/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1251.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:45:04,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:45:04,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:45:04,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:45:04,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:45:04,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:45:04,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:45:04,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:45:04,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:45:04,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:45:04,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:45:04,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:45:04,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:45:04,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:45:04,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:45:04,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:45:04,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:45:04,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:45:04,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:45:04,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:45:04,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:45:04,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:45:04,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:45:04,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:45:04,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:45:04,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:45:04,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:45:04,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:45:04,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:45:04,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:45:04,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:45:04,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:45:04,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:45:04,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:45:04,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:45:04,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:45:04,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:45:04,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:45:04,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:45:04,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:45:04,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:45:04,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:45:04,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:45:04,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:45:04,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:45:04,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:45:04,398 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:45:04,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:45:04,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:45:04,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:45:04,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:45:04,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:45:04,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:45:04,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:45:04,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:45:04,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:45:04,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:45:04,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:45:04,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:45:04,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:45:04,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:45:04,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:45:04,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:45:04,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:45:04,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:45:04,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:45:04,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:45:04,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:45:04,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:45:04,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:45:04,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:45:04,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:45:04,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:45:04,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:45:04,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:45:04,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:45:04,908 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:45:04,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1251.c [2020-10-27 19:45:04,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6ab42afb/6aec7343efb4480cb657c106a91d6e96/FLAGb1f3bfc74 [2020-10-27 19:45:05,755 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:45:05,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1251.c [2020-10-27 19:45:05,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6ab42afb/6aec7343efb4480cb657c106a91d6e96/FLAGb1f3bfc74 [2020-10-27 19:45:06,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6ab42afb/6aec7343efb4480cb657c106a91d6e96 [2020-10-27 19:45:06,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:45:06,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:45:06,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:06,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:45:06,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:45:06,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f0405d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06, skipping insertion in model container [2020-10-27 19:45:06,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:45:06,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:45:06,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:06,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:45:06,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:06,370 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:45:06,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06 WrapperNode [2020-10-27 19:45:06,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:06,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:45:06,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:45:06,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:45:06,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:45:06,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:45:06,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:45:06,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:45:06,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:45:06,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:45:06,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:45:06,513 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:45:06,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-27 19:45:06,513 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-10-27 19:45:06,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-27 19:45:06,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:45:06,515 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:45:06,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:45:06,515 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-27 19:45:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:45:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:45:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:45:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-10-27 19:45:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-27 19:45:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:45:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:45:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:45:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:45:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:45:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:45:07,085 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:45:07,086 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 19:45:07,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:07 BoogieIcfgContainer [2020-10-27 19:45:07,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:45:07,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:45:07,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:45:07,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:45:07,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:45:06" (1/3) ... [2020-10-27 19:45:07,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efe2de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:07, skipping insertion in model container [2020-10-27 19:45:07,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (2/3) ... [2020-10-27 19:45:07,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efe2de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:07, skipping insertion in model container [2020-10-27 19:45:07,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:07" (3/3) ... [2020-10-27 19:45:07,098 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-10-27 19:45:07,113 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:45:07,119 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:45:07,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:45:07,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:45:07,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:45:07,171 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:45:07,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:45:07,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:45:07,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:45:07,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:45:07,172 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:45:07,195 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-27 19:45:07,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 19:45:07,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:07,206 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] [2020-10-27 19:45:07,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:07,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:07,215 INFO L82 PathProgramCache]: Analyzing trace with hash -903014656, now seen corresponding path program 1 times [2020-10-27 19:45:07,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:07,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239518511] [2020-10-27 19:45:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 19:45:08,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:45:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-27 19:45:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:45:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 19:45:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:45:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:45:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:08,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:45:08,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:08,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:08,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:45:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 19:45:09,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:45:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 19:45:09,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 19:45:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:09,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:45:09,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 19:45:09,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:09,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:45:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 19:45:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:09,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:45:09,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:45:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:45:09,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239518511] [2020-10-27 19:45:09,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:09,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:09,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869741767] [2020-10-27 19:45:09,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:09,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:09,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:09,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:09,160 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 6 states. [2020-10-27 19:45:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:09,666 INFO L93 Difference]: Finished difference Result 117 states and 162 transitions. [2020-10-27 19:45:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:45:09,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-27 19:45:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:09,680 INFO L225 Difference]: With dead ends: 117 [2020-10-27 19:45:09,681 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 19:45:09,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 19:45:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-27 