/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:16:51,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:16:51,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:16:51,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:16:51,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:16:51,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:16:51,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:16:51,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:16:51,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:16:51,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:16:51,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:16:51,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:16:51,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:16:51,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:16:51,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:16:51,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:16:51,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:16:51,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:16:51,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:16:51,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:16:51,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:16:51,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:16:51,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:16:51,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:16:51,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:16:51,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:16:51,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:16:51,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:16:51,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:16:51,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:16:51,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:16:51,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:16:51,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:16:51,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:16:51,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:16:51,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:16:51,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:16:51,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:16:51,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:16:51,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:16:51,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:16:51,576 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 [2020-08-18 20:16:51,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:16:51,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:16:51,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:16:51,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:16:51,625 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:16:51,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:16:51,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:16:51,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:16:51,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:16:51,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:16:51,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:16:51,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:16:51,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:16:51,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:16:51,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:16:51,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:16:51,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:16:51,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:16:51,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:16:51,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:16:51,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:16:51,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:16:51,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:16:51,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:16:51,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:16:51,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:16:51,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:16:51,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:16:51,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:16:51,630 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 -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:16:51,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:16:51,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:16:51,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:16:51,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:16:51,953 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:16:51,956 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-08-18 20:16:52,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/403f4f581/8bf454d3591b4e3982aa7196a34ed559/FLAG76c2f1ca5 [2020-08-18 20:16:52,473 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:16:52,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-08-18 20:16:52,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/403f4f581/8bf454d3591b4e3982aa7196a34ed559/FLAG76c2f1ca5 [2020-08-18 20:16:52,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/403f4f581/8bf454d3591b4e3982aa7196a34ed559 [2020-08-18 20:16:52,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:16:52,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:16:52,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:16:52,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:16:52,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:16:52,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:16:52" (1/1) ... [2020-08-18 20:16:52,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144c4f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:52, skipping insertion in model container [2020-08-18 20:16:52,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:16:52" (1/1) ... [2020-08-18 20:16:52,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:16:52,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:16:53,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:16:53,096 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:16:53,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:16:53,123 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:16:53,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53 WrapperNode [2020-08-18 20:16:53,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:16:53,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:16:53,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:16:53,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:16:53,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (1/1) ... [2020-08-18 20:16:53,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (1/1) ... [2020-08-18 20:16:53,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (1/1) ... [2020-08-18 20:16:53,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (1/1) ... [2020-08-18 20:16:53,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (1/1) ... [2020-08-18 20:16:53,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (1/1) ... [2020-08-18 20:16:53,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (1/1) ... [2020-08-18 20:16:53,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:16:53,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:16:53,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:16:53,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:16:53,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (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 [2020-08-18 20:16:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:16:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:16:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-18 20:16:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-18 20:16:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:16:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:16:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:16:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-18 20:16:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-18 20:16:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:16:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:16:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:16:53,528 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:16:53,529 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 20:16:53,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:16:53 BoogieIcfgContainer [2020-08-18 20:16:53,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:16:53,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:16:53,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:16:53,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:16:53,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:16:52" (1/3) ... [2020-08-18 20:16:53,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333f97b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:16:53, skipping insertion in model container [2020-08-18 20:16:53,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:16:53" (2/3) ... [2020-08-18 20:16:53,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333f97b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:16:53, skipping insertion in model container [2020-08-18 20:16:53,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:16:53" (3/3) ... [2020-08-18 20:16:53,553 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2020-08-18 20:16:53,585 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:16:53,603 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:16:53,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:16:53,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:16:53,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:16:53,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:16:53,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:16:53,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:16:53,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:16:53,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:16:53,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:16:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-18 20:16:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 20:16:53,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:16:53,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:16:53,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:16:53,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:16:53,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-18 20:16:53,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:16:53,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225787344] [2020-08-18 20:16:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:16:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:53,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:16:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:53,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:16:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:16:54,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225787344] [2020-08-18 20:16:54,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:16:54,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:16:54,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936702676] [2020-08-18 