/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:01:59,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:01:59,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:01:59,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:01:59,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:01:59,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:01:59,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:01:59,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:01:59,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:01:59,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:01:59,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:01:59,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:01:59,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:01:59,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:01:59,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:01:59,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:01:59,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:01:59,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:01:59,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:01:59,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:01:59,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:01:59,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:01:59,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:01:59,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:01:59,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:01:59,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:01:59,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:01:59,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:01:59,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:01:59,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:01:59,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:01:59,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:01:59,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:01:59,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:01:59,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:01:59,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:01:59,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:01:59,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:01:59,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:01:59,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:01:59,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:01:59,514 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 15:01:59,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:01:59,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:01:59,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:01:59,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:01:59,576 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:01:59,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:01:59,576 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:01:59,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:01:59,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:01:59,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:01:59,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:01:59,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:01:59,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:01:59,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:01:59,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:01:59,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:01:59,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:01:59,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:01:59,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:01:59,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:01:59,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:01:59,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:01:59,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:01:59,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:01:59,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:01:59,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:01:59,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:01:59,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:01:59,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:01:59,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:01:59,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:02:00,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:02:00,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:02:00,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:02:00,041 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:02:00,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-10-27 15:02:00,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee8ad3f98/e8ef503249274f83a3ac6148f3b2eaa9/FLAGbe1984f9c [2020-10-27 15:02:00,958 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:02:00,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-10-27 15:02:00,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee8ad3f98/e8ef503249274f83a3ac6148f3b2eaa9/FLAGbe1984f9c [2020-10-27 15:02:01,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee8ad3f98/e8ef503249274f83a3ac6148f3b2eaa9 [2020-10-27 15:02:01,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:02:01,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:02:01,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:02:01,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:02:01,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:02:01,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4435f103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01, skipping insertion in model container [2020-10-27 15:02:01,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:02:01,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:02:01,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:02:01,548 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:02:01,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:02:01,660 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:02:01,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01 WrapperNode [2020-10-27 15:02:01,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:02:01,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:02:01,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:02:01,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:02:01,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (1/1) ... [2020-10-27 15:02:01,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:02:01,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:02:01,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:02:01,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:02:01,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:02:01,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:02:01,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:02:01,798 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:02:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 15:02:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-27 15:02:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-27 15:02:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-27 15:02:01,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:02:01,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:02:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:02:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:02:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:02:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 15:02:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 15:02:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 15:02:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-27 15:02:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-27 15:02:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-27 15:02:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:02:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:02:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:02:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:02:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:02:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:02:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:02:02,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:02:02,616 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 15:02:02,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:02 BoogieIcfgContainer [2020-10-27 15:02:02,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:02:02,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:02:02,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:02:02,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:02:02,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:02:01" (1/3) ... [2020-10-27 15:02:02,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e781a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:02, skipping insertion in model container [2020-10-27 15:02:02,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:01" (2/3) ... [2020-10-27 15:02:02,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e781a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:02, skipping insertion in model container [2020-10-27 15:02:02,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:02" (3/3) ... [2020-10-27 15:02:02,628 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-10-27 15:02:02,641 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:02:02,646 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:02:02,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:02:02,691 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:02:02,691 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:02:02,691 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:02:02,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:02:02,692 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:02:02,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:02:02,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:02:02,692 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:02:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-27 15:02:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 15:02:02,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:02,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:02,721 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:02,728 INFO L82 PathProgramCache]: Analyzing trace with hash 946069334, now seen corresponding path program 1 times [2020-10-27 15:02:02,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:02,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574925209] [2020-10-27 15:02:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:05,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:05,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 