/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 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=NARROWEST --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 -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1251.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:20:26,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:20:26,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:20:26,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:20:26,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:20:26,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:20:26,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:20:26,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:20:26,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:20:26,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:20:26,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:20:26,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:20:26,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:20:26,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:20:26,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:20:26,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:20:26,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:20:26,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:20:26,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:20:26,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:20:26,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:20:26,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:20:26,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:20:26,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:20:26,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:20:26,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:20:26,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:20:26,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:20:26,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:20:26,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:20:26,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:20:26,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:20:26,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:20:26,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:20:26,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:20:26,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:20:26,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:20:26,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:20:26,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:20:26,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:20:26,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:20:26,117 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 [2020-10-13 10:20:26,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:20:26,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:20:26,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:20:26,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:20:26,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:20:26,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:20:26,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:20:26,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:20:26,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:20:26,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:20:26,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:20:26,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:20:26,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:20:26,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:20:26,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:20:26,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:20:26,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:20:26,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:20:26,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:20:26,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:20:26,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:20:26,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:26,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:20:26,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:20:26,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:20:26,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:20:26,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:20:26,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:20:26,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:20:26,166 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 -> 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:20:26,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:20:26,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:20:26,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:20:26,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:20:26,527 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:20:26,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1251.c [2020-10-13 10:20:26,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a457c3b8d/2173d579e07941e08c6e723427973f67/FLAGe3f58ef7a [2020-10-13 10:20:27,026 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:20:27,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1251.c [2020-10-13 10:20:27,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a457c3b8d/2173d579e07941e08c6e723427973f67/FLAGe3f58ef7a [2020-10-13 10:20:27,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a457c3b8d/2173d579e07941e08c6e723427973f67 [2020-10-13 10:20:27,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:20:27,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:20:27,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:27,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:20:27,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:20:27,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e21b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27, skipping insertion in model container [2020-10-13 10:20:27,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:20:27,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:20:27,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:27,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:20:27,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:27,776 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:20:27,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27 WrapperNode [2020-10-13 10:20:27,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:27,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:20:27,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:20:27,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:20:27,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (1/1) ... [2020-10-13 10:20:27,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:20:27,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:20:27,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:20:27,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:20:27,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (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 [2020-10-13 10:20:27,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:20:27,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:20:27,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-13 10:20:27,890 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-10-13 10:20:27,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-13 10:20:27,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:20:27,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:20:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:20:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-13 10:20:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:20:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:20:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:20:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:20:27,891 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-10-13 10:20:27,892 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-13 10:20:27,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:20:27,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:20:27,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:20:27,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:20:27,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:20:28,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:20:28,302 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 10:20:28,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:28 BoogieIcfgContainer [2020-10-13 10:20:28,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:20:28,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:20:28,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:20:28,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:20:28,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:20:27" (1/3) ... [2020-10-13 10:20:28,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a958e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:28, skipping insertion in model container [2020-10-13 10:20:28,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:27" (2/3) ... [2020-10-13 10:20:28,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a958e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:28, skipping insertion in model container [2020-10-13 10:20:28,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:28" (3/3) ... [2020-10-13 10:20:28,316 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-10-13 10:20:28,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:20:28,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 10:20:28,352 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 10:20:28,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:20:28,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:20:28,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:20:28,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:20:28,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:20:28,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:20:28,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:20:28,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:20:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-13 10:20:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:20:28,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:28,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:20:28,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:28,425 INFO L82 PathProgramCache]: Analyzing trace with hash 387930980, now seen corresponding path program 1 times [2020-10-13 10:20:28,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:28,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408086635] [2020-10-13 10:20:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:20:29,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:20:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-13 10:20:29,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 