/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:37:29,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:37:29,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:37:29,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:37:29,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:37:29,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:37:29,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:37:29,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:37:29,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:37:29,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:37:29,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:37:29,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:37:29,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:37:29,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:37:29,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:37:29,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:37:29,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:37:29,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:37:29,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:37:29,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:37:29,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:37:29,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:37:29,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:37:29,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:37:29,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:37:29,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:37:29,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:37:29,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:37:29,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:37:29,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:37:29,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:37:29,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:37:29,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:37:29,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:37:29,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:37:29,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:37:29,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:37:29,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:37:29,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:37:29,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:37:29,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:37:29,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:37:29,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:37:29,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:37:29,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:37:29,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:37:29,883 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:37:29,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:37:29,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:37:29,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:37:29,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:37:29,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:37:29,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:37:29,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:37:29,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:37:29,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:37:29,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:37:29,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:37:29,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:37:29,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:37:29,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:37:29,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:37:29,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:37:29,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:37:29,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:37:29,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:37:29,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:37:29,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:37:29,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:37:29,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:37:29,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:37:29,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:37:30,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:37:30,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:37:30,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:37:30,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:37:30,400 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:37:30,401 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-09-24 22:37:30,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9182c5ed/30b329f65a01463fad9effcfe14427ba/FLAGc8981734f [2020-09-24 22:37:31,055 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:37:31,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-09-24 22:37:31,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9182c5ed/30b329f65a01463fad9effcfe14427ba/FLAGc8981734f [2020-09-24 22:37:31,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9182c5ed/30b329f65a01463fad9effcfe14427ba [2020-09-24 22:37:31,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:37:31,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:37:31,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:37:31,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:37:31,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:37:31,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53afdaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31, skipping insertion in model container [2020-09-24 22:37:31,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:37:31,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:37:31,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:37:31,726 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:37:31,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:37:31,789 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:37:31,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31 WrapperNode [2020-09-24 22:37:31,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:37:31,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:37:31,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:37:31,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:37:31,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (1/1) ... [2020-09-24 22:37:31,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:37:31,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:37:31,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:37:31,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:37:31,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (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 [2020-09-24 22:37:32,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:37:32,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:37:32,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-24 22:37:32,051 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-24 22:37:32,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-24 22:37:32,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:37:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:37:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 22:37:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-24 22:37:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:37:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 22:37:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:37:32,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:37:32,053 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-24 22:37:32,053 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-24 22:37:32,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:37:32,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:37:32,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:37:32,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:37:32,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 22:37:32,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:37:32,494 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 22:37:32,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:32 BoogieIcfgContainer [2020-09-24 22:37:32,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:37:32,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:37:32,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:37:32,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:37:32,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:37:31" (1/3) ... [2020-09-24 22:37:32,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e78053b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:32, skipping insertion in model container [2020-09-24 22:37:32,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:31" (2/3) ... [2020-09-24 22:37:32,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e78053b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:32, skipping insertion in model container [2020-09-24 22:37:32,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:32" (3/3) ... [2020-09-24 22:37:32,509 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-09-24 22:37:32,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:37:32,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:37:32,547 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:37:32,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:37:32,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:37:32,576 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:37:32,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:37:32,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:37:32,577 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:37:32,577 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:37:32,577 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:37:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-24 22:37:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:37:32,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:32,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:32,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:32,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:32,623 INFO L82 PathProgramCache]: Analyzing trace with hash -380814032, now seen corresponding path program 1 times [2020-09-24 22:37:32,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:32,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52135526] [2020-09-24 22:37:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:33,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 22:37:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:37:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-24 22:37:33,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 22:37:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:37:33,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:37:33,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:37:33,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:33,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:37:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:33,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:33,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:37:33,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:37:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 22:37:33,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 22:37:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:37:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:33,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:33,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:33,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:37:33,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:37:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 22:37:33,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 22:37:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:33,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:37:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:37:33,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52135526] [2020-09-24 22:37:33,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:37:33,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:37:33,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102847042] [2020-09-24 22:37:33,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:37:33,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:33,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:37:33,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:37:33,437 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 5 states. [2020-09-24 22:37:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:33,802 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-09-24 22:37:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:37:33,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 22:37:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:33,823 INFO L225 Difference]: With dead ends: 164 [2020-09-24 22:37:33,824 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 22:37:33,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:37:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 22:37:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-24 22:37:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 22:37:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-09-24 22:37:33,923 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34 [2020-09-24 22:37:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:33,925 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-09-24 22:37:33,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:37:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-09-24 22:37:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 22:37:33,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:33,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:33,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:37:33,933 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:33,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:33,935 INFO L82 PathProgramCache]: Analyzing trace with hash 133434162, now seen corresponding path program 1 times [2020-09-24 22:37:33,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:33,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504394427] [2020-09-24 22:37:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:34,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:34,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:34,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:37:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 22:37:34,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 22:37:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:34,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:34,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:34,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:37:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:37:34,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:34,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:37:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:37:34,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 22:37:34,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 22:37:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:34,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:37:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:34,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:34,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 22:37:34,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 22:37:34,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:37:34,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:37:34,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504394427] [2020-09-24 22:37:34,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:37:34,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:37:34,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804267492] [2020-09-24 