/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:17:44,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:44,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:44,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:44,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:44,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:44,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:44,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:44,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:44,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:44,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:44,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:44,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:44,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:44,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:44,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:44,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:44,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:44,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:44,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:44,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:44,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:44,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:44,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:44,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:44,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:44,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:44,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:44,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:44,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:44,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:44,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:44,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:44,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:44,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:44,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:44,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:44,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:44,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:44,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:44,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:44,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:17:44,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:44,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:44,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:44,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:44,262 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:44,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:44,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:44,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:44,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:44,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:44,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:44,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:44,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:44,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:44,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:44,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:44,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:44,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:44,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:44,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:44,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:44,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:44,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:44,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:44,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:44,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:44,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:44,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:44,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:44,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:17:44,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:44,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:44,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:44,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:44,792 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:44,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-09-24 19:17:44,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaad77a78/9f0c17cd28264e3ab804036cf131013d/FLAGea6ad98e3 [2020-09-24 19:17:45,424 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:45,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-09-24 19:17:45,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaad77a78/9f0c17cd28264e3ab804036cf131013d/FLAGea6ad98e3 [2020-09-24 19:17:45,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaad77a78/9f0c17cd28264e3ab804036cf131013d [2020-09-24 19:17:45,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:45,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:45,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:45,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:45,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:45,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:45" (1/1) ... [2020-09-24 19:17:45,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b599924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:45, skipping insertion in model container [2020-09-24 19:17:45,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:45" (1/1) ... [2020-09-24 19:17:45,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:45,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:46,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:46,067 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:46,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:46,122 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:46,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46 WrapperNode [2020-09-24 19:17:46,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:46,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:46,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:46,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:46,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (1/1) ... [2020-09-24 19:17:46,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (1/1) ... [2020-09-24 19:17:46,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (1/1) ... [2020-09-24 19:17:46,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (1/1) ... [2020-09-24 19:17:46,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (1/1) ... [2020-09-24 19:17:46,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (1/1) ... [2020-09-24 19:17:46,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (1/1) ... [2020-09-24 19:17:46,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:46,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:46,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:46,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:46,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-24 19:17:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-09-24 19:17:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 19:17:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-24 19:17:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:17:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 19:17:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:17:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:17:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-09-24 19:17:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 19:17:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 19:17:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:17:46,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:46,711 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 19:17:46,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:46 BoogieIcfgContainer [2020-09-24 19:17:46,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:46,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:46,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:46,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:46,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:45" (1/3) ... [2020-09-24 19:17:46,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d5c06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:46, skipping insertion in model container [2020-09-24 19:17:46,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:46" (2/3) ... [2020-09-24 19:17:46,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d5c06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:46, skipping insertion in model container [2020-09-24 19:17:46,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:46" (3/3) ... [2020-09-24 19:17:46,728 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-09-24 19:17:46,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:46,753 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:46,791 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:46,826 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:46,826 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:46,827 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:46,827 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:46,827 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:46,827 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:46,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:46,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:46,851 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-24 19:17:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 19:17:46,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:46,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:46,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:46,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1283430724, now seen corresponding path program 1 times [2020-09-24 19:17:46,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:46,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060898332] [2020-09-24 19:17:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 19:17:47,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-24 19:17:47,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:17:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:47,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:17:47,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:47,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:17:47,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:47,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:17:47,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:17:47,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 19:17:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:47,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:47,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:17:47,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:17:47,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 19:17:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:47,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:17:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:47,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:17:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:47,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060898332] [2020-09-24 19:17:47,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:47,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:17:47,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945351132] [2020-09-24 19:17:47,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:47,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:47,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:47,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:47,667 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-24 19:17:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:47,965 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-09-24 19:17:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:17:47,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-24 19:17:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:47,988 INFO L225 Difference]: With dead ends: 132 [2020-09-24 19:17:47,989 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 19:17:47,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:17:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 19:17:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 19:17:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 19:17:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-09-24 19:17:48,080 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2020-09-24 19:17:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:48,081 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-09-24 19:17:48,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-09-24 19:17:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 19:17:48,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:48,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:48,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:48,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:48,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:48,087 INFO L82 PathProgramCache]: Analyzing trace with hash -611644563, now seen corresponding path program 1 times [2020-09-24 19:17:48,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:48,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5633431] [2020-09-24 19:17:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 19:17:48,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 19:17:48,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:48,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 19:17:48,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:48,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:48,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:17:48,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:17:48,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 19:17:48,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:48,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:17:48,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:48,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:17:48,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 19:17:48,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:48,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:17:48,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 19:17:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:48,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:17:48,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:48,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5633431] [2020-09-24 19:17:48,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:48,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:48,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354135160] [2020-09-24 19:17:48,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:48,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:48,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:48,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:48,742 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-09-24 19:17:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:49,014 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 19:17:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:49,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-24 