/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=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_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:11:17,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:11:17,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:11:17,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:11:17,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:11:17,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:11:17,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:11:17,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:11:17,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:11:17,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:11:17,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:11:17,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:11:17,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:11:17,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:11:17,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:11:17,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:11:17,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:11:17,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:11:17,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:11:17,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:11:17,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:11:17,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:11:17,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:11:17,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:11:17,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:11:17,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:11:17,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:11:17,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:11:17,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:11:17,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:11:17,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:11:17,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:11:17,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:11:17,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:11:17,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:11:17,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:11:17,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:11:17,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:11:17,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:11:17,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:11:17,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:11:17,404 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 18:11:17,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:11:17,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:11:17,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:11:17,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:11:17,434 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:11:17,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:11:17,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:11:17,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:11:17,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:11:17,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:11:17,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:11:17,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:11:17,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:11:17,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:11:17,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:11:17,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:11:17,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:11:17,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:11:17,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:11:17,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:11:17,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:11:17,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:11:17,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:11:17,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:11:17,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:11:17,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:11:17,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:11:17,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:11:17,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:11:17,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:11:17,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:11:17,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:11:17,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:11:17,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:11:17,966 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:11:17,968 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-24 18:11:18,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e85bfd5f/b6a0e4c8f5574683834929fd5ecc7c0b/FLAG461f2766e [2020-09-24 18:11:18,624 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:11:18,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-24 18:11:18,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e85bfd5f/b6a0e4c8f5574683834929fd5ecc7c0b/FLAG461f2766e [2020-09-24 18:11:18,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e85bfd5f/b6a0e4c8f5574683834929fd5ecc7c0b [2020-09-24 18:11:18,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:11:18,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:11:18,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:18,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:11:18,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:11:18,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:18" (1/1) ... [2020-09-24 18:11:18,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53afdaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:18, skipping insertion in model container [2020-09-24 18:11:19,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:11:18" (1/1) ... [2020-09-24 18:11:19,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:11:19,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:11:19,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:19,358 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:11:19,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:11:19,414 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:11:19,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19 WrapperNode [2020-09-24 18:11:19,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:11:19,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:11:19,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:11:19,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:11:19,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (1/1) ... [2020-09-24 18:11:19,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (1/1) ... [2020-09-24 18:11:19,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (1/1) ... [2020-09-24 18:11:19,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (1/1) ... [2020-09-24 18:11:19,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (1/1) ... [2020-09-24 18:11:19,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (1/1) ... [2020-09-24 18:11:19,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (1/1) ... [2020-09-24 18:11:19,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:11:19,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:11:19,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:11:19,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:11:19,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (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 18:11:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:11:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:11:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-24 18:11:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-24 18:11:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 18:11:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:11:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:11:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-24 18:11:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:11:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 18:11:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:11:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:11:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-24 18:11:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 18:11:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:11:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:11:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:11:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 18:11:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:11:19,993 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:11:19,993 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 18:11:20,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:20 BoogieIcfgContainer [2020-09-24 18:11:20,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:11:20,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:11:20,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:11:20,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:11:20,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:11:18" (1/3) ... [2020-09-24 18:11:20,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4a2ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:20, skipping insertion in model container [2020-09-24 18:11:20,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:11:19" (2/3) ... [2020-09-24 18:11:20,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4a2ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:11:20, skipping insertion in model container [2020-09-24 18:11:20,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:11:20" (3/3) ... [2020-09-24 18:11:20,010 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-09-24 18:11:20,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:11:20,032 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:11:20,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:11:20,104 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:11:20,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:11:20,105 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:11:20,105 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:11:20,105 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:11:20,105 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:11:20,105 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:11:20,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:11:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-24 18:11:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 18:11:20,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:20,139 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 18:11:20,139 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:20,147 INFO L82 PathProgramCache]: Analyzing trace with hash 337584138, now seen corresponding path program 1 times [2020-09-24 18:11:20,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:20,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819729784] [2020-09-24 18:11:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:20,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:20,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 18:11:20,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-09-24 18:11:20,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 