/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:44:07,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:44:07,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:44:07,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:44:07,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:44:07,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:44:07,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:44:07,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:44:07,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:44:07,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:44:07,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:44:07,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:44:07,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:44:07,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:44:07,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:44:07,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:44:07,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:44:07,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:44:07,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:44:07,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:44:07,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:44:07,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:44:07,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:44:07,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:44:07,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:44:07,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:44:07,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:44:07,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:44:07,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:44:07,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:44:07,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:44:07,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:44:07,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:44:07,371 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:44:07,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:44:07,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:44:07,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:44:07,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:44:07,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:44:07,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:44:07,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:44:07,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:44:07,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:44:07,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:44:07,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:44:07,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:44:07,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:44:07,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:44:07,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:44:07,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:44:07,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:44:07,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:44:07,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:44:07,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:44:07,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:44:07,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:44:07,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:44:07,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:44:07,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:44:07,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:44:07,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:44:07,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:44:07,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:44:07,877 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:44:07,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-09-04 13:44:07,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6836536bf/7615124a283f44b29d2ab68eccd7f27c/FLAGa8a3f4190 [2020-09-04 13:44:08,511 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:44:08,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-09-04 13:44:08,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6836536bf/7615124a283f44b29d2ab68eccd7f27c/FLAGa8a3f4190 [2020-09-04 13:44:08,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6836536bf/7615124a283f44b29d2ab68eccd7f27c [2020-09-04 13:44:08,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:44:08,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:44:08,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:44:08,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:44:08,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:44:08,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138a7dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:08, skipping insertion in model container [2020-09-04 13:44:08,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:44:08" (1/1) ... [2020-09-04 13:44:08,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:44:08,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:44:09,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:44:09,158 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:44:09,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:44:09,191 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:44:09,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09 WrapperNode [2020-09-04 13:44:09,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:44:09,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:44:09,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:44:09,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:44:09,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... [2020-09-04 13:44:09,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:44:09,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:44:09,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:44:09,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:44:09,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:44:09,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:44:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:44:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:44:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:44:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:44:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:44:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:44:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:44:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:44:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:44:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:44:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:44:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:44:09,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:44:09,612 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:44:09,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:44:09 BoogieIcfgContainer [2020-09-04 13:44:09,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:44:09,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:44:09,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:44:09,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:44:09,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:44:08" (1/3) ... [2020-09-04 13:44:09,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9123b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:44:09, skipping insertion in model container [2020-09-04 13:44:09,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:44:09" (2/3) ... [2020-09-04 13:44:09,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9123b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:44:09, skipping insertion in model container [2020-09-04 13:44:09,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:44:09" (3/3) ... [2020-09-04 13:44:09,629 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-09-04 13:44:09,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:44:09,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:44:09,671 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:44:09,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:44:09,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:44:09,699 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:44:09,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:44:09,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:44:09,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:44:09,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:44:09,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:44:09,719 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-04 13:44:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:44:09,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:09,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:09,727 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:09,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:09,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1915647303, now seen corresponding path program 1 times [2020-09-04 13:44:09,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:09,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455573961] [2020-09-04 13:44:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:09,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455573961] [2020-09-04 13:44:09,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:09,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 13:44:09,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345868385] [2020-09-04 13:44:09,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 13:44:09,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:09,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 13:44:09,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:44:09,906 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-09-04 13:44:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:09,936 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-09-04 13:44:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 13:44:09,938 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-04 13:44:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:09,949 INFO L225 Difference]: With dead ends: 32 [2020-09-04 13:44:09,949 INFO L226 Difference]: Without dead ends: 13 [2020-09-04 13:44:09,954 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 [2020-09-04 13:44:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-09-04 13:44:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-09-04 13:44:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-09-04 13:44:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-09-04 13:44:10,003 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-09-04 13:44:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,004 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-09-04 13:44:10,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 13:44:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-09-04 13:44:10,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 13:44:10,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:44:10,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2084433522, now seen corresponding path program 1 times [2020-09-04 