/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 --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 interpolation-heuristic=FIRST --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/double_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:46,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:46,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:46,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:46,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:46,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:46,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:46,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:46,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:46,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:46,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:46,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:46,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:46,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:46,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:46,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:46,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:46,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:46,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:46,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:46,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:46,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:46,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:46,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:46,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:46,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:46,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:46,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:46,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:46,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:46,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:46,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:46,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:46,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:46,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:46,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:46,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:46,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:46,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:46,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:46,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:46,494 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 [2020-09-21 11:18:46,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:46,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:46,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:46,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:46,542 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:46,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:46,542 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:46,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:46,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:46,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:46,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:46,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:46,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:46,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:46,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:46,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:46,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:46,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:46,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:46,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:46,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:46,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:46,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:46,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:46,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:46,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:46,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:46,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:46,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:46,547 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:47,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:47,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:47,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:47,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:47,078 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:47,079 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-09-21 11:18:47,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d9174fc/033b812e71e146a88ed51dae5bdb850e/FLAG45cf61325 [2020-09-21 11:18:47,730 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:47,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-09-21 11:18:47,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d9174fc/033b812e71e146a88ed51dae5bdb850e/FLAG45cf61325 [2020-09-21 11:18:48,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d9174fc/033b812e71e146a88ed51dae5bdb850e [2020-09-21 11:18:48,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:48,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:48,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:48,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:48,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:48,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ac829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48, skipping insertion in model container [2020-09-21 11:18:48,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:48,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:48,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:48,416 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:48,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:48,503 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:48,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48 WrapperNode [2020-09-21 11:18:48,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:48,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:48,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:48,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:48,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (1/1) ... [2020-09-21 11:18:48,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:48,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:48,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:48,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:48,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (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 [2020-09-21 11:18:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:48,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 11:18:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-21 11:18:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-21 11:18:48,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 11:18:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 11:18:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-21 11:18:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-21 11:18:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:49,130 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:49,131 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 11:18:49,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:49 BoogieIcfgContainer [2020-09-21 11:18:49,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:49,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:49,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:49,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:49,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:48" (1/3) ... [2020-09-21 11:18:49,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d37eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:49, skipping insertion in model container [2020-09-21 11:18:49,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:48" (2/3) ... [2020-09-21 11:18:49,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d37eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:49, skipping insertion in model container [2020-09-21 11:18:49,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:49" (3/3) ... [2020-09-21 11:18:49,145 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-09-21 11:18:49,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:49,166 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:49,186 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:49,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:49,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:49,213 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:49,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:49,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:49,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:49,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:49,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:49,237 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-21 11:18:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:18:49,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:49,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:18:49,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:49,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1251720270, now seen corresponding path program 1 times [2020-09-21 11:18:49,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:49,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469760049] [2020-09-21 11:18:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,406 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,406 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,406 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 11:18:49,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:18:49,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:18:49,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:49,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,497 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,497 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,497 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,498 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:49,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:49,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:49,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,535 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,536 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,536 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:18:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:18:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,558 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:18:49,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:49,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:18:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:49,580 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:49,580 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:49,580 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:49,581 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:49,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:49,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:49,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:49,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:49,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:49,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469760049] [2020-09-21 11:18:49,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:49,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:49,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214063053] [2020-09-21 11:18:49,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:49,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:49,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:49,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:49,647 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-09-21 11:18:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:49,847 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-09-21 11:18:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:18:49,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-09-21 11:18:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:49,862 INFO L225 Difference]: With dead ends: 71 [2020-09-21 11:18:49,862 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 11:18:49,867 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 [2020-09-21 11:18:49,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 11:18:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-21 11:18:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 11:18:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-21 11:18:49,927 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-09-21 11:18:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:49,927 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-21 11:18:49,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-21 11:18:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:18:49,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:49,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:18:49,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:49,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:49,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1491407075, now seen corresponding path program 1 times [2020-09-21 11:18:49,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:49,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761869795] [2020-09-21 11:18:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,024 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,025 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,026 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:18:50,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 11:18:50,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:18:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:50,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,125 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,126 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:50,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:18:50,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:18:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,226 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,226 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:18:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:18:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,323 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,324 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,324 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,324 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:18:50,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:18:50,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:18:50,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 11:18:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,379 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,379 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,379 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:50,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:50,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:50,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761869795] [2020-09-21 11:18:50,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:50,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:50,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502406872] [2020-09-21 11:18:50,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:50,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:50,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:50,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:50,391 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2020-09-21 11:18:50,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:50,636 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-09-21 11:18:50,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:50,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-21 