18:11:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:20,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:11:20,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:20,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:20,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:11:20,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:11:20,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:20,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:11:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:20,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:20,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:11:20,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:11:20,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:11:20,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:11:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:11:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:20,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:11:20,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:11:20,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 18:11:20,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:20,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:11:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:20,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:20,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:20,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:11:20,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:11:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:20,939 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 18:11:20,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819729784] [2020-09-24 18:11:20,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:20,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:11:20,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433059922] [2020-09-24 18:11:20,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:11:20,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:20,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:11:20,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:11:20,972 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-24 18:11:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:21,285 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-09-24 18:11:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:11:21,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-24 18:11:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:21,308 INFO L225 Difference]: With dead ends: 132 [2020-09-24 18:11:21,308 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 18:11:21,316 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 18:11:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 18:11:21,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 18:11:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 18:11:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-09-24 18:11:21,389 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2020-09-24 18:11:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:21,390 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-09-24 18:11:21,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:11:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-09-24 18:11:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 18:11:21,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:21,394 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 18:11:21,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:11:21,395 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:21,408 INFO L82 PathProgramCache]: Analyzing trace with hash -356550436, now seen corresponding path program 1 times [2020-09-24 18:11:21,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:21,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454347855] [2020-09-24 18:11:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:21,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:21,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 18:11:21,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 18:11:21,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 18:11:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:21,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:21,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:11:21,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:11:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:21,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:11:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:21,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:21,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:11:21,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 18:11:21,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:11:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:11:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:21,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:11:21,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 18:11:21,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:21,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:21,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:21,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:11:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 18:11:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:22,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:22,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:22,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:22,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:11:22,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:22,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:11:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:22,040 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 18:11:22,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454347855] [2020-09-24 18:11:22,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:22,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:22,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938590392] [2020-09-24 18:11:22,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:22,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:22,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:22,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:22,048 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-09-24 18:11:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:22,311 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 18:11:22,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:22,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-24 18:11:22,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:22,321 INFO L225 Difference]: With dead ends: 87 [2020-09-24 18:11:22,321 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 18:11:22,323 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 18:11:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 18:11:22,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-24 18:11:22,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 18:11:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 18:11:22,357 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2020-09-24 18:11:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:22,357 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 18:11:22,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 18:11:22,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 18:11:22,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:22,362 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 18:11:22,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:11:22,363 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:22,364 INFO L82 PathProgramCache]: Analyzing trace with hash 9988108, now seen corresponding path program 1 times [2020-09-24 18:11:22,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:22,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417456678] [2020-09-24 18:11:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:22,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:22,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 18:11:22,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:22,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 18:11:22,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:22,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:11:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:22,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:11:22,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:22,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:22,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:11:22,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:22,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:11:22,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:22,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:11:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:22,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:22,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:11:22,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:11:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:11:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:22,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:11:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:22,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:11:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 18:11:22,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:11:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 18:11:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:22,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:11:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:11:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:22,884 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 18:11:22,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417456678] [2020-09-24 18:11:22,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:22,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:22,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502873127] [2020-09-24 18:11:22,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:22,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:22,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:22,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:22,889 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 18:11:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:23,111 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-24 18:11:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:23,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-09-24 18:11:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:23,113 INFO L225 Difference]: With dead ends: 91 [2020-09-24 18:11:23,114 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 18:11:23,114 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 18:11:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 18:11:23,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-24 18:11:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 18:11:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 18:11:23,124 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 47 [2020-09-24 18:11:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:23,125 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 18:11:23,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 18:11:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 18:11:23,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:23,127 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 18:11:23,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:11:23,127 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:23,128 INFO L82 PathProgramCache]: Analyzing trace with hash 738627255, now seen corresponding path program 1 times [2020-09-24 18:11:23,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:23,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278391396] [2020-09-24 