/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:01:37,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:01:37,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:01:37,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:01:37,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:01:37,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:01:37,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:01:37,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:01:37,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:01:37,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:01:37,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:01:37,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:01:37,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:01:37,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:01:37,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:01:37,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:01:37,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:01:37,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:01:37,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:01:37,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:01:37,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:01:37,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:01:37,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:01:37,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:01:37,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:01:37,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:01:37,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:01:37,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:01:37,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:01:37,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:01:37,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:01:37,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:01:37,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:01:37,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:01:37,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:01:37,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:01:37,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:01:37,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:01:37,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:01:37,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:01:37,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:01:37,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:01:37,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:01:37,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:01:37,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:01:37,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:01:37,674 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:01:37,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:01:37,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:01:37,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:01:37,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:01:37,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:01:37,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:01:37,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:01:37,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:01:37,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:01:37,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:01:37,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:01:37,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:01:37,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:01:37,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:01:37,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:01:37,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:01:37,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:01:37,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:01:37,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:01:37,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:01:37,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:01:37,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:01:37,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:01:37,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:01:37,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:01:38,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:01:38,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:01:38,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:01:38,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:01:38,125 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:01:38,128 INFO L432 ainManager$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 [2020-10-27 15:01:38,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86343a292/45b458cab43b4397b19c76ece2ae6a19/FLAG552fcc5e5 [2020-10-27 15:01:38,870 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:01:38,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-2a.c.cil.c [2020-10-27 15:01:38,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86343a292/45b458cab43b4397b19c76ece2ae6a19/FLAG552fcc5e5 [2020-10-27 15:01:39,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86343a292/45b458cab43b4397b19c76ece2ae6a19 [2020-10-27 15:01:39,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:01:39,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:01:39,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:01:39,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:01:39,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:01:39,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abeb7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39, skipping insertion in model container [2020-10-27 15:01:39,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:01:39,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:01:39,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:01:39,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:01:39,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:01:39,735 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:01:39,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39 WrapperNode [2020-10-27 15:01:39,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:01:39,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:01:39,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:01:39,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:01:39,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (1/1) ... [2020-10-27 15:01:39,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:01:39,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:01:39,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:01:39,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:01:39,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:01:39,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:01:39,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:01:39,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:01:39,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 15:01:39,890 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-27 15:01:39,890 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-27 15:01:39,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-27 15:01:39,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:01:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:01:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:01:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:01:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:01:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 15:01:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 15:01:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 15:01:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-27 15:01:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-27 15:01:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-27 15:01:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:01:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:01:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:01:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:01:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:01:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:01:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:01:40,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:01:40,649 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 15:01:40,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:01:40 BoogieIcfgContainer [2020-10-27 15:01:40,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:01:40,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:01:40,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:01:40,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:01:40,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:01:39" (1/3) ... [2020-10-27 15:01:40,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e40824c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:01:40, skipping insertion in model container [2020-10-27 15:01:40,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:39" (2/3) ... [2020-10-27 15:01:40,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e40824c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:01:40, skipping insertion in model container [2020-10-27 15:01:40,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:01:40" (3/3) ... [2020-10-27 15:01:40,661 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-10-27 15:01:40,673 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:01:40,679 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:01:40,694 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:01:40,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:01:40,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:01:40,724 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:01:40,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:01:40,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:01:40,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:01:40,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:01:40,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:01:40,745 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-27 15:01:40,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 15:01:40,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:40,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:40,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:40,761 INFO L82 PathProgramCache]: Analyzing trace with hash -217491453, now seen corresponding path program 1 times [2020-10-27 15:01:40,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:40,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907032540] [2020-10-27 15:01:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:45,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:45,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 15:01:45,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:01:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 15:01:45,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:01:45,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:01:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:01:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:01:46,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:46,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:46,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:01:46,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:46,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:46,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:46,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:01:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:46,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:46,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:46,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:01:46,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:01:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:01:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:46,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:46,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:46,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:01:46,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 15:01:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:01:46,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907032540] [2020-10-27 15:01:46,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:01:46,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 15:01:46,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452540300] [2020-10-27 15:01:46,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:01:46,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:46,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:01:46,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:01:46,461 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 9 states. [2020-10-27 15:01:47,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:47,867 INFO L93 Difference]: Finished difference Result 200 states and 318 transitions. [2020-10-27 15:01:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:01:47,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-27 15:01:47,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:47,882 INFO L225 Difference]: With dead ends: 200 [2020-10-27 15:01:47,883 INFO L226 Difference]: Without dead ends: 115 [2020-10-27 15:01:47,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:01:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-27 15:01:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2020-10-27 15:01:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-27 15:01:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 160 transitions. [2020-10-27 15:01:47,988 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 160 transitions. Word has length 38 [2020-10-27 15:01:47,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:47,990 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 160 transitions. [2020-10-27 15:01:47,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:01:47,990 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 160 transitions. [2020-10-27 15:01:47,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 15:01:47,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:47,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:47,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:01:47,995 