20:16:54,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:16:54,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:16:54,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:16:54,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:16:54,031 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-18 20:16:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:16:54,195 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-18 20:16:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:16:54,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-18 20:16:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:16:54,216 INFO L225 Difference]: With dead ends: 44 [2020-08-18 20:16:54,216 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 20:16:54,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:16:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 20:16:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-18 20:16:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 20:16:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-18 20:16:54,309 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-18 20:16:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:16:54,311 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-18 20:16:54,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:16:54,312 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-18 20:16:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 20:16:54,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:16:54,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:16:54,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:16:54,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:16:54,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:16:54,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-18 20:16:54,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:16:54,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696231389] [2020-08-18 20:16:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:16:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:16:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:16:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:16:54,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696231389] [2020-08-18 20:16:54,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:16:54,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:16:54,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733146020] [2020-08-18 20:16:54,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:16:54,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:16:54,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:16:54,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:16:54,424 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-18 20:16:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:16:54,495 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-18 20:16:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:16:54,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 20:16:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:16:54,498 INFO L225 Difference]: With dead ends: 36 [2020-08-18 20:16:54,498 INFO L226 Difference]: Without dead ends: 32 [2020-08-18 20:16:54,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:16:54,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-18 20:16:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-18 20:16:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 20:16:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-18 20:16:54,510 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-18 20:16:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:16:54,511 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-18 20:16:54,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:16:54,511 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-18 20:16:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 20:16:54,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:16:54,515 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] [2020-08-18 20:16:54,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:16:54,516 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:16:54,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:16:54,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-18 20:16:54,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:16:54,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275592830] [2020-08-18 20:16:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:16:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:16:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:16:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:16:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:16:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:16:54,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275592830] [2020-08-18 20:16:54,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:16:54,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 20:16:54,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798106338] [2020-08-18 20:16:54,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:16:54,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:16:54,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:16:54,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:16:54,656 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-08-18 20:16:54,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:16:54,750 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-18 20:16:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:16:54,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-18 20:16:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:16:54,753 INFO L225 Difference]: With dead ends: 58 [2020-08-18 20:16:54,753 INFO L226 Difference]: Without dead ends: 34 [2020-08-18 20:16:54,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:16:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-18 20:16:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-18 20:16:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 20:16:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-18 20:16:54,765 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-18 20:16:54,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:16:54,766 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-18 20:16:54,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:16:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-18 20:16:54,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 20:16:54,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:16:54,771 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 20:16:54,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:16:54,772 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:16:54,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:16:54,774 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-18 20:16:54,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:16:54,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287941576] [2020-08-18 20:16:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:16:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:16:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:16:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:54,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:16:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:16:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 20:16:55,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287941576] [2020-08-18 20:16:55,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:16:55,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 20:16:55,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195388032] [2020-08-18 20:16:55,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:16:55,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:16:55,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:16:55,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:16:55,058 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 9 states. [2020-08-18 20:16:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:16:55,128 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2020-08-18 20:16:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:16:55,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-08-18 20:16:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:16:55,131 INFO L225 Difference]: With dead ends: 46 [2020-08-18 20:16:55,131 INFO L226 Difference]: Without dead ends: 42 [2020-08-18 20:16:55,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:16:55,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-18 20:16:55,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-08-18 20:16:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-18 20:16:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-08-18 20:16:55,143 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2020-08-18 20:16:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:16:55,143 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-08-18 20:16:55,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:16:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-08-18 20:16:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 20:16:55,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:16:55,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:16:55,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:16:55,146 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:16:55,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:16:55,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1725129826, now seen corresponding path program 1 times [2020-08-18 20:16:55,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:16:55,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429599661] [2020-08-18 20:16:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:16:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:16:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:16:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:16:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:16:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 20:16:55,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429599661] [2020-08-18 20:16:55,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:16:55,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 20:16:55,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160079388] [2020-08-18 20:16:55,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:16:55,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:16:55,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:16:55,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:16:55,245 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 7 states. [2020-08-18 20:16:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:16:55,377 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2020-08-18 20:16:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:16:55,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-18 20:16:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:16:55,380 INFO L225 Difference]: With dead ends: 71 [2020-08-18 20:16:55,380 INFO L226 Difference]: Without dead ends: 