10:20:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:29,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:20:29,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:29,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:20:29,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:20:29,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:29,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:20:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:20:29,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 10:20:29,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:20:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:29,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:29,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:20:29,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:20:29,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:20:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:29,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:20:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:29,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:29,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:29,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:29,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:29,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:20:29,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408086635] [2020-10-13 10:20:29,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:29,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:20:29,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352536708] [2020-10-13 10:20:29,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:20:29,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:29,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:20:29,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:20:29,892 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-10-13 10:20:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:30,140 INFO L93 Difference]: Finished difference Result 112 states and 153 transitions. [2020-10-13 10:20:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:20:30,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-13 10:20:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:30,153 INFO L225 Difference]: With dead ends: 112 [2020-10-13 10:20:30,153 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 10:20:30,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:20:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 10:20:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-13 10:20:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 10:20:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2020-10-13 10:20:30,214 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 36 [2020-10-13 10:20:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:30,216 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2020-10-13 10:20:30,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:20:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2020-10-13 10:20:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:20:30,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:30,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:20:30,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:20:30,220 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:30,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1722820585, now seen corresponding path program 1 times [2020-10-13 10:20:30,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:30,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862536939] [2020-10-13 10:20:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:20:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:20:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-13 10:20:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:20:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 10:20:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:20:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:30,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:30,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:20:30,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:30,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:30,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:30,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:20:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:20:30,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 10:20:30,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:20:30,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:20:30,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:20:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:30,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:30,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:20:30,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:20:30,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862536939] [2020-10-13 10:20:30,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:30,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:20:30,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881530671] [2020-10-13 10:20:30,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:20:30,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:30,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:20:30,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:20:30,839 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 5 states. [2020-10-13 10:20:31,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:31,159 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-10-13 10:20:31,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:20:31,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-13 10:20:31,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:31,162 INFO L225 Difference]: With dead ends: 64 [2020-10-13 10:20:31,162 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 10:20:31,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:20:31,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 10:20:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-13 10:20:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 10:20:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2020-10-13 10:20:31,178 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 37 [2020-10-13 10:20:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:31,179 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2020-10-13 10:20:31,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:20:31,179 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2020-10-13 10:20:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 10:20:31,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:31,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:20:31,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:20:31,182 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:31,183 INFO L82 PathProgramCache]: Analyzing trace with hash -355035771, now seen corresponding path program 1 times [2020-10-13 10:20:31,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:31,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708336885] [2020-10-13 10:20:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:31,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:20:31,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:20:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-13 10:20:31,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 10:20:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:20:31,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:31,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:31,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:31,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:31,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:20:31,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:31,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:31,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:31,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:31,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:20:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:31,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:20:31,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:31,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 10:20:31,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:20:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:31,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:20:31,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:20:31,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:31,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:31,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:20:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:31,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:31,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:31,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:31,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:20:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:31,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:20:31,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:31,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 10:20:31,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708336885] [2020-10-13 10:20:31,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:31,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:20:31,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376713874] [2020-10-13 10:20:31,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:20:31,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:20:31,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:20:31,712 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand 6 states. [2020-10-13 10:20:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:32,126 INFO L93 Difference]: Finished difference Result 114 states and 149 transitions. [2020-10-13 10:20:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:20:32,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-10-13 10:20:32,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:32,128 INFO L225 Difference]: With dead ends: 114 [2020-10-13 10:20:32,129 INFO L226 Difference]: Without dead ends: 71 [2020-10-13 10:20:32,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:20:32,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-13 10:20:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2020-10-13 10:20:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-13 10:20:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-10-13 10:20:32,141 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 42 [2020-10-13 10:20:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:32,142 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-10-13 10:20:32,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:20:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-10-13 10:20:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:20:32,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:32,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-13 10:20:32,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:20:32,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:32,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:32,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1104303250, now seen corresponding path program 1 times [2020-10-13 