19:45:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 19:45:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2020-10-27 19:45:09,751 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 37 [2020-10-27 19:45:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:09,754 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2020-10-27 19:45:09,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2020-10-27 19:45:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 19:45:09,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:09,757 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, 1] [2020-10-27 19:45:09,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:45:09,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:09,759 INFO L82 PathProgramCache]: Analyzing trace with hash -662582185, now seen corresponding path program 1 times [2020-10-27 19:45:09,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:09,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125431925] [2020-10-27 19:45:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:45:10,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:45:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-27 19:45:10,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 19:45:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:10,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:45:10,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:10,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 19:45:10,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:10,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:45:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 19:45:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:45:10,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 19:45:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:45:10,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:45:10,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:45:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 19:45:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:10,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:45:10,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 19:45:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:10,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:45:10,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:10,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:10,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 19:45:10,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125431925] [2020-10-27 19:45:10,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:10,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:10,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896351194] [2020-10-27 19:45:10,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:10,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:10,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:10,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:10,410 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand 6 states. [2020-10-27 19:45:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:10,716 INFO L93 Difference]: Finished difference Result 89 states and 116 transitions. [2020-10-27 19:45:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:10,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-27 19:45:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:10,720 INFO L225 Difference]: With dead ends: 89 [2020-10-27 19:45:10,721 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 19:45:10,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 19:45:10,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-27 19:45:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 19:45:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2020-10-27 19:45:10,738 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 43 [2020-10-27 19:45:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:10,739 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2020-10-27 19:45:10,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2020-10-27 19:45:10,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 19:45:10,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:10,741 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, 1, 1] [2020-10-27 19:45:10,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:45:10,742 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:10,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1244354796, now seen corresponding path program 1 times [2020-10-27 19:45:10,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:10,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914067987] [2020-10-27 19:45:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:11,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 19:45:11,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:45:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-27 19:45:11,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 19:45:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:11,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:11,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:45:11,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:11,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:11,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:11,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:11,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:11,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 19:45:11,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:45:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:11,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 19:45:11,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:45:11,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 19:45:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:11,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:45:11,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:11,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 19:45:11,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:45:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 19:45:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:11,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:11,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 19:45:11,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:11,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:11,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:11,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:11,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 19:45:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:11,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:11,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 19:45:11,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 19:45:11,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914067987] [2020-10-27 19:45:11,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:11,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:11,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8882763] [2020-10-27 19:45:11,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:11,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:11,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:11,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:11,424 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand 6 states. [2020-10-27 19:45:11,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:11,736 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2020-10-27 19:45:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:11,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-27 19:45:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:11,739 INFO L225 Difference]: With dead ends: 93 [2020-10-27 19:45:11,739 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 19:45:11,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 19:45:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-27 19:45:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 19:45:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2020-10-27 19:45:11,764 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 44 [2020-10-27 19:45:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:11,766 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2020-10-27 19:45:11,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2020-10-27 19:45:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 19:45:11,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:11,771 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, 1, 1, 1] [2020-10-27 19:45:11,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:45:11,771 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:11,772 INFO L82 PathProgramCache]: Analyzing trace with hash 667568499, now seen corresponding path program 1 times [2020-10-27 19:45:11,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:11,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434531701] [2020-10-27 19:45:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:12,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 19:45:12,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:45:12,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-27 19:45:12,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 19:45:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:12,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:12,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:45:12,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:12,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:12,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 19:45:12,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:45:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:12,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:45:12,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:12,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 19:45:12,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:45:12,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:12,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:12,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:12,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:45:12,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:12,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:45:12,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:45:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:12,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 19:45:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:12,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:12,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:12,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:45:12,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 19:45:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:12,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:12,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:12,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 19:45:12,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 19:45:12,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434531701] [2020-10-27 19:45:12,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:12,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:12,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674916099] [2020-10-27 19:45:12,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:12,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:12,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:12,547 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand 6 states. [2020-10-27 19:45:12,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:12,846 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2020-10-27 19:45:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:12,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-27 19:45:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:12,848 INFO L225 Difference]: With dead ends: 93 [2020-10-27 19:45:12,848 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 19:45:12,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:12,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 19:45:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-27 19:45:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 19:45:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2020-10-27 19:45:12,861 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 45 [2020-10-27 19:45:12,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:12,861 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2020-10-27 19:45:12,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:12,862 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2020-10-27 19:45:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 19:45:12,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:12,863 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, 1, 1, 1, 1] [2020-10-27 19:45:12,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:45:12,864 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:12,864 INFO L82 PathProgramCache]: Analyzing trace with hash 