/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options 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/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:56:39,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:56:39,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:56:39,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:56:39,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:56:39,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:56:39,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:56:39,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:56:39,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:56:39,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:56:39,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:56:39,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:56:39,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:56:39,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:56:39,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:56:39,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:56:39,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:56:39,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:56:39,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:56:39,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:56:39,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:56:39,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:56:39,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:56:39,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:56:39,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:56:39,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:56:39,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:56:39,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:56:39,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:56:39,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:56:39,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:56:39,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:56:39,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:56:39,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:56:39,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:56:39,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:56:39,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:56:39,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:56:39,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:56:39,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:56:39,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:56:39,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:56:39,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:56:39,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:56:39,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:56:39,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:56:39,170 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:56:39,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:56:39,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:56:39,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:56:39,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:56:39,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:56:39,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:56:39,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:56:39,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:56:39,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:56:39,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:56:39,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:56:39,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:56:39,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:56:39,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:56:39,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:56:39,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:56:39,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:56:39,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:56:39,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:56:39,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:56:39,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:56:39,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:56:39,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:56:39,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:56:39,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;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; [2020-09-24 15:56:39,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:56:39,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:56:39,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:56:39,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:56:39,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:56:39,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-09-24 15:56:39,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35b53dbea/6117d92e59494dd38e6fcdb1a8060b30/FLAG2a8df204e [2020-09-24 15:56:40,337 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:56:40,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-09-24 15:56:40,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35b53dbea/6117d92e59494dd38e6fcdb1a8060b30/FLAG2a8df204e [2020-09-24 15:56:40,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35b53dbea/6117d92e59494dd38e6fcdb1a8060b30 [2020-09-24 15:56:40,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:56:40,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:56:40,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:56:40,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:56:40,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:56:40,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:56:40" (1/1) ... [2020-09-24 15:56:40,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:40, skipping insertion in model container [2020-09-24 15:56:40,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:56:40" (1/1) ... [2020-09-24 15:56:40,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:56:40,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:56:41,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:56:41,075 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:56:41,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:56:41,120 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:56:41,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41 WrapperNode [2020-09-24 15:56:41,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:56:41,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:56:41,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:56:41,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:56:41,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (1/1) ... [2020-09-24 15:56:41,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (1/1) ... [2020-09-24 15:56:41,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (1/1) ... [2020-09-24 15:56:41,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (1/1) ... [2020-09-24 15:56:41,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (1/1) ... [2020-09-24 15:56:41,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (1/1) ... [2020-09-24 15:56:41,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (1/1) ... [2020-09-24 15:56:41,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:56:41,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:56:41,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:56:41,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:56:41,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:56:41,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:56:41,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:56:41,333 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-24 15:56:41,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:56:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:56:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:56:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-24 15:56:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:56:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:56:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:56:41,584 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:56:41,587 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:56:41,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:56:41 BoogieIcfgContainer [2020-09-24 15:56:41,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:56:41,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:56:41,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:56:41,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:56:41,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:56:40" (1/3) ... [2020-09-24 15:56:41,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c98b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:56:41, skipping insertion in model container [2020-09-24 15:56:41,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:41" (2/3) ... [2020-09-24 15:56:41,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c98b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:56:41, skipping insertion in model container [2020-09-24 15:56:41,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:56:41" (3/3) ... [2020-09-24 15:56:41,604 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-09-24 15:56:41,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:56:41,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:56:41,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:56:41,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:56:41,708 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:56:41,708 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:56:41,708 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:56:41,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:56:41,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:56:41,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:56:41,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:56:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-24 15:56:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 15:56:41,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:41,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:56:41,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:41,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash 935018920, now seen corresponding path program 1 times [2020-09-24 15:56:41,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:41,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936220139] [2020-09-24 15:56:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:41,995 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:41,995 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:41,995 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:41,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:41,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:41,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:41,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 15:56:41,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:56:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 15:56:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 15:56:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:42,157 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:42,157 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:42,157 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:42,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:42,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:42,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:42,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 15:56:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:42,195 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:42,195 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:42,195 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:42,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:42,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:42,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:56:42,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:56:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:56:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:56:42,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936220139] [2020-09-24 15:56:42,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:56:42,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:56:42,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787340460] [2020-09-24 15:56:42,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:56:42,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:42,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:56:42,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:56:42,332 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 8 states. [2020-09-24 15:56:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:42,602 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-09-24 15:56:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 15:56:42,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-24 15:56:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:42,620 INFO L225 Difference]: With dead ends: 57 [2020-09-24 15:56:42,620 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 15:56:42,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:56:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 15:56:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-24 15:56:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 15:56:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-09-24 15:56:42,687 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-09-24 15:56:42,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:42,688 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-09-24 15:56:42,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:56:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-09-24 