/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:01:20,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:01:20,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:01:20,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:01:20,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:01:20,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:01:20,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:01:20,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:01:20,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:01:20,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:01:20,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:01:20,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:01:20,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:01:20,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:01:20,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:01:20,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:01:20,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:01:20,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:01:20,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:01:20,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:01:20,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:01:20,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:01:20,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:01:20,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:01:20,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:01:20,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:01:20,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:01:20,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:01:20,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:01:20,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:01:20,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:01:20,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:01:20,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:01:20,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:01:20,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:01:20,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:01:20,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:01:20,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:01:20,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:01:20,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:01:20,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:01:20,944 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 [2020-10-26 20:01:20,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:01:20,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:01:21,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:01:21,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:01:21,000 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:01:21,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:01:21,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:01:21,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:01:21,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:01:21,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:01:21,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:01:21,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:01:21,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:01:21,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:01:21,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:01:21,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:01:21,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:01:21,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:01:21,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:01:21,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:01:21,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:01:21,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:01:21,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:01:21,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:01:21,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:01:21,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:01:21,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:01:21,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:01:21,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:01:21,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:01:21,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:01:21,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:01:21,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:01:21,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:01:21,462 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:01:21,463 INFO L432 ainManager$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 [2020-10-26 20:01:21,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/677c54834/97940a780f1143e194a10171194fba03/FLAG9ba9e0922 [2020-10-26 20:01:22,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:01:22,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-26 20:01:22,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/677c54834/97940a780f1143e194a10171194fba03/FLAG9ba9e0922 [2020-10-26 20:01:22,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/677c54834/97940a780f1143e194a10171194fba03 [2020-10-26 20:01:22,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:01:22,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:01:22,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:01:22,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:01:22,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:01:22,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:01:22" (1/1) ... [2020-10-26 20:01:22,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba0ad1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:22, skipping insertion in model container [2020-10-26 20:01:22,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:01:22" (1/1) ... [2020-10-26 20:01:22,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:01:22,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:01:22,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:01:22,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:01:22,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:01:23,008 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:01:23,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23 WrapperNode [2020-10-26 20:01:23,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:01:23,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:01:23,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:01:23,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:01:23,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (1/1) ... [2020-10-26 20:01:23,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (1/1) ... [2020-10-26 20:01:23,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (1/1) ... [2020-10-26 20:01:23,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (1/1) ... [2020-10-26 20:01:23,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (1/1) ... [2020-10-26 20:01:23,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (1/1) ... [2020-10-26 20:01:23,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (1/1) ... [2020-10-26 20:01:23,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:01:23,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:01:23,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:01:23,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:01:23,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (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 [2020-10-26 20:01:23,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:01:23,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:01:23,162 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:01:23,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 20:01:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-26 20:01:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-26 20:01:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-26 20:01:23,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:01:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:01:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:01:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:01:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:01:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-26 20:01:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-26 20:01:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 20:01:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-26 20:01:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-26 20:01:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-26 20:01:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:01:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:01:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:01:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:01:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:01:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:01:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:01:24,033 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:01:24,033 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 20:01:24,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:01:24 BoogieIcfgContainer [2020-10-26 20:01:24,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:01:24,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:01:24,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:01:24,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:01:24,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:01:22" (1/3) ... [2020-10-26 20:01:24,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e47991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:01:24, skipping