18:11:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:23,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:23,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 18:11:23,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:11:23,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:11:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:23,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:23,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:23,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:11:23,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:23,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:23,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:11:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:23,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:23,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:11:23,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:23,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 18:11:23,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:11:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:23,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:11:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:23,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:23,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:11:23,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:23,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 18:11:23,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:11:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 18:11:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:23,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:23,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:23,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:23,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:23,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:11:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:11:23,513 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 18:11:23,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278391396] [2020-09-24 18:11:23,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:23,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:23,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693067347] [2020-09-24 18:11:23,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:23,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:23,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:23,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:23,519 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 18:11:23,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:23,733 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-24 18:11:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:23,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-09-24 18:11:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:23,735 INFO L225 Difference]: With dead ends: 95 [2020-09-24 18:11:23,735 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 18:11:23,736 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 18:11:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 18:11:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-09-24 18:11:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 18:11:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 18:11:23,754 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 48 [2020-09-24 18:11:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:23,756 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 18:11:23,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 18:11:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 18:11:23,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:23,758 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 18:11:23,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:11:23,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:23,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash -192516793, now seen corresponding path program 1 times [2020-09-24 18:11:23,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:23,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97930151] [2020-09-24 18:11:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:23,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:23,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:23,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 18:11:23,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:23,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 18:11:23,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:11:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:23,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:11:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:23,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:23,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:23,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:11:23,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:11:23,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:23,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:23,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:11:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:23,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:24,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:11:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 18:11:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:11:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:11:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:11:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:24,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:24,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:11:24,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 18:11:24,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:11:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:11:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:11:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:11:24,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 18:11:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:11:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:11:24,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:11:24,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:11:24,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:11:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:11:24,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:11:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:11:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:11:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:11:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:11:24,206 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 18:11:24,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97930151] [2020-09-24 18:11:24,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:11:24,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:11:24,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402482013] [2020-09-24 18:11:24,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:11:24,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:11:24,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:11:24,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:11:24,209 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 18:11:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:11:24,394 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-24 18:11:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:11:24,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 18:11:24,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:11:24,399 INFO L225 Difference]: With dead ends: 91 [2020-09-24 18:11:24,399 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 18:11:24,400 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 18:11:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 18:11:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-24 18:11:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 18:11:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 18:11:24,415 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-09-24 18:11:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:11:24,415 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 18:11:24,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:11:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 18:11:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 18:11:24,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:11:24,419 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 18:11:24,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:11:24,420 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:11:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:11:24,420 INFO L82 PathProgramCache]: Analyzing trace with hash -587463417, now seen corresponding path program 1 times [2020-09-24 18:11:24,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:11:24,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228501962] [2020-09-24 18:11:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:11:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:11:24,444 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:11:24,445 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:11:24,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:11:24,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:11:24 BoogieIcfgContainer [2020-09-24 18:11:24,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:11:24,482 INFO L168 Benchmark]: Toolchain (without parser) took 5498.06 ms. Allocated memory was 140.0 MB in the beginning and 244.8 MB in the end (delta: 104.9 MB). Free memory was 103.1 MB in the beginning and 164.9 MB in the end (delta: -61.8 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:24,484 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:11:24,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.01 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:24,496 INFO L168 Benchmark]: Boogie Preprocessor took 141.41 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:24,498 INFO L168 Benchmark]: RCFGBuilder took 442.79 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 159.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:24,499 INFO L168 Benchmark]: TraceAbstraction took 4475.97 ms. Allocated memory was 202.4 MB in the beginning and 244.8 MB in the end (delta: 42.5 MB). Free memory was 158.4 MB in the beginning and 164.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:11:24,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 428.01 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.41 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.79 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 159.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4475.97 ms. Allocated memory was 202.4 MB in the beginning and 244.8 MB in the end (delta: 42.5 MB). Free memory was 158.4 MB in the beginning and 164.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 55. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) [L35] CALL, EXPR __fpclassify_float(x) [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] RET, EXPR __fpclassify_float(x) [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] RET, EXPR fmin_float(x, y) [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) [L44] return x != x; [L58] RET, EXPR isnan_float(res) [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, 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, 0.7s 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, 2.5s 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...