContainer [2020-10-27 15:01:56,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 15:01:56,109 INFO L168 Benchmark]: Toolchain (without parser) took 16564.75 ms. Allocated memory was 151.0 MB in the beginning and 337.6 MB in the end (delta: 186.6 MB). Free memory was 126.2 MB in the beginning and 313.7 MB in the end (delta: -187.5 MB). Peak memory consumption was 196.4 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,110 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 15:01:56,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.74 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 112.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,112 INFO L168 Benchmark]: Boogie Preprocessor took 60.53 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 110.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,113 INFO L168 Benchmark]: RCFGBuilder took 930.78 ms. Allocated memory is still 151.0 MB. Free memory was 110.2 MB in the beginning and 130.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 32.3 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,114 INFO L168 Benchmark]: TraceAbstraction took 15097.06 ms. Allocated memory was 151.0 MB in the beginning and 337.6 MB in the end (delta: 186.6 MB). Free memory was 130.2 MB in the beginning and 313.7 MB in the end (delta: -183.4 MB). Peak memory consumption was 199.8 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 461.74 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 112.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.53 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 110.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 930.78 ms. Allocated memory is still 151.0 MB. Free memory was 110.2 MB in the beginning and 130.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 32.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15097.06 ms. Allocated memory was 151.0 MB in the beginning and 337.6 MB in the end (delta: 186.6 MB). Free memory was 130.2 MB in the beginning and 313.7 MB in the end (delta: -183.4 MB). Peak memory consumption was 199.8 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 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L243] CALL, EXPR base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] RET, EXPR base2flt(0, 0) [L243] zero = base2flt(0, 0) [L244] CALL, EXPR base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L244] RET, EXPR base2flt(ma, ea) [L244] a = base2flt(ma, ea) [L245] CALL, EXPR base2flt(mb, eb) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] RET, EXPR base2flt(mb, eb) [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L268] CALL addflt(a, b) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND TRUE a < b [L87] tmp = a [L88] a = b [L89] b = tmp [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L106] CALL __VERIFIER_assert(ea >= eb) [L8] COND TRUE !(cond) [L9] CALL reach_error() [L3] __assert_fail("0", "soft_float_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 400 SDtfs, 732 SDslu, 398 SDs, 0 SdLazy, 2662 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 118 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 20812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 52/64 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...