insertion in model container [2020-10-26 20:01:24,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:01:23" (2/3) ... [2020-10-26 20:01:24,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e47991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:01:24, skipping insertion in model container [2020-10-26 20:01:24,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:01:24" (3/3) ... [2020-10-26 20:01:24,044 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-26 20:01:24,056 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:01:24,062 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:01:24,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:01:24,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:01:24,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:01:24,106 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:01:24,106 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:01:24,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:01:24,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:01:24,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:01:24,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:01:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-26 20:01:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-26 20:01:24,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:24,136 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] [2020-10-26 20:01:24,136 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:24,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:24,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1863629501, now seen corresponding path program 1 times [2020-10-26 20:01:24,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:24,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579239712] [2020-10-26 20:01:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:29,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:29,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-26 20:01:29,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:29,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 20:01:29,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:29,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:01:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-26 20:01:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:01:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:01:29,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:29,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:29,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:29,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:29,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:01:29,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:01:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:29,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:29,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:29,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:29,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:01:29,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:29,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:29,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:29,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:01:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 20:01:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:29,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:29,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:29,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:01:29,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 20:01:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:29,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579239712] [2020-10-26 20:01:29,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:29,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:01:29,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982297309] [2020-10-26 20:01:29,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:01:29,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:29,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:01:29,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:01:29,698 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 7 states. [2020-10-26 20:01:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:30,801 INFO L93 Difference]: Finished difference Result 198 states and 322 transitions. [2020-10-26 20:01:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:01:30,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-26 20:01:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:30,816 INFO L225 Difference]: With dead ends: 198 [2020-10-26 20:01:30,816 INFO L226 Difference]: Without dead ends: 113 [2020-10-26 20:01:30,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:01:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-26 20:01:30,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 88. [2020-10-26 20:01:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-26 20:01:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2020-10-26 20:01:30,883 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 38 [2020-10-26 20:01:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:30,884 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2020-10-26 20:01:30,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:01:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2020-10-26 20:01:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 20:01:30,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:30,888 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, 1, 1, 1, 1] [2020-10-26 20:01:30,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:01:30,888 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:30,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:30,889 INFO L82 PathProgramCache]: Analyzing trace with hash 911802531, now seen corresponding path program 1 times [2020-10-26 20:01:30,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:30,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562132505] [2020-10-26 20:01:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:33,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:33,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 20:01:33,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2243 [2020-10-26 20:01:33,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:01:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-26 20:01:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:01:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:33,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:33,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:33,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:33,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:33,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:33,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:33,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:01:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:33,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:33,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:33,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:33,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:33,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:01:33,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:33,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:33,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 20:01:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:33,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:33,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:33,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:01:33,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:33,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:33,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562132505] [2020-10-26 20:01:33,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:33,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:01:33,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352688389] [2020-10-26 20:01:33,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:01:33,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:33,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:01:33,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:01:33,307 INFO L87 Difference]: Start difference. First operand 88 states and 129 transitions. Second operand 7 states. [2020-10-26 20:01:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:33,985 INFO L93 Difference]: Finished difference Result 178 states and 268 transitions. [2020-10-26 20:01:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:01:33,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-26 20:01:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:33,988 INFO L225 Difference]: With dead ends: 178 [2020-10-26 20:01:33,989 INFO L226 Difference]: Without dead ends: 127 [2020-10-26 20:01:33,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:01:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-26 20:01:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-10-26 20:01:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-26 20:01:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 176 transitions. [2020-10-26 20:01:34,011 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 176 transitions. Word has length 42 [2020-10-26 20:01:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:34,012 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 176 transitions. [2020-10-26 20:01:34,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:01:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 176 transitions. [2020-10-26 