11:18:50,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:50,641 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:18:50,641 INFO L226 Difference]: Without dead ends: 40 [2020-09-21 11:18:50,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:18:50,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-21 11:18:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-21 11:18:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:18:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 11:18:50,655 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-09-21 11:18:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:50,656 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 11:18:50,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 11:18:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:18:50,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:50,658 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] [2020-09-21 11:18:50,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:50,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:50,659 INFO L82 PathProgramCache]: Analyzing trace with hash -836791339, now seen corresponding path program 1 times [2020-09-21 11:18:50,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:50,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804641618] [2020-09-21 11:18:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,689 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,689 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,689 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:18:50,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:18:50,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 11:18:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:50,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,738 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,739 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,739 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,739 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:50,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:50,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:50,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:50,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,784 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,784 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,784 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,785 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:18:50,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:18:50,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:18:50,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:50,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,823 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,824 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,826 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:18:50,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:18:50,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:18:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:50,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:18:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:50,857 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:50,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:50,858 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:50,858 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:50,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:50,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:50,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:50,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:50,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:50,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804641618] [2020-09-21 11:18:50,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:50,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:50,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892345620] [2020-09-21 11:18:50,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:50,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:50,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:50,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:50,872 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-21 11:18:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:51,109 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 11:18:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:51,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 11:18:51,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:51,111 INFO L225 Difference]: With dead ends: 55 [2020-09-21 11:18:51,111 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:18:51,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:18:51,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:18:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 11:18:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:18:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 11:18:51,122 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 28 [2020-09-21 11:18:51,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:51,122 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 11:18:51,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 11:18:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:18:51,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:51,124 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] [2020-09-21 11:18:51,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:18:51,125 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:51,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1738741799, now seen corresponding path program 1 times [2020-09-21 11:18:51,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:51,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269121825] [2020-09-21 11:18:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,148 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,148 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 11:18:51,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:18:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:18:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,190 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,190 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,191 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,191 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:51,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:51,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,250 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:18:51,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:51,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:18:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,305 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,306 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,306 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,306 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:18:51,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:18:51,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:18:51,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 11:18:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,334 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,334 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,335 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:51,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:51,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:51,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269121825] [2020-09-21 11:18:51,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:51,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:51,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243539312] [2020-09-21 11:18:51,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:51,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:51,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:51,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:51,347 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-21 11:18:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:51,625 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 11:18:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:51,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-21 11:18:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:51,627 INFO L225 Difference]: With dead ends: 55 [2020-09-21 11:18:51,627 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:18:51,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:18:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:18:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 11:18:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:18:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 11:18:51,646 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 29 [2020-09-21 11:18:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:51,646 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 11:18:51,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 11:18:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:18:51,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:51,654 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] [2020-09-21 11:18:51,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:18:51,655 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:51,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1711130393, now seen corresponding path program 1 times [2020-09-21 11:18:51,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:51,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527468595] [2020-09-21 11:18:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,690 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,690 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,691 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:18:51,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:18:51,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 11:18:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,723 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,723 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:51,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,765 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,765 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,765 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,765 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:18:51,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:51,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:18:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:51,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,801 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,801 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,801 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,801 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:18:51,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:51,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:18:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:18:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,823 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,823 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,824 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,824 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:18:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:51,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527468595] [2020-09-21 11:18:51,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:51,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:51,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623888738] [2020-09-21 11:18:51,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:51,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:51,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:51,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:51,831 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-21 11:18:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:52,045 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 11:18:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:52,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-21 11:18:52,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:52,047 INFO L225 Difference]: With dead ends: 55 [2020-09-21 11:18:52,047 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:18:52,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:18:52,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:18:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 11:18:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:18:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-21 11:18:52,056 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-09-21 11:18:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:52,056 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-21 11:18:52,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-21 11:18:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:18:52,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:52,058 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] [2020-09-21 11:18:52,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:18:52,058 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:52,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1076285094, now seen corresponding path program 1 times [2020-09-21 11:18:52,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:52,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027834357] [2020-09-21 11:18:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:52,084 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:52,084 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:52,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:18:52,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:52 BoogieIcfgContainer [2020-09-21 11:18:52,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:52,116 INFO L168 Benchmark]: Toolchain (without parser) took 4033.03 ms. Allocated memory was 139.5 MB in the beginning and 247.5 MB in the end (delta: 108.0 MB). Free memory was 103.2 MB in the beginning and 152.3 MB in the end (delta: -49.1 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:52,118 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:18:52,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.39 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 91.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:52,120 INFO L168 Benchmark]: Boogie Preprocessor took 128.26 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 179.0 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:52,120 INFO L168 Benchmark]: RCFGBuilder took 503.25 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 159.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:52,121 INFO L168 Benchmark]: TraceAbstraction took 2975.40 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 159.9 MB in the beginning and 152.3 MB in the end (delta: 7.6 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:52,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 411.39 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 91.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.26 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.7 MB in the beginning and 179.0 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.25 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 159.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2975.40 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 159.9 MB in the beginning and 152.3 MB in the end (delta: 7.6 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) [L45] CALL, EXPR __fpclassify_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] RET, EXPR __fpclassify_double(x) [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L63] RET, EXPR fmin_double(x, y) [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) [L16] return x != x; [L65] RET, EXPR isnan_double(res) [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 190 SDtfs, 174 SDslu, 81 SDs, 0 SdLazy, 520 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 8990 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...