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:47,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1014090322, now seen corresponding path program 1 times [2020-10-27 15:01:47,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:47,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109843428] [2020-10-27 15:01:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:48,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:49,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 15:01:49,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:01:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1901 [2020-10-27 15:01:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:01:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:01:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:01:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:50,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:50,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:50,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:50,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:50,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:01:50,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:01:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:50,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:50,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:01:50,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:01:50,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:01:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:01:50,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109843428] [2020-10-27 15:01:50,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:50,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:01:50,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920190750] [2020-10-27 15:01:50,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:01:50,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:50,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:01:50,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:01:50,162 INFO L87 Difference]: Start difference. First operand 111 states and 160 transitions. Second operand 10 states. [2020-10-27 15:01:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:51,495 INFO L93 Difference]: Finished difference Result 272 states and 400 transitions. [2020-10-27 15:01:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:01:51,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-27 15:01:51,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:51,499 INFO L225 Difference]: With dead ends: 272 [2020-10-27 15:01:51,499 INFO L226 Difference]: Without dead ends: 194 [2020-10-27 15:01:51,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:01:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-27 15:01:51,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 179. [2020-10-27 15:01:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-27 15:01:51,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 257 transitions. [2020-10-27 15:01:51,530 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 257 transitions. Word has length 42 [2020-10-27 15:01:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:51,531 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 257 transitions. [2020-10-27 15:01:51,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:01:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 257 transitions. [2020-10-27 15:01:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 15:01:51,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:51,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:51,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:01:51,534 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:51,535 INFO L82 PathProgramCache]: Analyzing trace with hash 760917040, now seen corresponding path program 1 times [2020-10-27 15:01:51,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:51,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126053141] [2020-10-27 15:01:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:51,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 15:01:53,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:01:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-27 15:01:53,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:01:53,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:01:53,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:01:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:01:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:53,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:01:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:53,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:01:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:53,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:53,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:01:53,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:01:53,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:01:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:01:53,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126053141] [2020-10-27 15:01:53,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:53,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:01:53,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107001783] [2020-10-27 15:01:53,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:01:53,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:53,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:01:53,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:01:53,417 INFO L87 Difference]: Start difference. First operand 179 states and 257 transitions. Second operand 10 states. [2020-10-27 15:01:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:54,699 INFO L93 Difference]: Finished difference Result 229 states and 326 transitions. [2020-10-27 15:01:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:01:54,699 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-27 15:01:54,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:54,702 INFO L225 Difference]: With dead ends: 229 [2020-10-27 15:01:54,702 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 15:01:54,703 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 [2020-10-27 15:01:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 15:01:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 169. [2020-10-27 15:01:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 15:01:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 241 transitions. [2020-10-27 15:01:54,725 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 241 transitions. Word has length 42 [2020-10-27 15:01:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:54,726 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 241 transitions. [2020-10-27 15:01:54,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:01:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 241 transitions. [2020-10-27 15:01:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 15:01:54,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:54,728 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:54,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:01:54,729 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1353024547, now seen corresponding path program 2 times [2020-10-27 15:01:54,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:54,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949562189] [2020-10-27 15:01:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:54,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 15:01:55,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:01:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-27 15:01:55,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:01:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 15:01:55,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 15:01:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:01:55,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:01:55,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:55,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:01:55,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:55,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:01:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:01:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:01:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:01:55,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:01:55,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:01:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:01:55,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 15:01:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:55,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:55,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:55,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:01:55,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:01:55,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:01:55,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 15:01:55,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949562189] [2020-10-27 15:01:55,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:55,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:01:55,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268909988] [2020-10-27 15:01:55,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:01:55,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:55,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:01:55,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:01:55,313 INFO L87 Difference]: Start difference. First operand 169 states and 241 transitions. Second operand 7 states. [2020-10-27 15:01:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:56,237 INFO L93 Difference]: Finished difference Result 399 states and 588 transitions. [2020-10-27 15:01:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:01:56,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-27 15:01:56,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:56,242 INFO L225 Difference]: With dead ends: 399 [2020-10-27 15:01:56,243 INFO L226 Difference]: Without dead ends: 275 [2020-10-27 15:01:56,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:01:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-27 15:01:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 195. [2020-10-27 15:01:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-27 15:01:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 275 transitions. [2020-10-27 15:01:56,292 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 275 transitions. Word has length 46 [2020-10-27 15:01:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:56,293 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 275 transitions. [2020-10-27 15:01:56,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:01:56,293 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 275 transitions. [2020-10-27 15:01:56,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 15:01:56,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:56,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:56,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:01:56,304 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:56,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:56,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1313335811, now seen corresponding path program 1 times [2020-10-27 15:01:56,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:56,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719087406] [2020-10-27 15:01:56,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 15:01:56,355 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 15:01:56,356 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 15:01:56,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:01:56,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:01:56 BoogieIcfgContainer [2020-10-27 15:01:56,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 15:01:56,405 INFO L168 Benchmark]: Toolchain (without parser) took 17182.36 ms. Allocated memory was 151.0 MB in the beginning and 406.8 MB in the end (delta: 255.9 MB). Free memory was 125.6 MB in the beginning and 382.8 MB in the end (delta: -257.3 MB). Peak memory consumption was 196.3 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,406 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 15:01:56,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.03 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 111.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,412 INFO L168 Benchmark]: Boogie Preprocessor took 58.43 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 109.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,414 INFO L168 Benchmark]: RCFGBuilder took 855.00 ms. Allocated memory is still 151.0 MB. Free memory was 109.9 MB in the beginning and 120.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,420 INFO L168 Benchmark]: TraceAbstraction took 15749.24 ms. Allocated memory was 151.0 MB in the beginning and 406.8 MB in the end (delta: 255.9 MB). Free memory was 119.8 MB in the beginning and 382.8 MB in the end (delta: -263.1 MB). Peak memory consumption was 189.4 MB. Max. memory is 8.0 GB. [2020-10-27 15:01:56,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 506.03 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 111.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.43 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 109.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 855.00 ms. Allocated memory is still 151.0 MB. Free memory was 109.9 MB in the beginning and 120.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15749.24 ms. Allocated memory was 151.0 MB in the beginning and 406.8 MB in the end (delta: 255.9 MB). Free memory was 119.8 MB in the beginning and 382.8 MB in the end (delta: -263.1 MB). Peak memory consumption was 189.4 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: 15.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 399 SDtfs, 740 SDslu, 374 SDs, 0 SdLazy, 2649 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 118 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 20812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 52/64 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...