15:02:05,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:05,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2183 [2020-10-27 15:02:05,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 15:02:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:02:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:02:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:05,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:05,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:05,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:05,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:02:05,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:05,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:05,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:05,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:05,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:05,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:05,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:05,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:05,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:05,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:05,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:05,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:05,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:05,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:02:05,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:05,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:02:05,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574925209] [2020-10-27 15:02:05,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:02:05,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 15:02:05,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603327701] [2020-10-27 15:02:05,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:05,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:05,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:05,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:05,432 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 9 states. [2020-10-27 15:02:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:06,496 INFO L93 Difference]: Finished difference Result 137 states and 203 transitions. [2020-10-27 15:02:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:02:06,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-27 15:02:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:06,511 INFO L225 Difference]: With dead ends: 137 [2020-10-27 15:02:06,511 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 15:02:06,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:02:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 15:02:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2020-10-27 15:02:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 15:02:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2020-10-27 15:02:06,576 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 36 [2020-10-27 15:02:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:06,577 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2020-10-27 15:02:06,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2020-10-27 15:02:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 15:02:06,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:06,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:06,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:02:06,581 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:06,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1142375291, now seen corresponding path program 1 times [2020-10-27 15:02:06,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:06,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623620908] [2020-10-27 15:02:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:06,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:06,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:02:06,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:06,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-27 15:02:06,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:02:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:02:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 15:02:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:07,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:07,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:07,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:07,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:07,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:07,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:02:07,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:07,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:07,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:07,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:07,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:02:07,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:07,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:07,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:02:07,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623620908] [2020-10-27 15:02:07,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:07,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:02:07,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887883618] [2020-10-27 15:02:07,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:02:07,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:07,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:02:07,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:02:07,237 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand 10 states. [2020-10-27 15:02:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:08,364 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2020-10-27 15:02:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:02:08,366 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-27 15:02:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:08,370 INFO L225 Difference]: With dead ends: 133 [2020-10-27 15:02:08,370 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 15:02:08,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:02:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 15:02:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2020-10-27 15:02:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 15:02:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2020-10-27 15:02:08,420 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 40 [2020-10-27 15:02:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:08,421 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2020-10-27 15:02:08,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:02:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2020-10-27 15:02:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 15:02:08,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:08,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:08,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:02:08,424 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:08,425 INFO L82 PathProgramCache]: Analyzing trace with hash 632632071, now seen corresponding path program 1 times [2020-10-27 15:02:08,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:08,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887580381] [2020-10-27 15:02:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:08,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:02:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:02:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-27 15:02:08,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:02:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:02:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 15:02:08,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 15:02:09,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:09,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:09,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:09,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:09,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:02:09,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:02:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:09,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:09,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:09,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:09,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:09,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:09,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:09,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:09,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:02:09,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:09,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:09,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:09,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:09,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 15:02:09,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:02:09,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 15:02:09,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887580381] [2020-10-27 15:02:09,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:09,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 15:02:09,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224151305] [2020-10-27 15:02:09,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 15:02:09,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:09,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 15:02:09,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:02:09,409 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand 13 states. [2020-10-27 15:02:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:10,874 INFO L93 Difference]: Finished difference Result 155 states and 212 transitions. [2020-10-27 15:02:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:02:10,874 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-27 15:02:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:10,877 INFO L225 Difference]: With dead ends: 155 [2020-10-27 15:02:10,877 INFO L226 Difference]: Without dead ends: 113 [2020-10-27 15:02:10,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-10-27 15:02:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-27 15:02:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2020-10-27 15:02:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 15:02:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 130 transitions. [2020-10-27 15:02:10,903 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 130 transitions. Word has length 40 [2020-10-27 15:02:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:10,903 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 