/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 CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:46:54,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:46:54,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:46:54,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:46:54,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:46:54,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:46:54,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:46:54,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:46:54,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:46:54,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:46:54,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:46:54,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:46:54,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:46:54,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:46:54,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:46:54,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:46:54,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:46:54,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:46:54,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:46:54,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:46:54,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:46:54,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:46:54,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:46:54,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:46:54,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:46:54,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:46:54,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:46:54,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:46:54,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:46:54,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:46:54,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:46:54,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:46:54,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:46:54,455 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:46:54,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:46:54,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:46:54,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:46:54,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:46:54,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:46:54,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:46:54,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:46:54,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:46:54,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:46:54,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:46:54,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:46:54,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:46:54,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:46:54,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:46:54,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:46:54,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:46:54,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:46:54,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:46:54,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:46:54,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:46:54,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:46:54,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:46:54,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:46:54,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:46:54,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:46:54,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:46:54,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:46:54,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:46:54,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:46:54,871 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:46:54,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-19 21:46:54,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388835ee3/339616d043244b5da0e4b1154585eb9c/FLAG4209a2dc2 [2020-07-19 21:46:55,475 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:46:55,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-19 21:46:55,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388835ee3/339616d043244b5da0e4b1154585eb9c/FLAG4209a2dc2 [2020-07-19 21:46:55,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388835ee3/339616d043244b5da0e4b1154585eb9c [2020-07-19 21:46:55,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:46:55,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:46:55,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:46:55,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:46:55,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:46:55,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:46:55" (1/1) ... [2020-07-19 21:46:55,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289d4eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:55, skipping insertion in model container [2020-07-19 21:46:55,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:46:55" (1/1) ... [2020-07-19 21:46:55,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:46:55,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:46:56,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:46:56,088 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:46:56,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:46:56,125 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:46:56,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56 WrapperNode [2020-07-19 21:46:56,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:46:56,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:46:56,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:46:56,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:46:56,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (1/1) ... [2020-07-19 21:46:56,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (1/1) ... [2020-07-19 21:46:56,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (1/1) ... [2020-07-19 21:46:56,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (1/1) ... [2020-07-19 21:46:56,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (1/1) ... [2020-07-19 21:46:56,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (1/1) ... [2020-07-19 21:46:56,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (1/1) ... [2020-07-19 21:46:56,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:46:56,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:46:56,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:46:56,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:46:56,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-19 21:46:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:46:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:46:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:46:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:46:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:46:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:46:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:46:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:46:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:46:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:46:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:46:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:46:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:46:56,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:46:56,536 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 21:46:56,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:46:56 BoogieIcfgContainer [2020-07-19 21:46:56,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:46:56,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:46:56,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:46:56,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:46:56,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:46:55" (1/3) ... [2020-07-19 21:46:56,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bf3cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:46:56, skipping insertion in model container [2020-07-19 21:46:56,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:46:56" (2/3) ... [2020-07-19 21:46:56,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bf3cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:46:56, skipping insertion in model container [2020-07-19 21:46:56,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:46:56" (3/3) ... [2020-07-19 21:46:56,555 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-07-19 21:46:56,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:46:56,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:46:56,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:46:56,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:46:56,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:46:56,674 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:46:56,674 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:46:56,675 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:46:56,675 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:46:56,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:46:56,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:46:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-19 21:46:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-19 21:46:56,720 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:56,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:56,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:56,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1915647303, now seen corresponding path program 1 times [2020-07-19 21:46:56,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:56,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358419379] [2020-07-19 21:46:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f59af17 [2020-07-19 21:46:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:56,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358419379] [2020-07-19 21:46:56,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:56,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 21:46:56,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101508050] [2020-07-19 21:46:56,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 21:46:56,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:56,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 21:46:56,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 21:46:56,875 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-19 21:46:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:56,898 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-07-19 21:46:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 21:46:56,900 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-19 21:46:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:56,910 INFO L225 Difference]: With dead ends: 32 [2020-07-19 21:46:56,910 INFO L226 Difference]: Without dead ends: 13 [2020-07-19 21:46:56,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 21:46:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-19 21:46:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-19 21:46:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-19 21:46:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-19 21:46:56,960 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-19 21:46:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:56,961 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-19 21:46:56,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 21:46:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-19 21:46:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-19 21:46:56,962 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:56,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:56,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:46:56,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:56,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2084433522, now seen corresponding path program 1 times [2020-07-19 21:46:56,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:56,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497511981] [2020-07-19 