/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_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:45:02,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:45:02,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:45:02,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:45:02,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:45:02,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:45:02,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:45:02,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:45:02,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:45:02,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:45:02,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:45:02,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:45:02,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:45:02,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:45:02,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:45:02,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:45:02,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:45:02,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:45:02,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:45:02,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:45:02,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:45:02,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:45:02,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:45:02,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:45:02,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:45:02,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:45:02,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:45:02,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:45:02,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:45:02,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:45:02,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:45:02,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:45:02,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:45:02,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:45:02,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:45:02,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:45:02,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:45:02,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:45:02,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:45:02,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:45:02,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:45:02,346 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 19:45:02,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:45:02,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:45:02,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:45:02,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:45:02,379 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:45:02,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:45:02,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:45:02,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:45:02,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:45:02,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:45:02,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:45:02,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:45:02,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:45:02,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:45:02,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:45:02,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:45:02,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:45:02,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:45:02,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:45:02,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:45:02,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:45:02,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:45:02,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:45:02,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:45:02,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:45:02,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:45:02,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:45:02,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:45:02,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:45:02,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:45:02,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:45:02,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:45:02,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:45:02,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:45:02,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:45:02,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-10-27 19:45:02,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93b95e722/d8aafcddcda3436f9929e860ff44bf7b/FLAG7d820fd47 [2020-10-27 19:45:03,519 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:45:03,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-10-27 19:45:03,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93b95e722/d8aafcddcda3436f9929e860ff44bf7b/FLAG7d820fd47 [2020-10-27 19:45:03,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93b95e722/d8aafcddcda3436f9929e860ff44bf7b [2020-10-27 19:45:03,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:45:03,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:45:03,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:03,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:45:03,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:45:03,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:03" (1/1) ... [2020-10-27 19:45:03,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce151cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:03, skipping insertion in model container [2020-10-27 19:45:03,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:03" (1/1) ... [2020-10-27 19:45:03,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:45:03,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:45:04,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:04,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:45:04,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:04,261 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:45:04,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04 WrapperNode [2020-10-27 19:45:04,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:04,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:45:04,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:45:04,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:45:04,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (1/1) ... [2020-10-27 19:45:04,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (1/1) ... [2020-10-27 19:45:04,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (1/1) ... [2020-10-27 19:45:04,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (1/1) ... [2020-10-27 19:45:04,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (1/1) ... [2020-10-27 19:45:04,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (1/1) ... [2020-10-27 19:45:04,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (1/1) ... [2020-10-27 19:45:04,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:45:04,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:45:04,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:45:04,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:45:04,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (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 19:45:04,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:45:04,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:45:04,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:45:04,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-27 19:45:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-10-27 19:45:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 19:45:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:45:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:45:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:45:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:45:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:45:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:45:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-27 19:45:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:45:04,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:45:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:45:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-10-27 19:45:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 19:45:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:45:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:45:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:45:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:45:04,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:45:04,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:45:04,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:45:04,982 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 19:45:04,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:04 BoogieIcfgContainer [2020-10-27 19:45:04,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:45:04,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:45:04,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:45:04,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:45:04,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:45:03" (1/3) ... [2020-10-27 19:45:04,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb562cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:04, skipping insertion in model container [2020-10-27 19:45:04,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:04" (2/3) ... [2020-10-27 19:45:04,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb562cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:04, skipping insertion in model container [2020-10-27 19:45:04,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:04" (3/3) ... [2020-10-27 19:45:04,994 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-10-27 19:45:05,007 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:45:05,012 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:45:05,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:45:05,054 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:45:05,054 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:45:05,054 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:45:05,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:45:05,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:45:05,055 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:45:05,055 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:45:05,055 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:45:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-27 19:45:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 19:45:05,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:05,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:45:05,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:05,092 INFO L82 PathProgramCache]: Analyzing trace with hash 151569813, now seen corresponding path program 1 times [2020-10-27 19:45:05,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:05,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154592916] [2020-10-27 19:45:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:05,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:05,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:05,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 19:45:05,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-27 19:45:05,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 19:45:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 19:45:05,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:05,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:05,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:05,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:05,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:45:05,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:05,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:05,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 19:45:05,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:05,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 19:45:05,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 19:45:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:05,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:45:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:06,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:06,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:45:06,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 19:45:06,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:45:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:06,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:45:06,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154592916] [2020-10-27 19:45:06,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:06,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:45:06,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591848847] [2020-10-27 19:45:06,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:45:06,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:06,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:45:06,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:45:06,072 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 5 states. [2020-10-27 19:45:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:06,309 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-10-27 19:45:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:45:06,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-27 19:45:06,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:06,320 INFO L225 Difference]: With dead ends: 84 [2020-10-27 19:45:06,320 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 19:45:06,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 19:45:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-27 19:45:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 19:45:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-27 19:45:06,377 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 23 [2020-10-27 19:45:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:06,377 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-27 19:45:06,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:45:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-27 19:45:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 19:45:06,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:06,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:45:06,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:45:06,381 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:06,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:06,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1776539675, now seen corresponding path program 1 times [2020-10-27 19:45:06,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:06,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874171019] [2020-10-27 19:45:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:06,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:06,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 