20:01:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 20:01:34,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:34,015 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, 1, 1, 1, 1] [2020-10-26 20:01:34,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:01:34,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash -99314719, now seen corresponding path program 1 times [2020-10-26 20:01:34,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:34,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53419888] [2020-10-26 20:01:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 20:01:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 20:01:39,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 20:01:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-26 20:01:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:01:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:39,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:39,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:39,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:01:39,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:39,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:39,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:39,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:39,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:01:39,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:39,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:39,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:39,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:01:39,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 20:01:39,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-26 20:01:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:39,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:39,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:39,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:39,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:39,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:39,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:39,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53419888] [2020-10-26 20:01:39,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:39,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 20:01:39,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77190647] [2020-10-26 20:01:39,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 20:01:39,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:39,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 20:01:39,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:01:39,381 INFO L87 Difference]: Start difference. First operand 119 states and 176 transitions. Second operand 11 states. [2020-10-26 20:01:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:41,301 INFO L93 Difference]: Finished difference Result 256 states and 391 transitions. [2020-10-26 20:01:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:01:41,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-26 20:01:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:41,307 INFO L225 Difference]: With dead ends: 256 [2020-10-26 20:01:41,307 INFO L226 Difference]: Without dead ends: 201 [2020-10-26 20:01:41,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:01:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-26 20:01:41,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 128. [2020-10-26 20:01:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-26 20:01:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 187 transitions. [2020-10-26 20:01:41,354 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 187 transitions. Word has length 42 [2020-10-26 20:01:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:41,355 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 187 transitions. [2020-10-26 20:01:41,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 20:01:41,355 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 187 transitions. [2020-10-26 20:01:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 20:01:41,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:41,365 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] [2020-10-26 20:01:41,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:01:41,365 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:41,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2077891154, now seen corresponding path program 1 times [2020-10-26 20:01:41,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:41,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61652943] [2020-10-26 20:01:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 20:01:45,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:45,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3876 [2020-10-26 20:01:45,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 20:01:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 20:01:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-26 20:01:45,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:45,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:01:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:01:45,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:01:45,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:01:45,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 20:01:45,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:01:45,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:01:45,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-26 20:01:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:45,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:01:45,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 20:01:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 20:01:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:45,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:45,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 20:01:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 20:01:45,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61652943] [2020-10-26 20:01:45,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:45,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:01:45,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682633139] [2020-10-26 20:01:45,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:01:45,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:45,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:01:45,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:01:45,396 INFO L87 Difference]: Start difference. First operand 128 states and 187 transitions. Second operand 5 states. [2020-10-26 20:01:45,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:45,840 INFO L93 Difference]: Finished difference Result 245 states and 360 transitions. [2020-10-26 20:01:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:01:45,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-26 20:01:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:45,843 INFO L225 Difference]: With dead ends: 245 [2020-10-26 20:01:45,843 INFO L226 Difference]: Without dead ends: 124 [2020-10-26 20:01:45,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:01:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-26 20:01:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2020-10-26 20:01:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-26 20:01:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 159 transitions. [2020-10-26 20:01:45,876 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 159 transitions. Word has length 42 [2020-10-26 20:01:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:45,878 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 159 transitions. [2020-10-26 20:01:45,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:01:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 159 transitions. [2020-10-26 20:01:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 20:01:45,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:45,879 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, 1, 1, 1, 1] [2020-10-26 20:01:45,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:01:45,880 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash -825975016, now seen corresponding path program 1 times [2020-10-26 20:01:45,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:45,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584510785] [2020-10-26 20:01:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:01:46,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:01:46,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-26 20:01:46,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:01:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-26 20:01:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:01:46,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:01:46,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:46,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:46,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:01:46,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:46,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:01:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:01:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:46,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 20:01:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:46,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:46,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:46,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:46,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:01:46,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:01:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:46,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584510785] [2020-10-26 