22:37:34,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:37:34,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:34,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:37:34,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:37:34,452 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states. [2020-09-24 22:37:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:34,659 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-09-24 22:37:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:37:34,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 22:37:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:34,664 INFO L225 Difference]: With dead ends: 117 [2020-09-24 22:37:34,664 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 22:37:34,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:37:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 22:37:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-09-24 22:37:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 22:37:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 22:37:34,682 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2020-09-24 22:37:34,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:34,682 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 22:37:34,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:37:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 22:37:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 22:37:34,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:34,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:34,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:37:34,685 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:34,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:34,685 INFO L82 PathProgramCache]: Analyzing trace with hash -77971218, now seen corresponding path program 1 times [2020-09-24 22:37:34,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:34,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739382282] [2020-09-24 22:37:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:34,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:34,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:37:34,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 22:37:34,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 22:37:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:37:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:37:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:37:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:34,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:34,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:37:34,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:34,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 22:37:34,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:37:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:34,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:37:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:35,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:35,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:35,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:37:35,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:35,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 22:37:35,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:35,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:35,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:37:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:37:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:37:35,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739382282] [2020-09-24 22:37:35,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:37:35,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:37:35,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488630552] [2020-09-24 22:37:35,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:37:35,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:35,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:37:35,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:37:35,124 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 22:37:35,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:35,361 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-24 22:37:35,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:37:35,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-09-24 22:37:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:35,364 INFO L225 Difference]: With dead ends: 121 [2020-09-24 22:37:35,364 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 22:37:35,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:37:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 22:37:35,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-24 22:37:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 22:37:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 22:37:35,386 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 44 [2020-09-24 22:37:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:35,387 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 22:37:35,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:37:35,387 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 22:37:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 22:37:35,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:35,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:35,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:37:35,396 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:35,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:35,397 INFO L82 PathProgramCache]: Analyzing trace with hash 135010487, now seen corresponding path program 1 times [2020-09-24 22:37:35,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:35,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564036475] [2020-09-24 22:37:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:35,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:35,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:37:35,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:35,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 22:37:35,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 22:37:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:35,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:35,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:35,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:37:35,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:37:35,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:37:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:35,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 22:37:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 22:37:35,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:37:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:37:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:35,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:35,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 22:37:35,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 22:37:35,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 22:37:35,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:37:35,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564036475] [2020-09-24 22:37:35,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:37:35,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:37:35,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917297717] [2020-09-24 22:37:35,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:37:35,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:35,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:37:35,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:37:35,845 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 22:37:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:36,041 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2020-09-24 22:37:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:37:36,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-09-24 22:37:36,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:36,044 INFO L225 Difference]: With dead ends: 125 [2020-09-24 22:37:36,045 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 22:37:36,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:37:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 22:37:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-09-24 22:37:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 22:37:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 22:37:36,055 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 45 [2020-09-24 22:37:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:36,056 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 22:37:36,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:37:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 22:37:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 22:37:36,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:36,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:36,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:37:36,058 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:36,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:36,058 INFO L82 PathProgramCache]: Analyzing trace with hash 619089939, now seen corresponding path program 1 times [2020-09-24 22:37:36,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:36,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402482013] [2020-09-24 22:37:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:36,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:36,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 22:37:36,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 22:37:36,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 22:37:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:36,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:36,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:36,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:37:36,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:36,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:37:36,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:37:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:37:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:36,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:36,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:37:36,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 22:37:36,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:37:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:37:36,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 22:37:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:36,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:36,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:37:36,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 22:37:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:37:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:37:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:37:36,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402482013] [2020-09-24 22:37:36,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:37:36,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:37:36,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126664] [2020-09-24 22:37:36,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:37:36,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:36,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:37:36,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:37:36,437 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 22:37:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:36,625 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-24 22:37:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:37:36,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-24 22:37:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:36,627 INFO L225 Difference]: With dead ends: 121 [2020-09-24 22:37:36,627 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 22:37:36,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:37:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 22:37:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-24 22:37:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 22:37:36,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 22:37:36,637 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46 [2020-09-24 22:37:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:36,637 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 22:37:36,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:37:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 22:37:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 22:37:36,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:36,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:36,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:37:36,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1331564627, now seen corresponding path program 1 times [2020-09-24 22:37:36,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:36,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546962068] [2020-09-24 22:37:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:37:36,658 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:37:36,659 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:37:36,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:37:36,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:37:36 BoogieIcfgContainer [2020-09-24 22:37:36,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:37:36,691 INFO L168 Benchmark]: Toolchain (without parser) took 5277.69 ms. Allocated memory was 141.0 MB in the beginning and 244.3 MB in the end (delta: 103.3 MB). Free memory was 103.2 MB in the beginning and 135.3 MB in the end (delta: -32.0 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:36,692 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 22:37:36,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.05 ms. Allocated memory is still 141.0 MB. Free memory was 102.6 MB in the beginning and 91.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:36,694 INFO L168 Benchmark]: Boogie Preprocessor took 184.39 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 182.3 MB in the end (delta: -91.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:36,695 INFO L168 Benchmark]: RCFGBuilder took 524.17 ms. Allocated memory is still 205.0 MB. Free memory was 182.3 MB in the beginning and 159.1 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:36,695 INFO L168 Benchmark]: TraceAbstraction took 4185.97 ms. Allocated memory was 205.0 MB in the beginning and 244.3 MB in the end (delta: 39.3 MB). Free memory was 158.5 MB in the beginning and 135.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:36,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.05 ms. Allocated memory is still 141.0 MB. Free memory was 102.6 MB in the beginning and 91.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.39 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 182.3 MB in the end (delta: -91.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 524.17 ms. Allocated memory is still 205.0 MB. Free memory was 182.3 MB in the beginning and 159.1 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4185.97 ms. Allocated memory was 205.0 MB in the beginning and 244.3 MB in the end (delta: 39.3 MB). Free memory was 158.5 MB in the beginning and 135.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L66] CALL, EXPR fmin_float(x, y) [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] RET, EXPR __fpclassify_float(x) [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] RET, EXPR fmin_float(x, y) [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 441 SDtfs, 89 SDslu, 994 SDs, 0 SdLazy, 628 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 17354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...