19:45:06,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:06,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 19:45:06,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:45:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:06,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:06,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:06,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:06,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:45:06,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:06,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:06,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:06,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:06,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 19:45:06,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:06,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 19:45:06,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 19:45:06,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:06,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:06,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:06,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:06,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:45:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:45:06,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:45:06,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:45:06,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874171019] [2020-10-27 19:45:06,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:06,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:06,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88270272] [2020-10-27 19:45:06,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:06,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:06,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:06,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:06,789 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-27 19:45:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:06,982 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-27 19:45:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:06,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-27 19:45:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:06,986 INFO L225 Difference]: With dead ends: 61 [2020-10-27 19:45:06,986 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 19:45:06,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 19:45:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 19:45:06,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 19:45:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:45:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:45:07,002 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2020-10-27 19:45:07,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:07,002 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:45:07,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:07,002 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:45:07,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 19:45:07,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:07,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:45:07,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:45:07,004 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:07,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1801739378, now seen corresponding path program 1 times [2020-10-27 19:45:07,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:07,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923467749] [2020-10-27 19:45:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 19:45:07,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 19:45:07,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 19:45:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:07,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:07,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:45:07,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 19:45:07,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:07,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 19:45:07,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 19:45:07,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:07,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:45:07,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 19:45:07,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:45:07,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:45:07,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923467749] [2020-10-27 19:45:07,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:07,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:07,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609000033] [2020-10-27 19:45:07,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:07,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:07,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:07,299 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 19:45:07,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:07,541 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 19:45:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:07,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-27 19:45:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:07,543 INFO L225 Difference]: With dead ends: 65 [2020-10-27 19:45:07,543 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 19:45:07,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 19:45:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 19:45:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-27 19:45:07,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:45:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:45:07,554 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 25 [2020-10-27 19:45:07,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:07,555 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:45:07,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:45:07,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:45:07,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:07,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:45:07,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:45:07,557 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:07,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:07,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1575571201, now seen corresponding path program 1 times [2020-10-27 19:45:07,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:07,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271137140] [2020-10-27 19:45:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 19:45:07,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 19:45:07,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 19:45:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:07,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:07,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:07,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:45:07,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:07,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:07,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:45:07,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:07,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 19:45:07,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:45:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:07,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:45:07,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:07,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:45:07,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:45:07,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:45:07,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271137140] [2020-10-27 19:45:07,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:07,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:07,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269820835] [2020-10-27 19:45:07,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:07,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:07,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:07,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:07,852 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 19:45:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:08,035 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 19:45:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:08,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 19:45:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:08,037 INFO L225 Difference]: With dead ends: 69 [2020-10-27 19:45:08,037 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 19:45:08,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:08,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 19:45:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-10-27 19:45:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:45:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:45:08,047 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 26 [2020-10-27 19:45:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:08,048 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:45:08,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:45:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 19:45:08,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:08,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:45:08,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:45:08,050 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:08,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash -624344114, now seen corresponding path program 1 times [2020-10-27 19:45:08,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:08,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686076439] [2020-10-27 19:45:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 19:45:08,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 19:45:08,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 19:45:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:08,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:08,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:45:08,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 19:45:08,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 19:45:08,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:45:08,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:08,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 19:45:08,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 19:45:08,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 19:45:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:45:08,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686076439] [2020-10-27 19:45:08,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:08,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:08,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353185513] [2020-10-27 19:45:08,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:08,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:08,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:08,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:08,369 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 19:45:08,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:08,534 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 19:45:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:08,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-27 19:45:08,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:08,536 INFO L225 Difference]: With dead ends: 65 [2020-10-27 19:45:08,536 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 19:45:08,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 19:45:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-27 19:45:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:45:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:45:08,545 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2020-10-27 19:45:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:08,546 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:45:08,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:45:08,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 19:45:08,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:08,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:45:08,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:45:08,548 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:08,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:08,548 INFO L82 PathProgramCache]: Analyzing trace with hash -495261395, now seen corresponding path program 1 times [2020-10-27 19:45:08,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:08,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381115216] [2020-10-27 19:45:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:45:08,565 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:45:08,565 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:45:08,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:45:08,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:45:08 BoogieIcfgContainer [2020-10-27 19:45:08,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:45:08,598 INFO L168 Benchmark]: Toolchain (without parser) took 4727.76 ms. Allocated memory was 151.0 MB in the beginning and 199.2 MB in the end (delta: 48.2 MB). Free memory was 126.4 MB in the beginning and 129.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 45.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:08,600 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:08,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.97 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:08,604 INFO L168 Benchmark]: Boogie Preprocessor took 96.41 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:08,609 INFO L168 Benchmark]: RCFGBuilder took 623.24 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 130.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:08,610 INFO L168 Benchmark]: TraceAbstraction took 3607.94 ms. Allocated memory was 151.0 MB in the beginning and 199.2 MB in the end (delta: 48.2 MB). Free memory was 130.1 MB in the beginning and 129.9 MB in the end (delta: 158.3 kB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:08,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 384.97 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 96.41 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 623.24 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 130.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3607.94 ms. Allocated memory was 151.0 MB in the beginning and 199.2 MB in the end (delta: 48.2 MB). Free memory was 130.1 MB in the beginning and 129.9 MB in the end (delta: 158.3 kB). Peak memory consumption was 47.9 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 71, overapproximation of someUnaryFLOAToperation at line 66. Possible FailurePath: [L66] float x = -0.0f; [L67] float y = 0.0f; [L68] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] RET, EXPR __fpclassify_float(x) [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] RET, EXPR fmin_float(x, y) [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 236 SDtfs, 50 SDslu, 525 SDs, 0 SdLazy, 347 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 10434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...