404771912, now seen corresponding path program 1 times [2020-10-27 19:45:12,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:12,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235076445] [2020-10-27 19:45:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:13,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 19:45:13,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:45:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-27 19:45:13,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 19:45:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:13,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:13,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:13,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:45:13,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:13,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:13,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:45:13,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:45:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:13,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 19:45:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 19:45:13,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:45:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:13,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:13,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 19:45:13,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:13,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:45:13,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 19:45:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:13,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 19:45:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:13,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:13,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:13,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:13,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:45:13,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:13,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:13,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:13,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:13,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 19:45:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:13,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:13,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:13,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:45:13,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:13,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:13,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:13,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 19:45:13,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235076445] [2020-10-27 19:45:13,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:13,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:13,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719214104] [2020-10-27 19:45:13,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:13,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:13,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:13,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:13,562 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand 6 states. [2020-10-27 19:45:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:13,823 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2020-10-27 19:45:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:13,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 19:45:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:13,825 INFO L225 Difference]: With dead ends: 93 [2020-10-27 19:45:13,825 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 19:45:13,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 19:45:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-27 19:45:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 19:45:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2020-10-27 19:45:13,836 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 46 [2020-10-27 19:45:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:13,837 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2020-10-27 19:45:13,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2020-10-27 19:45:13,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 19:45:13,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:13,839 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, 1, 1, 1, 1] [2020-10-27 19:45:13,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:45:13,839 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:13,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:13,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1633284377, now seen corresponding path program 1 times [2020-10-27 19:45:13,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:13,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764765295] [2020-10-27 19:45:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:13,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:13,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 19:45:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 19:45:13,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 19:45:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 19:45:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:14,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:14,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:45:14,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:14,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:14,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 19:45:14,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:45:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:14,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:14,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:14,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 19:45:14,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:14,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:45:14,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 19:45:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:14,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:14,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:14,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 19:45:14,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:45:14,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:14,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:14,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:14,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 19:45:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:14,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:14,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:14,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:45:14,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 19:45:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:14,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:14,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:14,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:14,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:45:14,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:45:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 19:45:14,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764765295] [2020-10-27 19:45:14,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:14,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:14,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412679905] [2020-10-27 19:45:14,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:14,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:14,112 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand 6 states. [2020-10-27 19:45:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:14,508 INFO L93 Difference]: Finished difference Result 122 states and 161 transitions. [2020-10-27 19:45:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:45:14,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 19:45:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:14,510 INFO L225 Difference]: With dead ends: 122 [2020-10-27 19:45:14,510 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 19:45:14,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:45:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 19:45:14,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2020-10-27 19:45:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 19:45:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2020-10-27 19:45:14,521 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 46 [2020-10-27 19:45:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:14,522 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2020-10-27 19:45:14,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2020-10-27 19:45:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 19:45:14,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:14,523 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, 1] [2020-10-27 19:45:14,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:45:14,524 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:14,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1664205567, now seen corresponding path program 1 times [2020-10-27 19:45:14,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:14,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733465416] [2020-10-27 19:45:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:45:14,544 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:45:14,544 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:45:14,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:45:14,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:45:14 BoogieIcfgContainer [2020-10-27 19:45:14,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:45:14,571 INFO L168 Benchmark]: Toolchain (without parser) took 8486.08 ms. Allocated memory was 155.2 MB in the beginning and 238.0 MB in the end (delta: 82.8 MB). Free memory was 131.1 MB in the beginning and 108.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 107.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:14,572 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 155.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:14,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.49 ms. Allocated memory is still 155.2 MB. Free memory was 130.6 MB in the beginning and 120.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:14,573 INFO L168 Benchmark]: Boogie Preprocessor took 48.32 ms. Allocated memory is still 155.2 MB. Free memory was 120.6 MB in the beginning and 118.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:14,574 INFO L168 Benchmark]: RCFGBuilder took 666.82 ms. Allocated memory is still 155.2 MB. Free memory was 118.6 MB in the beginning and 95.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:14,575 INFO L168 Benchmark]: TraceAbstraction took 7478.24 ms. Allocated memory was 155.2 MB in the beginning and 238.0 MB in the end (delta: 82.8 MB). Free memory was 95.0 MB in the beginning and 108.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:14,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 155.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.49 ms. Allocated memory is still 155.2 MB. Free memory was 130.6 MB in the beginning and 120.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.32 ms. Allocated memory is still 155.2 MB. Free memory was 120.6 MB in the beginning and 118.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 666.82 ms. Allocated memory is still 155.2 MB. Free memory was 118.6 MB in the beginning and 95.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7478.24 ms. Allocated memory was 155.2 MB in the beginning and 238.0 MB in the end (delta: 82.8 MB). Free memory was 95.0 MB in the beginning and 108.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L69] CALL, EXPR isnan_float(x) [L57] return x != x; [L69] RET, EXPR isnan_float(x) [L69] EXPR isnan_float(x) && !isnan_float(y) [L69] CALL, EXPR isnan_float(y) [L57] return x != x; [L69] RET, EXPR isnan_float(y) [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L72] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] RET, EXPR __fpclassify_float(x) [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] RET, EXPR fmax_float(x, y) [L72] float res = fmax_float(x, y); [L75] CALL, EXPR isnan_float(x) [L57] return x != x; [L75] RET, EXPR isnan_float(x) [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] CALL, EXPR isnan_float(y) [L57] return x != x; [L75] RET, EXPR isnan_float(y) [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L76] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1251.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.3s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 456 SDtfs, 264 SDslu, 868 SDs, 0 SdLazy, 711 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred 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, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 26679 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 48/48 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...