20:01:46,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:01:46,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 20:01:46,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950172672] [2020-10-26 20:01:46,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:01:46,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:46,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:01:46,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:01:46,394 INFO L87 Difference]: Start difference. First operand 112 states and 159 transitions. Second operand 7 states. [2020-10-26 20:01:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:47,076 INFO L93 Difference]: Finished difference Result 232 states and 338 transitions. [2020-10-26 20:01:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:01:47,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-26 20:01:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:47,080 INFO L225 Difference]: With dead ends: 232 [2020-10-26 20:01:47,080 INFO L226 Difference]: Without dead ends: 164 [2020-10-26 20:01:47,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:01:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-26 20:01:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-10-26 20:01:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-26 20:01:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 228 transitions. [2020-10-26 20:01:47,115 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 228 transitions. Word has length 46 [2020-10-26 20:01:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:47,116 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 228 transitions. [2020-10-26 20:01:47,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:01:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 228 transitions. [2020-10-26 20:01:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 20:01:47,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:47,118 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, 1, 1, 1, 1] [2020-10-26 20:01:47,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:01:47,118 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:47,119 INFO L82 PathProgramCache]: Analyzing trace with hash -124910438, now seen corresponding path program 1 times [2020-10-26 20:01:47,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:47,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470981443] [2020-10-26 20:01:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:47,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:48,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:48,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:01:48,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1682 [2020-10-26 20:01:48,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:01:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-26 20:01:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:01:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:48,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:48,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:48,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:01:48,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:48,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:48,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:48,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:01:48,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:01:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-26 20:01:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:49,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:49,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:01:49,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:49,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:01:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-26 20:01:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:49,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:49,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:01:49,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:49,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:01:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 20:01:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 20:01:49,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470981443] [2020-10-26 20:01:49,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:49,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 20:01:49,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351630723] [2020-10-26 20:01:49,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 20:01:49,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:49,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 20:01:49,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:01:49,034 INFO L87 Difference]: Start difference. First operand 160 states and 228 transitions. Second operand 10 states. [2020-10-26 20:01:50,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:50,307 INFO L93 Difference]: Finished difference Result 307 states and 450 transitions. [2020-10-26 20:01:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:01:50,308 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-26 20:01:50,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:50,310 INFO L225 Difference]: With dead ends: 307 [2020-10-26 20:01:50,310 INFO L226 Difference]: Without dead ends: 215 [2020-10-26 20:01:50,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-26 20:01:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-26 20:01:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 172. [2020-10-26 20:01:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-26 20:01:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 238 transitions. [2020-10-26 20:01:50,339 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 238 transitions. Word has length 46 [2020-10-26 20:01:50,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:50,340 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 238 transitions. [2020-10-26 20:01:50,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 20:01:50,340 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 238 transitions. [2020-10-26 20:01:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 20:01:50,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:50,347 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] [2020-10-26 20:01:50,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:01:50,348 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:50,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1460889539, now seen corresponding path program 2 times [2020-10-26 20:01:50,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:50,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436950293] [2020-10-26 20:01:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 20:01:50,374 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 20:01:50,375 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 20:01:50,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:01:50,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:01:50 BoogieIcfgContainer [2020-10-26 20:01:50,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:01:50,415 INFO L168 Benchmark]: Toolchain (without parser) took 27834.95 ms. Allocated memory was 153.1 MB in the beginning and 386.9 MB in the end (delta: 233.8 MB). Free memory was 128.0 MB in the beginning and 343.3 MB in the end (delta: -215.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,415 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:01:50,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.70 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 114.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,423 INFO L168 Benchmark]: Boogie Preprocessor took 57.54 ms. Allocated memory is still 153.1 MB. Free memory was 114.5 MB in the beginning and 112.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,423 INFO L168 Benchmark]: RCFGBuilder took 967.29 ms. Allocated memory is still 153.1 MB. Free memory was 112.4 MB in the beginning and 115.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,424 INFO L168 Benchmark]: TraceAbstraction took 26373.64 ms. Allocated memory was 153.1 MB in the beginning and 386.9 MB in the end (delta: 233.8 MB). Free memory was 115.2 MB in the beginning and 343.3 MB in the end (delta: -228.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:50,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 420.70 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 114.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.54 ms. Allocated memory is still 153.1 MB. Free memory was 114.5 MB in the beginning and 112.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 967.29 ms. Allocated memory is still 153.1 MB. Free memory was 112.4 MB in the beginning and 115.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26373.64 ms. Allocated memory was 153.1 MB in the beginning and 386.9 MB in the end (delta: 233.8 MB). Free memory was 115.2 MB in the beginning and 343.3 MB in the end (delta: -228.1 MB). Peak memory consumption was 7.3 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: 26.2s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 626 SDtfs, 1023 SDslu, 503 SDs, 0 SdLazy, 3383 SolverSat, 184 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=6, 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, 6 MinimizatonAttempts, 165 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 250 ConstructedInterpolants, 0 QuantifiedInterpolants, 33287 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 61/90 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...