/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:37:27,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:37:27,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:37:27,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:37:27,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:37:27,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:37:27,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:37:27,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:37:27,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:37:27,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:37:27,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:37:27,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:37:27,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:37:27,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:37:27,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:37:27,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:37:27,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:37:27,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:37:27,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:37:27,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:37:27,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:37:27,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:37:27,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:37:27,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:37:27,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:37:27,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:37:27,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:37:27,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:37:27,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:37:27,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:37:27,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:37:27,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:37:27,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:37:27,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:37:27,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:37:27,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:37:27,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:37:27,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:37:27,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:37:27,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:37:27,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:37:27,831 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 [2020-10-28 09:37:27,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:37:27,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:37:27,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:37:27,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:37:27,865 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:37:27,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:37:27,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:37:27,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:37:27,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:37:27,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:37:27,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:37:27,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:37:27,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:37:27,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:37:27,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:37:27,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:37:27,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:37:27,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:37:27,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:37:27,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:37:27,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:37:27,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:37:27,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:37:27,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:37:27,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:37:27,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:37:27,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:37:27,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:37:27,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:37:27,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:37:28,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:37:28,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:37:28,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:37:28,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:37:28,360 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:37:28,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-28 09:37:28,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eafe8d93e/fa806849e5fa4ce0b8bc2179bcd970f2/FLAG249696a4e [2020-10-28 09:37:29,119 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:37:29,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-28 09:37:29,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eafe8d93e/fa806849e5fa4ce0b8bc2179bcd970f2/FLAG249696a4e [2020-10-28 09:37:29,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eafe8d93e/fa806849e5fa4ce0b8bc2179bcd970f2 [2020-10-28 09:37:29,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:37:29,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:37:29,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:37:29,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:37:29,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:37:29,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15873430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29, skipping insertion in model container [2020-10-28 09:37:29,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:37:29,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:37:29,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:37:29,801 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:37:29,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:37:29,873 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:37:29,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29 WrapperNode [2020-10-28 09:37:29,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:37:29,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:37:29,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:37:29,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:37:29,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (1/1) ... [2020-10-28 09:37:29,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:37:29,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:37:29,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:37:29,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:37:29,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (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 [2020-10-28 09:37:30,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:37:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:37:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:37:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:37:30,025 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-28 09:37:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-28 09:37:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-28 09:37:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:37:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:37:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:37:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:37:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:37:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 09:37:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 09:37:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:37:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-28 09:37:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-28 09:37:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-28 09:37:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:37:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:37:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:37:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:37:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:37:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:37:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:37:31,029 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:37:31,030 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:37:31,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:31 BoogieIcfgContainer [2020-10-28 09:37:31,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:37:31,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:37:31,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:37:31,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:37:31,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:37:29" (1/3) ... [2020-10-28 09:37:31,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14acfb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:31, skipping insertion in model container [2020-10-28 09:37:31,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:29" (2/3) ... [2020-10-28 09:37:31,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14acfb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:31, skipping insertion in model container [2020-10-28 09:37:31,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:31" (3/3) ... [2020-10-28 09:37:31,046 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-10-28 09:37:31,060 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:37:31,065 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:37:31,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:37:31,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:37:31,125 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:37:31,125 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:37:31,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:37:31,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:37:31,126 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:37:31,126 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:37:31,126 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:37:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-28 09:37:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 09:37:31,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:31,168 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] [2020-10-28 09:37:31,169 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:31,178 INFO L82 PathProgramCache]: Analyzing trace with hash -217491453, now seen corresponding path program 1 times [2020-10-28 09:37:31,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:31,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56769894] [2020-10-28 09:37:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:36,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 09:37:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:37:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:37:36,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:36,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:37:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:37:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:37:36,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:37:36,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:36,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:37:36,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:36,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:36,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:36,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 09:37:36,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:36,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:36,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:36,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:37:36,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:36,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:37:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:36,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:36,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:36,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:37:36,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:36,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:36,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56769894] [2020-10-28 09:37:36,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:36,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:37:36,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813620302] [2020-10-28 09:37:36,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:37:36,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:36,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:37:36,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:37:36,772 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 7 states. [2020-10-28 09:37:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:37,837 INFO L93 Difference]: Finished difference Result 198 states and 321 transitions. [2020-10-28 09:37:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:37:37,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-28 09:37:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:37,851 INFO L225 Difference]: With dead ends: 198 [2020-10-28 09:37:37,852 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 09:37:37,856 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 [2020-10-28 09:37:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 09:37:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 88. [2020-10-28 09:37:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 09:37:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 128 transitions. [2020-10-28 09:37:37,920 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 128 transitions. Word has length 38 [2020-10-28 09:37:37,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:37,920 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 128 transitions. [2020-10-28 09:37:37,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:37:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 128 transitions. [2020-10-28 09:37:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 09:37:37,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:37,924 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] [2020-10-28 09:37:37,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:37:37,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:37,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1327575581, now seen corresponding path program 1 times [2020-10-28 09:37:37,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:37,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66804517] [2020-10-28 09:37:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:38,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 09:37:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:37:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2454 [2020-10-28 09:37:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:37:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:37:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:37:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:40,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:40,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:40,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:40,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:40,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:40,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:40,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:40,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:40,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:37:40,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:40,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:40,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:40,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:40,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:40,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:40,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:40,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:40,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66804517] [2020-10-28 09:37:40,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:40,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:37:40,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884926119] [2020-10-28 09:37:40,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:37:40,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:37:40,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:37:40,617 INFO L87 Difference]: Start difference. First operand 88 states and 128 transitions. Second operand 10 states. [2020-10-28 09:37:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:41,762 INFO L93 Difference]: Finished difference Result 197 states and 293 transitions. [2020-10-28 09:37:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:37:41,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 09:37:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:41,768 INFO L225 Difference]: With dead ends: 197 [2020-10-28 09:37:41,769 INFO L226 Difference]: Without dead ends: 146 [2020-10-28 09:37:41,770 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 [2020-10-28 09:37:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-28 09:37:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2020-10-28 09:37:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 09:37:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 197 transitions. [2020-10-28 09:37:41,822 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 197 transitions. Word has length 42 [2020-10-28 09:37:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:41,823 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 197 transitions. [2020-10-28 09:37:41,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:37:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 197 transitions. [2020-10-28 09:37:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 09:37:41,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:41,830 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] [2020-10-28 09:37:41,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:37:41,830 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:41,831 INFO L82 PathProgramCache]: Analyzing trace with hash -563685469, now seen corresponding path program 1 times [2020-10-28 09:37:41,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:41,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339003489] [2020-10-28 09:37:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:45,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:45,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 09:37:45,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:37:45,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3693 [2020-10-28 09:37:45,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:45,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:37:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:37:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:37:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:45,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:45,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:45,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:37:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:45,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:45,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:45,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:45,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:45,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:45,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:45,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:45,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:45,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:45,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:45,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:37:45,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:45,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:45,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:45,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:45,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:45,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339003489] [2020-10-28 09:37:45,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:45,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:37:45,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948434976] [2020-10-28 09:37:45,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:37:45,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:45,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:37:45,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:37:45,734 INFO L87 Difference]: Start difference. First operand 135 states and 197 transitions. Second operand 10 states. [2020-10-28 