15:56:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 15:56:42,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:42,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:56:42,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:56:42,693 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:42,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2135506668, now seen corresponding path program 1 times [2020-09-24 15:56:42,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:42,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609202659] [2020-09-24 15:56:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:42,720 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:42,721 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:42,721 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:42,721 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:42,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 15:56:42,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:56:42,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 15:56:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:42,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:42,764 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:42,765 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:42,765 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:42,766 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:42,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:42,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:42,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:42,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 15:56:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 15:56:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:42,809 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:42,809 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:42,810 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:42,810 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:42,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 15:56:42,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 15:56:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 15:56:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:56:42,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609202659] [2020-09-24 15:56:42,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:56:42,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:56:42,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611201148] [2020-09-24 15:56:42,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:56:42,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:42,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:56:42,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:56:42,885 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-09-24 15:56:42,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:42,992 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 15:56:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:56:42,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-24 15:56:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:42,994 INFO L225 Difference]: With dead ends: 56 [2020-09-24 15:56:42,995 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 15:56:42,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:56:42,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 15:56:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-24 15:56:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 15:56:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-09-24 15:56:43,004 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-09-24 15:56:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:43,004 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-09-24 15:56:43,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:56:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-09-24 15:56:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:56:43,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:43,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:56:43,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:56:43,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:43,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1044754306, now seen corresponding path program 1 times [2020-09-24 15:56:43,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:43,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949972620] [2020-09-24 15:56:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:43,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:43,111 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:43,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:43,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:43,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 15:56:43,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 15:56:43,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:56:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 15:56:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:56:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:43,202 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:43,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:43,202 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:43,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:43,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:43,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:43,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 15:56:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:43,255 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:43,255 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:43,255 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:43,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:43,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 15:56:43,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 15:56:43,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:56:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 15:56:43,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 15:56:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:43,389 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:43,390 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:43,390 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:43,390 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:43,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 15:56:43,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:56:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:56:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:56:43,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949972620] [2020-09-24 15:56:43,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:56:43,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:56:43,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391412473] [2020-09-24 15:56:43,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:56:43,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:43,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:56:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:56:43,477 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 11 states. [2020-09-24 15:56:43,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:43,694 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-09-24 15:56:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 15:56:43,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 15:56:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:43,695 INFO L225 Difference]: With dead ends: 32 [2020-09-24 15:56:43,695 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:56:43,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:56:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:56:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:56:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:56:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:56:43,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-09-24 15:56:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:43,698 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:56:43,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:56:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:56:43,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:56:43,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:56:43,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:56:43,813 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 15:56:43,813 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:56:43,813 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:56:43,813 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:56:43,813 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:56:43,813 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:56:43,814 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 15:56:43,814 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 15:56:43,814 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 15:56:43,814 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 15:56:43,814 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 15:56:43,814 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 15:56:43,814 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-09-24 15:56:43,815 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-09-24 15:56:43,815 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-09-24 15:56:43,815 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-09-24 15:56:43,815 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-09-24 15:56:43,815 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-09-24 15:56:43,815 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-24 15:56:43,815 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 15:56:43,815 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 15:56:43,816 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-09-24 15:56:43,816 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-09-24 15:56:43,816 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 15:56:43,816 INFO L268 CegarLoopResult]: For program point L39-2(line 39) no Hoare annotation was computed. [2020-09-24 15:56:43,816 INFO L268 CegarLoopResult]: For program point L39-3(line 39) no Hoare annotation was computed. [2020-09-24 15:56:43,816 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-09-24 15:56:43,817 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= (+ |addition_#in~n| 1) 0) (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2020-09-24 15:56:43,817 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-09-24 15:56:43,817 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 15:56:43,817 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 15:56:43,817 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= addition_~n 0))) [2020-09-24 15:56:43,817 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-24 15:56:43,818 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-09-24 15:56:43,818 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 15:56:43,818 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 15:56:43,818 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 15:56:43,818 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-24 15:56:43,818 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-09-24 15:56:43,818 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-24 15:56:43,819 INFO L268 CegarLoopResult]: For program point L13(lines 13 23) no Hoare annotation was computed. [2020-09-24 15:56:43,819 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-09-24 15:56:43,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:56:43 BoogieIcfgContainer [2020-09-24 15:56:43,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:56:43,830 INFO L168 Benchmark]: Toolchain (without parser) took 3126.26 ms. Allocated memory was 141.6 MB in the beginning and 234.9 MB in the end (delta: 93.3 MB). Free memory was 102.4 MB in the beginning and 118.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:43,831 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:56:43,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.48 ms. Allocated memory is still 141.6 MB. Free memory was 101.8 MB in the beginning and 92.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:43,833 INFO L168 Benchmark]: Boogie Preprocessor took 129.18 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 92.3 MB in the beginning and 181.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:43,834 INFO L168 Benchmark]: RCFGBuilder took 340.68 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 167.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:43,836 INFO L168 Benchmark]: TraceAbstraction took 2232.91 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 166.9 MB in the beginning and 118.7 MB in the end (delta: 48.2 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:43,840 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 413.48 ms. Allocated memory is still 141.6 MB. Free memory was 101.8 MB in the beginning and 92.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.18 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 92.3 MB in the beginning and 181.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.68 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 167.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2232.91 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 166.9 MB in the beginning and 118.7 MB in the end (delta: 48.2 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 94 SDslu, 279 SDs, 0 SdLazy, 220 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 31 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 10457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/5 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...