21:46:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f59af17 [2020-07-19 21:46:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:57,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497511981] [2020-07-19 21:46:57,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:46:57,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:46:57,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577728049] [2020-07-19 21:46:57,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:46:57,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:57,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:46:57,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:46:57,123 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-19 21:46:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:57,188 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-19 21:46:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:46:57,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-19 21:46:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:57,191 INFO L225 Difference]: With dead ends: 21 [2020-07-19 21:46:57,192 INFO L226 Difference]: Without dead ends: 16 [2020-07-19 21:46:57,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 21:46:57,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-19 21:46:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-19 21:46:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-19 21:46:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-19 21:46:57,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-19 21:46:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:57,210 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-19 21:46:57,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:46:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-19 21:46:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-19 21:46:57,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:57,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:57,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:46:57,215 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:57,216 INFO L82 PathProgramCache]: Analyzing trace with hash 249504553, now seen corresponding path program 1 times [2020-07-19 21:46:57,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:57,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370378681] [2020-07-19 21:46:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f59af17 [2020-07-19 21:46:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:57,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370378681] [2020-07-19 21:46:57,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115705866] [2020-07-19 21:46:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f59af17 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:46:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:57,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-19 21:46:57,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:46:57,481 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 21:46:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:57,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:46:57,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-19 21:46:57,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326525596] [2020-07-19 21:46:57,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 21:46:57,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:57,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 21:46:57,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:46:57,524 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2020-07-19 21:46:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:57,596 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-19 21:46:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:46:57,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-19 21:46:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:57,598 INFO L225 Difference]: With dead ends: 24 [2020-07-19 21:46:57,598 INFO L226 Difference]: Without dead ends: 19 [2020-07-19 21:46:57,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-19 21:46:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-19 21:46:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-19 21:46:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-19 21:46:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-19 21:46:57,605 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2020-07-19 21:46:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:57,606 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-19 21:46:57,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 21:46:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-19 21:46:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-19 21:46:57,607 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:46:57,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:46:57,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 21:46:57,816 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:46:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:46:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2070634734, now seen corresponding path program 2 times [2020-07-19 21:46:57,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:46:57,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751826408] [2020-07-19 21:46:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f59af17 [2020-07-19 21:46:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:57,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751826408] [2020-07-19 21:46:57,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100989086] [2020-07-19 21:46:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7f59af17 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:46:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:46:58,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-19 21:46:58,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:46:58,101 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 21:46:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:46:58,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:46:58,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-19 21:46:58,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253027728] [2020-07-19 21:46:58,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-19 21:46:58,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:46:58,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-19 21:46:58,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-19 21:46:58,145 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2020-07-19 21:46:58,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:46:58,194 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-07-19 21:46:58,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 21:46:58,194 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-07-19 21:46:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:46:58,195 INFO L225 Difference]: With dead ends: 19 [2020-07-19 21:46:58,195 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 21:46:58,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-19 21:46:58,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 21:46:58,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 21:46:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 21:46:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 21:46:58,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-19 21:46:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:46:58,198 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 21:46:58,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-19 21:46:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 21:46:58,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 21:46:58,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:46:58,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 21:46:58,469 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 21:46:58,470 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:46:58,489 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:46:58,490 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 21:46:58,490 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 21:46:58,491 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 21:46:58,491 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-19 21:46:58,491 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-19 21:46:58,491 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-19 21:46:58,491 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-19 21:46:58,491 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-07-19 21:46:58,491 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2020-07-19 21:46:58,492 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-19 21:46:58,492 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-07-19 21:46:58,492 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-07-19 21:46:58,492 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2020-07-19 21:46:58,492 INFO L264 CegarLoopResult]: At program point L16-5(lines 16 19) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (<= 0 main_~y~0) (<= 1 main_~x~0)) [2020-07-19 21:46:58,493 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-07-19 21:46:58,493 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-19 21:46:58,493 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-19 21:46:58,493 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-19 21:46:58,494 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-19 21:46:58,494 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-19 21:46:58,494 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-19 21:46:58,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:46:58 BoogieIcfgContainer [2020-07-19 21:46:58,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:46:58,523 INFO L168 Benchmark]: Toolchain (without parser) took 2679.59 ms. Allocated memory was 145.2 MB in the beginning and 234.9 MB in the end (delta: 89.7 MB). Free memory was 103.1 MB in the beginning and 203.7 MB in the end (delta: -100.6 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:58,525 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:46:58,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.88 ms. Allocated memory is still 145.2 MB. Free memory was 102.6 MB in the beginning and 93.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:58,526 INFO L168 Benchmark]: Boogie Preprocessor took 32.55 ms. Allocated memory is still 145.2 MB. Free memory was 93.3 MB in the beginning and 91.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:58,527 INFO L168 Benchmark]: RCFGBuilder took 383.28 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.7 MB in the beginning and 169.2 MB in the end (delta: -77.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:58,528 INFO L168 Benchmark]: TraceAbstraction took 1975.56 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 169.2 MB in the beginning and 203.7 MB in the end (delta: -34.5 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:46:58,533 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.88 ms. Allocated memory is still 145.2 MB. Free memory was 102.6 MB in the beginning and 93.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.55 ms. Allocated memory is still 145.2 MB. Free memory was 93.3 MB in the beginning and 91.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.28 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.7 MB in the beginning and 169.2 MB in the end (delta: -77.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1975.56 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 169.2 MB in the beginning and 203.7 MB in the end (delta: -34.5 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (y <= x && 0 <= y) && 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 15 SDslu, 122 SDs, 0 SdLazy, 49 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 18 HoareAnnotationTreeSize, 10 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3014 SizeOfPredicates, 4 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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...