39 [2020-08-18 20:16:55,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:16:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-18 20:16:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-18 20:16:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 20:16:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2020-08-18 20:16:55,391 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 28 [2020-08-18 20:16:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:16:55,392 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2020-08-18 20:16:55,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:16:55,392 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2020-08-18 20:16:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-18 20:16:55,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:16:55,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 20:16:55,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:16:55,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:16:55,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:16:55,395 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-18 20:16:55,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:16:55,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265348538] [2020-08-18 20:16:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:16:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:16:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:16:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:16:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:16:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:16:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:16:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 20:16:55,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265348538] [2020-08-18 20:16:55,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:16:55,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 20:16:55,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775030484] [2020-08-18 20:16:55,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:16:55,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:16:55,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:16:55,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:16:55,500 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2020-08-18 20:16:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:16:55,582 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2020-08-18 20:16:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:16:55,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-08-18 20:16:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:16:55,585 INFO L225 Difference]: With dead ends: 74 [2020-08-18 20:16:55,585 INFO L226 Difference]: Without dead ends: 41 [2020-08-18 20:16:55,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:16:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-18 20:16:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-18 20:16:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-18 20:16:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-08-18 20:16:55,603 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 39 [2020-08-18 20:16:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:16:55,607 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-08-18 20:16:55,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:16:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-08-18 20:16:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 20:16:55,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:16:55,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 20:16:55,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:16:55,612 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:16:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:16:55,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-18 20:16:55,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:16:55,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60446509] [2020-08-18 20:16:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:16:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:16:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:16:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:16:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 20:16:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:16:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 20:16:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:16:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 20:16:55,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60446509] [2020-08-18 20:16:55,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:16:55,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 20:16:55,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530126121] [2020-08-18 20:16:55,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:16:55,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:16:55,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:16:55,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:16:55,764 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2020-08-18 20:16:55,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:16:55,889 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-18 20:16:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:16:55,890 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-18 20:16:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:16:55,891 INFO L225 Difference]: With dead ends: 41 [2020-08-18 20:16:55,891 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:16:55,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:16:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:16:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:16:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:16:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:16:55,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-08-18 20:16:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:16:55,894 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:16:55,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:16:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:16:55,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:16:55,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:16:55,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:16:56,048 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 20:16:56,048 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:16:56,048 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:16:56,048 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 20:16:56,049 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 20:16:56,049 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 20:16:56,049 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-08-18 20:16:56,049 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-08-18 20:16:56,050 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-08-18 20:16:56,050 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-08-18 20:16:56,050 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-08-18 20:16:56,050 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-08-18 20:16:56,050 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 2 main_~x~0) (<= main_~x~0 2)) [2020-08-18 20:16:56,051 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-08-18 20:16:56,051 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-08-18 20:16:56,051 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-08-18 20:16:56,051 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2020-08-18 20:16:56,051 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-08-18 20:16:56,052 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2020-08-18 20:16:56,052 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-08-18 20:16:56,052 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-08-18 20:16:56,052 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-08-18 20:16:56,052 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-08-18 20:16:56,053 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-08-18 20:16:56,053 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-08-18 20:16:56,053 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2020-08-18 20:16:56,053 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-08-18 20:16:56,054 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= 3 |fibo1_#in~n|)) (and (<= |fibo1_#t~ret0| 1) (< 1 fibo1_~n) (<= 1 |fibo1_#t~ret0|) .cse0))) [2020-08-18 20:16:56,054 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-08-18 20:16:56,054 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-08-18 20:16:56,054 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-08-18 20:16:56,055 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-08-18 20:16:56,055 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-08-18 20:16:56,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:16:56 BoogieIcfgContainer [2020-08-18 20:16:56,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:16:56,066 INFO L168 Benchmark]: Toolchain (without parser) took 3202.59 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 103.2 MB in the beginning and 85.4 MB in the end (delta: 17.7 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:16:56,067 INFO L168 Benchmark]: CDTParser took 1.53 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:16:56,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.23 ms. Allocated memory is still 139.5 MB. Free memory was 103.0 MB in the beginning and 92.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:16:56,069 INFO L168 Benchmark]: Boogie Preprocessor took 119.74 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.9 MB in the beginning and 182.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:16:56,069 INFO L168 Benchmark]: RCFGBuilder took 289.13 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 168.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:16:56,070 INFO L168 Benchmark]: TraceAbstraction took 2527.14 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.8 MB in the beginning and 85.4 MB in the end (delta: 82.4 MB). Peak memory consumption was 114.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:16:56,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.53 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.23 ms. Allocated memory is still 139.5 MB. Free memory was 103.0 MB in the beginning and 92.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.74 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.9 MB in the beginning and 182.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.13 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 168.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2527.14 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.8 MB in the beginning and 85.4 MB in the end (delta: 82.4 MB). Peak memory consumption was 114.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 212 SDtfs, 96 SDslu, 767 SDs, 0 SdLazy, 354 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 65 PreInvPairs, 73 NumberOfFragments, 57 HoareAnnotationTreeSize, 65 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 10186 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 27/46 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...