13:44:10,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487810179] [2020-09-04 13:44:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:10,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487810179] [2020-09-04 13:44:10,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:44:10,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:44:10,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970930799] [2020-09-04 13:44:10,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:44:10,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:10,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:44:10,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:44:10,160 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-09-04 13:44:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:10,252 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-09-04 13:44:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:44:10,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-04 13:44:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:10,255 INFO L225 Difference]: With dead ends: 21 [2020-09-04 13:44:10,260 INFO L226 Difference]: Without dead ends: 16 [2020-09-04 13:44:10,261 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 [2020-09-04 13:44:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-04 13:44:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-09-04 13:44:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-04 13:44:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-09-04 13:44:10,274 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-09-04 13:44:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,274 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-09-04 13:44:10,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:44:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-09-04 13:44:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-04 13:44:10,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:44:10,281 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,281 INFO L82 PathProgramCache]: Analyzing trace with hash 249504553, now seen corresponding path program 1 times [2020-09-04 13:44:10,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074715691] [2020-09-04 13:44:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:10,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074715691] [2020-09-04 13:44:10,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806635428] [2020-09-04 13:44:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:10,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:44:10,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:10,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:10,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:10,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-09-04 13:44:10,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182735855] [2020-09-04 13:44:10,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:44:10,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:10,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:44:10,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:44:10,604 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2020-09-04 13:44:10,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:10,676 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-09-04 13:44:10,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:44:10,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-09-04 13:44:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:10,677 INFO L225 Difference]: With dead ends: 24 [2020-09-04 13:44:10,678 INFO L226 Difference]: Without dead ends: 19 [2020-09-04 13:44:10,678 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 [2020-09-04 13:44:10,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-04 13:44:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-04 13:44:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 13:44:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-09-04 13:44:10,684 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2020-09-04 13:44:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:10,685 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-09-04 13:44:10,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:44:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-09-04 13:44:10,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:44:10,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:44:10,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:44:10,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-04 13:44:10,900 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:44:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:44:10,901 INFO L82 PathProgramCache]: Analyzing trace with hash -2070634734, now seen corresponding path program 2 times [2020-09-04 13:44:10,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:44:10,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333457444] [2020-09-04 13:44:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:44:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:44:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:44:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:11,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333457444] [2020-09-04 13:44:11,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636322611] [2020-09-04 13:44:11,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:44:11,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:44:11,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:44:11,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-04 13:44:11,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:44:11,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:44:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:44:11,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:44:11,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-09-04 13:44:11,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888341124] [2020-09-04 13:44:11,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 13:44:11,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:44:11,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 13:44:11,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:44:11,184 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2020-09-04 13:44:11,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:44:11,229 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-09-04 13:44:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:44:11,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-09-04 13:44:11,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:44:11,231 INFO L225 Difference]: With dead ends: 19 [2020-09-04 13:44:11,231 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:44:11,232 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 [2020-09-04 13:44:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:44:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:44:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:44:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:44:11,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-04 13:44:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:44:11,234 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:44:11,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 13:44:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:44:11,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:44:11,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:44:11,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:44:11,506 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:44:11,506 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:44:11,506 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:44:11,507 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:44:11,507 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:44:11,507 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:44:11,507 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:11,507 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 13:44:11,508 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:11,508 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 13:44:11,508 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-09-04 13:44:11,508 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2020-09-04 13:44:11,508 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-04 13:44:11,508 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-04 13:44:11,509 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-09-04 13:44:11,509 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2020-09-04 13:44:11,509 INFO L264 CegarLoopResult]: At program point L16-5(lines 16 19) the Hoare annotation is: (and (<= 1 main_~x~0) (<= 0 main_~y~0) (<= main_~y~0 main_~x~0)) [2020-09-04 13:44:11,509 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-09-04 13:44:11,509 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 13:44:11,510 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:44:11,510 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-04 13:44:11,510 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-04 13:44:11,510 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-04 13:44:11,510 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-04 13:44:11,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:44:11 BoogieIcfgContainer [2020-09-04 13:44:11,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:44:11,538 INFO L168 Benchmark]: Toolchain (without parser) took 2653.19 ms. Allocated memory was 137.9 MB in the beginning and 230.2 MB in the end (delta: 92.3 MB). Free memory was 101.1 MB in the beginning and 197.3 MB in the end (delta: -96.2 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:11,539 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:44:11,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.67 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:11,541 INFO L168 Benchmark]: Boogie Preprocessor took 36.06 ms. Allocated memory is still 137.9 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:11,542 INFO L168 Benchmark]: RCFGBuilder took 388.29 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 89.9 MB in the beginning and 166.5 MB in the end (delta: -76.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:11,543 INFO L168 Benchmark]: TraceAbstraction took 1915.29 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 165.9 MB in the beginning and 197.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:44:11,547 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.67 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.06 ms. Allocated memory is still 137.9 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.29 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 89.9 MB in the beginning and 166.5 MB in the end (delta: -76.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1915.29 ms. Allocated memory was 199.8 MB in the beginning and 230.2 MB in the end (delta: 30.4 MB). Free memory was 165.9 MB in the beginning and 197.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 89.9 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: (1 <= x && 0 <= y) && y <= 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, 7 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...