09:37:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:47,078 INFO L93 Difference]: Finished difference Result 181 states and 260 transitions. [2020-10-28 09:37:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:37:47,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 09:37:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:47,081 INFO L225 Difference]: With dead ends: 181 [2020-10-28 09:37:47,081 INFO L226 Difference]: Without dead ends: 140 [2020-10-28 09:37:47,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:37:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-28 09:37:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2020-10-28 09:37:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 09:37:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 181 transitions. [2020-10-28 09:37:47,119 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 181 transitions. Word has length 42 [2020-10-28 09:37:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:47,119 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 181 transitions. [2020-10-28 09:37:47,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:37:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 181 transitions. [2020-10-28 09:37:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 09:37:47,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:47,124 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] [2020-10-28 09:37:47,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:37:47,124 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:47,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:47,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1039539288, now seen corresponding path program 1 times [2020-10-28 09:37:47,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:47,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622710962] [2020-10-28 09:37:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 09:37:47,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:47,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-28 09:37:47,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 09:37:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:37:47,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:47,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:37:47,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:47,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:47,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:47,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:37:47,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:47,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:37:47,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 09:37:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:47,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:47,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:47,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:37:47,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:47,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:47,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:47,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622710962] [2020-10-28 09:37:47,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:47,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 09:37:47,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500208912] [2020-10-28 09:37:47,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:37:47,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:47,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:37:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:47,738 INFO L87 Difference]: Start difference. First operand 125 states and 181 transitions. Second operand 9 states. [2020-10-28 09:37:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:48,673 INFO L93 Difference]: Finished difference Result 267 states and 389 transitions. [2020-10-28 09:37:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:37:48,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-28 09:37:48,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:48,676 INFO L225 Difference]: With dead ends: 267 [2020-10-28 09:37:48,676 INFO L226 Difference]: Without dead ends: 199 [2020-10-28 09:37:48,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:37:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-28 09:37:48,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2020-10-28 09:37:48,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-28 09:37:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 275 transitions. [2020-10-28 09:37:48,702 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 275 transitions. Word has length 46 [2020-10-28 09:37:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:48,703 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 275 transitions. [2020-10-28 09:37:48,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:37:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 275 transitions. [2020-10-28 09:37:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 09:37:48,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:48,704 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] [2020-10-28 09:37:48,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:37:48,705 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:48,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:48,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1313335811, now seen corresponding path program 2 times [2020-10-28 09:37:48,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:48,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78019885] [2020-10-28 09:37:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 09:37:48,728 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 09:37:48,729 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:37:48,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:37:48,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:37:48 BoogieIcfgContainer [2020-10-28 09:37:48,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:37:48,756 INFO L168 Benchmark]: Toolchain (without parser) took 19279.80 ms. Allocated memory was 151.0 MB in the beginning and 446.7 MB in the end (delta: 295.7 MB). Free memory was 125.2 MB in the beginning and 368.9 MB in the end (delta: -243.7 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:48,756 INFO L168 Benchmark]: CDTParser took 2.65 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:37:48,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.54 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 111.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:48,758 INFO L168 Benchmark]: Boogie Preprocessor took 65.96 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 109.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:48,759 INFO L168 Benchmark]: RCFGBuilder took 1091.44 ms. Allocated memory is still 151.0 MB. Free memory was 109.5 MB in the beginning and 113.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:48,760 INFO L168 Benchmark]: TraceAbstraction took 17715.74 ms. Allocated memory was 151.0 MB in the beginning and 446.7 MB in the end (delta: 295.7 MB). Free memory was 112.9 MB in the beginning and 368.9 MB in the end (delta: -256.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:48,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.65 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 388.54 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 111.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.96 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 109.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1091.44 ms. Allocated memory is still 151.0 MB. Free memory was 109.5 MB in the beginning and 113.4 MB in the end (delta: -3.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17715.74 ms. Allocated memory was 151.0 MB in the beginning and 446.7 MB in the end (delta: 295.7 MB). Free memory was 112.9 MB in the beginning and 368.9 MB in the end (delta: -256.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L219] unsigned int a ; [L220] unsigned int ma = __VERIFIER_nondet_uint(); [L221] signed char ea = __VERIFIER_nondet_char(); [L222] unsigned int b ; [L223] unsigned int mb = __VERIFIER_nondet_uint(); [L224] signed char eb = __VERIFIER_nondet_char(); [L225] unsigned int r_add ; [L226] unsigned int zero ; [L227] int sa ; [L228] int sb ; [L229] int tmp ; [L230] int tmp___0 ; [L231] int tmp___1 ; [L232] int tmp___2 ; [L233] int tmp___3 ; [L234] int tmp___4 ; [L235] int tmp___5 ; [L236] int tmp___6 ; [L237] int tmp___7 ; [L238] int tmp___8 ; [L239] int tmp___9 ; [L240] int __retres23 ; [L244] CALL, EXPR base2flt(0, 0) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND TRUE ! m [L23] __retres4 = 0U [L73] return (__retres4); [L244] RET, EXPR base2flt(0, 0) [L244] zero = base2flt(0, 0) [L245] CALL, EXPR base2flt(ma, ea) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int ) (e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L245] RET, EXPR base2flt(ma, ea) [L245] a = base2flt(ma, ea) [L246] CALL, EXPR base2flt(mb, eb) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int ) (e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L246] RET, EXPR base2flt(mb, eb) [L246] b = base2flt(mb, eb) [L248] COND FALSE !(a < zero) [L251] COND TRUE a > zero [L252] tmp = 1 [L256] sa = tmp [L258] COND FALSE !(b < zero) [L261] COND TRUE b > zero [L262] tmp___0 = 1 [L266] sb = tmp___0 [L269] CALL addflt(a, b) [L77] unsigned int res ; [L78] unsigned int ma ; [L79] unsigned int mb ; [L80] unsigned int delta ; [L81] int ea ; [L82] int eb ; [L83] unsigned int tmp ; [L84] unsigned int __retres10 ; [L87] COND TRUE a < b [L88] tmp = a [L89] a = b [L90] b = tmp [L94] COND FALSE !(! b) [L101] ma = a & ((1U << 24U) - 1U) [L102] ea = (int )(a >> 24U) - 128 [L103] ma = ma | (1U << 24U) [L104] mb = b & ((1U << 24U) - 1U) [L105] eb = (int )(b >> 24U) - 128 [L106] mb = mb | (1U << 24U) [L107] CALL __VERIFIER_assert(ea >= eb) [L9] COND TRUE !(cond) [L10] CALL reach_error() [L3] __assert_fail("0", "soft_float_1-2a.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: 17.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 406 SDtfs, 717 SDslu, 374 SDs, 0 SdLazy, 2672 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.4s 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, 55 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 22934 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 48/60 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...