/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/recursive-simple/id_b3_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:21:35,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:21:35,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:21:35,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:21:35,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:21:35,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:21:35,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:21:35,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:21:35,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:21:35,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:21:35,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:21:35,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:21:35,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:21:35,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:21:35,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:21:35,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:21:35,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:21:35,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:21:35,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:21:35,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:21:35,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:21:35,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:21:35,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:21:35,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:21:35,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:21:35,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:21:35,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:21:35,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:21:35,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:21:35,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:21:35,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:21:35,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:21:35,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:21:35,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:21:35,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:21:35,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:21:35,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:21:35,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:21:35,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:21:35,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:21:35,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:21:35,284 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 11:21:35,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:21:35,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:21:35,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:21:35,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:21:35,342 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:21:35,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:21:35,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:21:35,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:21:35,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:21:35,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:21:35,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:21:35,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:21:35,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:21:35,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:21:35,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:21:35,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:21:35,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:21:35,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:21:35,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:21:35,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:21:35,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:21:35,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:21:35,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:21:35,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:21:35,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:21:35,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:21:35,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:21:35,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:21:35,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:21:35,349 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 11:21:35,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:21:35,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:21:35,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:21:35,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:21:35,851 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:21:35,852 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-09-21 11:21:35,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98a679e71/4f4338b0497748479a3b6ee1d7646d53/FLAGb7d7fa14f [2020-09-21 11:21:36,402 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:21:36,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-09-21 11:21:36,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98a679e71/4f4338b0497748479a3b6ee1d7646d53/FLAGb7d7fa14f [2020-09-21 11:21:36,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98a679e71/4f4338b0497748479a3b6ee1d7646d53 [2020-09-21 11:21:36,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:21:36,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:21:36,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:36,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:21:36,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:21:36,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:36" (1/1) ... [2020-09-21 11:21:36,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:36, skipping insertion in model container [2020-09-21 11:21:36,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:36" (1/1) ... [2020-09-21 11:21:36,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:21:36,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:21:37,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:37,066 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:21:37,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:37,105 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:21:37,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37 WrapperNode [2020-09-21 11:21:37,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:37,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:21:37,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:21:37,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:21:37,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (1/1) ... [2020-09-21 11:21:37,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (1/1) ... [2020-09-21 11:21:37,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (1/1) ... [2020-09-21 11:21:37,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (1/1) ... [2020-09-21 11:21:37,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (1/1) ... [2020-09-21 11:21:37,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (1/1) ... [2020-09-21 11:21:37,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (1/1) ... [2020-09-21 11:21:37,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:21:37,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:21:37,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:21:37,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:21:37,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (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 11:21:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:21:37,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:21:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-21 11:21:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:21:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:21:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:21:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-21 11:21:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:21:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:21:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:21:37,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:21:37,509 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:21:37,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:37 BoogieIcfgContainer [2020-09-21 11:21:37,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:21:37,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:21:37,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:21:37,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:21:37,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:21:36" (1/3) ... [2020-09-21 11:21:37,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d26f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:37, skipping insertion in model container [2020-09-21 11:21:37,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:37" (2/3) ... [2020-09-21 11:21:37,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d26f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:37, skipping insertion in model container [2020-09-21 11:21:37,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:37" (3/3) ... [2020-09-21 11:21:37,524 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2020-09-21 11:21:37,535 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:21:37,546 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:21:37,568 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:21:37,601 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:21:37,601 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:21:37,601 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:21:37,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:21:37,602 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:21:37,602 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:21:37,602 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:21:37,602 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:21:37,622 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-21 11:21:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:21:37,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:37,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:37,632 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2020-09-21 11:21:37,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:37,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314513772] [2020-09-21 11:21:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:37,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:21:37,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -5 [2020-09-21 11:21:37,814 FATAL L256 erpolLogProxyWrapper]: Difference in width: 5 [2020-09-21 11:21:37,815 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:37,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:21:37,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 11:21:37,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:21:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:21:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:37,888 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:37,889 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:37,889 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:37,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:37,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:37,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:37,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:37,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:37,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:37,923 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:37,924 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:37,924 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:37,924 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:37,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:37,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:37,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:21:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:21:37,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:37,971 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 11:21:37,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314513772] [2020-09-21 11:21:37,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:37,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:37,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962313171] [2020-09-21 11:21:37,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:37,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:38,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:38,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:38,011 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-09-21 11:21:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:38,086 