130 transitions. [2020-10-27 15:02:10,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 15:02:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 130 transitions. [2020-10-27 15:02:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 15:02:10,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:10,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:10,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:02:10,906 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash 614383939, now seen corresponding path program 1 times [2020-10-27 15:02:10,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:10,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594459498] [2020-10-27 15:02:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:10,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:11,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:11,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 15:02:11,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:11,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 15:02:11,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:02:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 15:02:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 15:02:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:11,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:11,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:11,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:02:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:11,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:11,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:11,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:11,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:11,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:11,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:11,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:11,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:11,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:11,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:11,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:11,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:11,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:02:11,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:02:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:11,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:11,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:11,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:11,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:02:11,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:11,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:11,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:02:11,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594459498] [2020-10-27 15:02:11,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:11,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:02:11,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793551618] [2020-10-27 15:02:11,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:02:11,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:11,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:02:11,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:02:11,388 INFO L87 Difference]: Start difference. First operand 97 states and 130 transitions. Second operand 10 states. [2020-10-27 15:02:12,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:12,393 INFO L93 Difference]: Finished difference Result 150 states and 197 transitions. [2020-10-27 15:02:12,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:02:12,394 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-27 15:02:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:12,396 INFO L225 Difference]: With dead ends: 150 [2020-10-27 15:02:12,396 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 15:02:12,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-27 15:02:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 15:02:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2020-10-27 15:02:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-27 15:02:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2020-10-27 15:02:12,419 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 40 [2020-10-27 15:02:12,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:12,419 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2020-10-27 15:02:12,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 15:02:12,419 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2020-10-27 15:02:12,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 15:02:12,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:12,422 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:12,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:02:12,422 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:12,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1415950796, now seen corresponding path program 1 times [2020-10-27 15:02:12,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:12,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038697674] [2020-10-27 15:02:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 15:02:16,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:02:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4139 [2020-10-27 15:02:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 15:02:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:02:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:16,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:16,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:16,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:02:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:16,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:16,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:16,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:16,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 15:02:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:16,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:16,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:02:16,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:02:16,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 15:02:16,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 15:02:16,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038697674] [2020-10-27 15:02:16,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:16,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:02:16,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242995415] [2020-10-27 15:02:16,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:16,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:16,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:16,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:16,796 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand 9 states. [2020-10-27 15:02:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:17,972 INFO L93 Difference]: Finished difference Result 151 states and 199 transitions. [2020-10-27 15:02:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:02:17,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-27 15:02:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:17,975 INFO L225 Difference]: With dead ends: 151 [2020-10-27 15:02:17,975 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 15:02:17,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:02:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 15:02:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 103. [2020-10-27 15:02:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 15:02:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 132 transitions. [2020-10-27 15:02:18,001 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 132 transitions. Word has length 44 [2020-10-27 15:02:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:18,001 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 132 transitions. [2020-10-27 15:02:18,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 132 transitions. [2020-10-27 15:02:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 15:02:18,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:18,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:18,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:02:18,006 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1058425354, now seen corresponding path program 2 times [2020-10-27 15:02:18,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:18,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746410058] [2020-10-27 15:02:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:18,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:18,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 15:02:18,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 15:02:18,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:02:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 15:02:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 15:02:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:18,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:18,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:18,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:18,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:18,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:02:18,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:18,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:18,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:18,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:02:18,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:18,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:18,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:18,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:18,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:02:18,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:02:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 15:02:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:18,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:18,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:02:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:02:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 15:02:18,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746410058] [2020-10-27 15:02:18,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:02:18,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:02:18,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937848163] [2020-10-27 15:02:18,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:02:18,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:18,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:02:18,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:02:18,462 