10:20:32,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:32,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014191332] [2020-10-13 10:20:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:20:32,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 10:20:32,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:20:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:32,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:20:32,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:20:32,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:20:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:20:32,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-13 10:20:32,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:20:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:20:32,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 10:20:32,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:20:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:32,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:20:32,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:20:32,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:32,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:32,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:20:32,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:20:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:32,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:32,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:20:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:20:32,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 10:20:32,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014191332] [2020-10-13 10:20:32,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:32,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:20:32,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228154283] [2020-10-13 10:20:32,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:20:32,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:20:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:20:32,398 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 6 states. [2020-10-13 10:20:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:32,728 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-10-13 10:20:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:20:32,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-13 10:20:32,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:32,732 INFO L225 Difference]: With dead ends: 91 [2020-10-13 10:20:32,732 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 10:20:32,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:20:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 10:20:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-13 10:20:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 10:20:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2020-10-13 10:20:32,743 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 47 [2020-10-13 10:20:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:32,743 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2020-10-13 10:20:32,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:20:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2020-10-13 10:20:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:20:32,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:32,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-13 10:20:32,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:20:32,746 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:32,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1134064996, now seen corresponding path program 1 times [2020-10-13 10:20:32,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:32,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342672602] [2020-10-13 10:20:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:20:32,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 10:20:32,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 10:20:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:32,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:20:32,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:20:32,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:20:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:20:32,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:20:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:20:32,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:20:32,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:20:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:20:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:20:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:20:32,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 10:20:32,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:20:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:20:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:20:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:20:32,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:20:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:32,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:32,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:32,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:20:32,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 10:20:32,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342672602] [2020-10-13 10:20:32,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:32,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:20:32,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462228969] [2020-10-13 10:20:32,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:20:32,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:32,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:20:32,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:20:32,986 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand 6 states. [2020-10-13 10:20:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:33,311 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2020-10-13 10:20:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:20:33,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-13 10:20:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:33,314 INFO L225 Difference]: With dead ends: 95 [2020-10-13 10:20:33,314 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 10:20:33,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:20:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 10:20:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-13 10:20:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 10:20:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2020-10-13 10:20:33,326 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 50 [2020-10-13 10:20:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:33,327 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2020-10-13 10:20:33,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:20:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2020-10-13 10:20:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:20:33,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:33,329 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-13 10:20:33,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:20:33,329 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:33,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1345415909, now seen corresponding path program 1 times [2020-10-13 10:20:33,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:33,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673203900] [2020-10-13 10:20:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:20:33,362 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:20:33,362 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:20:33,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:20:33,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:20:33 BoogieIcfgContainer [2020-10-13 10:20:33,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:20:33,395 INFO L168 Benchmark]: Toolchain (without parser) took 6001.79 ms. Allocated memory was 137.9 MB in the beginning and 296.7 MB in the end (delta: 158.9 MB). Free memory was 101.1 MB in the beginning and 264.6 MB in the end (delta: -163.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:33,397 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:33,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.00 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 180.0 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:33,404 INFO L168 Benchmark]: Boogie Preprocessor took 45.36 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 177.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:33,406 INFO L168 Benchmark]: RCFGBuilder took 484.08 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 154.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:33,406 INFO L168 Benchmark]: TraceAbstraction took 5082.96 ms. Allocated memory was 201.3 MB in the beginning and 296.7 MB in the end (delta: 95.4 MB). Free memory was 153.5 MB in the beginning and 264.6 MB in the end (delta: -111.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:33,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 384.00 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 180.0 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.36 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 177.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.08 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 154.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5082.96 ms. Allocated memory was 201.3 MB in the beginning and 296.7 MB in the end (delta: 95.4 MB). Free memory was 153.5 MB in the beginning and 264.6 MB in the end (delta: -111.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73. Possible FailurePath: [L64] float x = __VERIFIER_nondet_float(); [L65] float y = __VERIFIER_nondet_float(); [L67] CALL, EXPR isnan_float(x) [L55] return x != x; [L67] RET, EXPR isnan_float(x) [L67] EXPR isnan_float(x) && !isnan_float(y) [L67] CALL, EXPR isnan_float(y) [L55] return x != x; [L67] RET, EXPR isnan_float(y) [L67] EXPR isnan_float(x) && !isnan_float(y) [L67-L68] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L67-L68] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70] CALL, EXPR fmax_float(x, y) [L44] CALL, EXPR __fpclassify_float(x) [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; [L44] RET, EXPR __fpclassify_float(x) [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; [L70] RET, EXPR fmax_float(x, y) [L70] float res = fmax_float(x, y); [L73] CALL, EXPR isnan_float(x) [L55] return x != x; [L73] RET, EXPR isnan_float(x) [L73] EXPR isnan_float(x) && !isnan_float(y) [L73] CALL, EXPR isnan_float(y) [L55] return x != x; [L73] RET, EXPR isnan_float(y) [L73] EXPR isnan_float(x) && !isnan_float(y) [L73] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L74] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 338 SDtfs, 391 SDslu, 122 SDs, 0 SdLazy, 762 SolverSat, 197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 16820 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 51/51 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...