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-09-21 11:21:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:38,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:21:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:38,103 INFO L225 Difference]: With dead ends: 33 [2020-09-21 11:21:38,103 INFO L226 Difference]: Without dead ends: 19 [2020-09-21 11:21:38,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-21 11:21:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-21 11:21:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-21 11:21:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-09-21 11:21:38,163 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-09-21 11:21:38,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:38,163 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-09-21 11:21:38,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-09-21 11:21:38,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:21:38,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:38,166 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:38,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:21:38,167 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:38,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2020-09-21 11:21:38,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:38,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146342220] [2020-09-21 11:21:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:38,226 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:38,226 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:38,227 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:38,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:38,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:21:38,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 11:21:38,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:21:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:21:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:38,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:38,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:38,288 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:38,288 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:38,289 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:38,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:38,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:38,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:38,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:38,312 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:38,313 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:38,313 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:38,313 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:38,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:21:38,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:21:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:21:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:21:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:38,342 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:38,343 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:38,343 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:38,343 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:38,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:38,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:38,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:38,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:21:38,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146342220] [2020-09-21 11:21:38,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:38,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:38,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566325667] [2020-09-21 11:21:38,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:38,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:38,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:38,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:38,373 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-09-21 11:21:38,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:38,403 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-09-21 11:21:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:38,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 11:21:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:38,405 INFO L225 Difference]: With dead ends: 25 [2020-09-21 11:21:38,406 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 11:21:38,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 11:21:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-09-21 11:21:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-21 11:21:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-09-21 11:21:38,414 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 20 [2020-09-21 11:21:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:38,415 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-09-21 11:21:38,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-09-21 11:21:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:21:38,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:38,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:38,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:21:38,417 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2020-09-21 11:21:38,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:38,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535796303] [2020-09-21 11:21:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:38,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-21 11:21:38,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -7 [2020-09-21 11:21:38,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 7 [2020-09-21 11:21:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:38,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:21:38,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 11:21:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:21:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:21:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:38,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:38,515 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:38,516 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:38,516 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:38,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:38,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:38,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:38,577 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-21 11:21:38,577 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:38,578 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:38,578 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:38,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:21:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:38,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 11:21:38,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:21:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:21:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:38,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:21:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:38,630 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:38,630 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:38,630 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:38,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:38,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:38,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:38,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:38,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:21:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:21:38,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535796303] [2020-09-21 11:21:38,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:38,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:38,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024263425] [2020-09-21 11:21:38,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:38,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:38,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:38,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:38,660 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-09-21 11:21:38,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:38,682 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-09-21 11:21:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:38,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 11:21:38,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:38,683 INFO L225 Difference]: With dead ends: 19 [2020-09-21 11:21:38,684 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:21:38,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:21:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:21:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:21:38,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:21:38,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-09-21 11:21:38,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:38,686 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:21:38,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:38,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:21:38,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:21:38,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:21:38,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:21:38,721 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:21:38,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:21:38,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:21:38,721 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:21:38,722 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:21:38,722 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:21:38,722 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-21 11:21:38,722 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-21 11:21:38,722 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-21 11:21:38,722 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-21 11:21:38,722 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-21 11:21:38,723 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-21 11:21:38,723 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-21 11:21:38,723 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-21 11:21:38,723 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-21 11:21:38,723 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-21 11:21:38,724 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-21 11:21:38,724 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-21 11:21:38,724 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-21 11:21:38,724 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 11:21:38,724 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-21 11:21:38,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:21:38 BoogieIcfgContainer [2020-09-21 11:21:38,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:21:38,736 INFO L168 Benchmark]: Toolchain (without parser) took 1956.03 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 101.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 64.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:38,737 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:21:38,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.57 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:38,739 INFO L168 Benchmark]: Boogie Preprocessor took 35.96 ms. Allocated memory is still 139.5 MB. Free memory was 92.9 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:38,740 INFO L168 Benchmark]: RCFGBuilder took 370.85 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 170.0 MB in the end (delta: -78.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:38,741 INFO L168 Benchmark]: TraceAbstraction took 1217.24 ms. Allocated memory is still 202.4 MB. Free memory was 170.0 MB in the beginning and 101.7 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:38,746 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.57 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.96 ms. Allocated memory is still 139.5 MB. Free memory was 92.9 MB in the beginning and 91.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.85 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 170.0 MB in the end (delta: -78.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1217.24 ms. Allocated memory is still 202.4 MB. Free memory was 170.0 MB in the beginning and 101.7 MB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 2 SDslu, 157 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 8/8 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 proved your program to be correct! Received shutdown request...