19:17:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:49,022 INFO L225 Difference]: With dead ends: 87 [2020-09-24 19:17:49,022 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 19:17:49,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 19:17:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-24 19:17:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:17:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 19:17:49,058 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2020-09-24 19:17:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:49,059 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 19:17:49,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 19:17:49,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 19:17:49,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:49,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:49,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:49,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:49,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:49,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1640490466, now seen corresponding path program 1 times [2020-09-24 19:17:49,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:49,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958075444] [2020-09-24 19:17:49,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:49,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:49,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 19:17:49,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 19:17:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:17:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 19:17:49,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:49,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:49,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:17:49,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:49,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:49,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:17:49,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:49,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:17:49,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:17:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:49,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:49,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 19:17:49,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:17:49,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:17:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 19:17:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:49,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:49,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:17:49,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:49,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:49,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958075444] [2020-09-24 19:17:49,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:49,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:49,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247335778] [2020-09-24 19:17:49,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:49,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:49,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:49,586 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 19:17:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:49,797 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-24 19:17:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:49,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-09-24 19:17:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:49,800 INFO L225 Difference]: With dead ends: 91 [2020-09-24 19:17:49,800 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 19:17:49,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 19:17:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-24 19:17:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:17:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 19:17:49,811 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 47 [2020-09-24 19:17:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:49,811 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 19:17:49,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 19:17:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 19:17:49,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:49,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:49,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:17:49,814 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:49,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1219096216, now seen corresponding path program 1 times [2020-09-24 19:17:49,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:49,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330926091] [2020-09-24 19:17:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:49,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:49,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:17:49,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 19:17:49,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 19:17:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:49,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:49,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:49,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:49,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:17:49,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:49,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:49,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:50,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:50,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 19:17:50,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:50,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 19:17:50,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:50,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:50,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:17:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:50,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:50,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:17:50,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:17:50,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:17:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:50,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 19:17:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:50,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:50,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:50,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:50,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:17:50,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:50,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:50,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:50,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330926091] [2020-09-24 19:17:50,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:50,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:50,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429321435] [2020-09-24 19:17:50,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:50,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:50,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:50,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:50,194 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 19:17:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:50,368 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-24 19:17:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:50,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-09-24 19:17:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:50,370 INFO L225 Difference]: With dead ends: 95 [2020-09-24 19:17:50,371 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 19:17:50,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 19:17:50,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-09-24 19:17:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:17:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 19:17:50,381 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 48 [2020-09-24 19:17:50,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:50,382 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 19:17:50,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 19:17:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 19:17:50,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:50,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:50,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:17:50,384 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:50,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1210069817, now seen corresponding path program 1 times [2020-09-24 19:17:50,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:50,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946290308] [2020-09-24 19:17:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:50,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:50,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:17:50,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 19:17:50,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 19:17:50,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:50,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:50,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:50,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:50,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:50,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:17:50,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:50,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:50,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:17:50,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:50,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:17:50,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 19:17:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:50,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:50,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:50,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:17:50,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 19:17:50,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:17:50,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 19:17:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:50,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:50,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:50,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:50,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:50,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:50,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:50,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946290308] [2020-09-24 19:17:50,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:50,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:50,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108927631] [2020-09-24 19:17:50,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:50,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:50,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:50,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:50,782 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 19:17:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:50,946 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-24 19:17:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:50,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 19:17:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:50,948 INFO L225 Difference]: With dead ends: 91 [2020-09-24 19:17:50,948 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 19:17:50,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 19:17:50,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-24 19:17:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:17:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 19:17:50,957 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-09-24 19:17:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:50,958 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 19:17:50,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 19:17:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 19:17:50,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:50,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:50,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:17:50,960 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:50,960 INFO L82 PathProgramCache]: Analyzing trace with hash 815123193, now seen corresponding path program 1 times [2020-09-24 19:17:50,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:50,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790897769] [2020-09-24 19:17:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:17:50,978 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:17:50,978 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:17:50,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:17:51,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:51 BoogieIcfgContainer [2020-09-24 19:17:51,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:17:51,011 INFO L168 Benchmark]: Toolchain (without parser) took 5242.98 ms. Allocated memory was 140.5 MB in the beginning and 245.4 MB in the end (delta: 104.9 MB). Free memory was 103.8 MB in the beginning and 163.8 MB in the end (delta: -60.0 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:51,013 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 19:17:51,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.44 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 92.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:51,015 INFO L168 Benchmark]: Boogie Preprocessor took 133.56 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.4 MB in the beginning and 181.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:51,016 INFO L168 Benchmark]: RCFGBuilder took 460.95 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 160.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:51,016 INFO L168 Benchmark]: TraceAbstraction took 4286.94 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 159.9 MB in the beginning and 163.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:51,021 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 351.44 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 92.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.56 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.4 MB in the beginning and 181.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.95 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 160.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4286.94 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 159.9 MB in the beginning and 163.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 61. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) [L43] CALL, EXPR __fpclassify_float(x) [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] RET, EXPR __fpclassify_float(x) [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L62] RET, EXPR fmax_float(x, y) [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) [L54] return x != x; [L64] RET, EXPR isnan_float(res) [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 365 SDtfs, 99 SDslu, 716 SDs, 0 SdLazy, 505 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 19124 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...