INFO L87 Difference]: Start difference. First operand 103 states and 132 transitions. Second operand 9 states. [2020-10-27 15:02:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:19,421 INFO L93 Difference]: Finished difference Result 175 states and 231 transitions. [2020-10-27 15:02:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:02:19,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-27 15:02:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:19,429 INFO L225 Difference]: With dead ends: 175 [2020-10-27 15:02:19,430 INFO L226 Difference]: Without dead ends: 142 [2020-10-27 15:02:19,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 15:02:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-27 15:02:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2020-10-27 15:02:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 15:02:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 164 transitions. [2020-10-27 15:02:19,485 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 164 transitions. Word has length 44 [2020-10-27 15:02:19,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:19,485 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 164 transitions. [2020-10-27 15:02:19,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:02:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 164 transitions. [2020-10-27 15:02:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 15:02:19,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:19,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:19,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:02:19,489 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:19,495 INFO L82 PathProgramCache]: Analyzing trace with hash 716582008, now seen corresponding path program 2 times [2020-10-27 15:02:19,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:19,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065531866] [2020-10-27 15:02:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:19,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 15:02:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-27 15:02:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:02:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 15:02:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:02:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:02:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:20,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:20,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:02:20,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:20,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:02:20,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:20,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:20,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:02:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:20,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:20,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:02:20,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:20,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:02:20,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:02:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:20,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:02:20,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:20,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 15:02:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:20,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:20,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:20,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:20,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:02:20,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:02:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:20,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 15:02:20,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:02:20,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 15:02:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:02:20,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:02:20,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:02:20,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:02:20,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:02:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:02:20,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:02:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:02:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:02:20,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:02:20,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:02:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 15:02:20,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065531866] [2020-10-27 15:02:20,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:02:20,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 15:02:20,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654070273] [2020-10-27 15:02:20,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 15:02:20,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:02:20,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 15:02:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:02:20,389 INFO L87 Difference]: Start difference. First operand 125 states and 164 transitions. Second operand 14 states. [2020-10-27 15:02:21,788 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 15:02:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:02:22,508 INFO L93 Difference]: Finished difference Result 222 states and 293 transitions. [2020-10-27 15:02:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 15:02:22,510 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-27 15:02:22,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:02:22,513 INFO L225 Difference]: With dead ends: 222 [2020-10-27 15:02:22,513 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 15:02:22,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-27 15:02:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 15:02:22,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 174. [2020-10-27 15:02:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-27 15:02:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 226 transitions. [2020-10-27 15:02:22,586 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 226 transitions. Word has length 44 [2020-10-27 15:02:22,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:02:22,586 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 226 transitions. [2020-10-27 15:02:22,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 15:02:22,587 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 226 transitions. [2020-10-27 15:02:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 15:02:22,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:02:22,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:02:22,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:02:22,589 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:02:22,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:02:22,589 INFO L82 PathProgramCache]: Analyzing trace with hash 698333876, now seen corresponding path program 1 times [2020-10-27 15:02:22,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:02:22,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516830494] [2020-10-27 15:02:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:02:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 15:02:22,615 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 15:02:22,615 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 15:02:22,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:02:22,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:02:22 BoogieIcfgContainer [2020-10-27 15:02:22,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 15:02:22,661 INFO L168 Benchmark]: Toolchain (without parser) took 21384.19 ms. Allocated memory was 159.4 MB in the beginning and 418.4 MB in the end (delta: 259.0 MB). Free memory was 134.5 MB in the beginning and 384.8 MB in the end (delta: -250.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:22,667 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 159.4 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 15:02:22,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.63 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 122.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:22,669 INFO L168 Benchmark]: Boogie Preprocessor took 50.59 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 120.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:22,670 INFO L168 Benchmark]: RCFGBuilder took 904.69 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 126.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. [2020-10-27 15:02:22,671 INFO L168 Benchmark]: TraceAbstraction took 20037.38 ms. Allocated memory was 159.4 MB in the beginning and 418.4 MB in the end (delta: 259.0 MB). Free memory was 126.4 MB in the beginning and 384.8 MB in the end (delta: -258.5 MB). Peak memory consumption was 541.3 kB. Max. memory is 8.0 GB. [2020-10-27 15:02:22,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 159.4 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 379.63 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 122.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.59 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 120.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 904.69 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 126.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20037.38 ms. Allocated memory was 159.4 MB in the beginning and 418.4 MB in the end (delta: 259.0 MB). Free memory was 126.4 MB in the beginning and 384.8 MB in the end (delta: -258.5 MB). Peak memory consumption was 541.3 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L233] CALL, EXPR base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] RET, EXPR base2flt(0, 0) [L233] zero = base2flt(0, 0) [L234] CALL, EXPR base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] RET, EXPR base2flt(ma, ea) [L234] a = base2flt(ma, ea) [L235] CALL, EXPR base2flt(mb, eb) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] RET, EXPR base2flt(mb, eb) [L235] b = base2flt(mb, eb) [L236] CALL addflt(a, b) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L106] CALL __VERIFIER_assert(ea >= eb) [L8] COND TRUE !(cond) [L9] CALL reach_error() [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 525 SDtfs, 674 SDslu, 891 SDs, 0 SdLazy, 4227 SolverSat, 214 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 123 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 332 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 36414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 102/116 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...