/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 0.1.25-267fbe0 [2020-07-17 12:16:41,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:16:41,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:16:41,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:16:41,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:16:41,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:16:41,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:16:41,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:16:41,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:16:41,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:16:41,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:16:41,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:16:41,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:16:41,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:16:41,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:16:41,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:16:41,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:16:41,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:16:41,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:16:41,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:16:41,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:16:41,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:16:41,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:16:41,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:16:41,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:16:41,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:16:41,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:16:41,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:16:41,636 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 [2020-07-17 12:16:41,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:16:41,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:16:41,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:16:41,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:16:41,676 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:16:41,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:16:41,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:16:41,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:16:41,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:16:41,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:16:41,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:16:41,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:16:41,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:16:41,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:16:41,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:16:41,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:16:41,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:16:41,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:16:41,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:16:41,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:16:41,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:16:41,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:16:41,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:16:41,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:16:41,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:16:41,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:16:41,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:16:41,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:16:41,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:16:41,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:16:41,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:16:41,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:16:41,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:16:41,999 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:16:41,999 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:16:42,000 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-17 12:16:42,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10dfb67a1/9908cbf02b964e41905fbd2493090241/FLAGbb4baae8a [2020-07-17 12:16:42,457 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:16:42,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-17 12:16:42,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10dfb67a1/9908cbf02b964e41905fbd2493090241/FLAGbb4baae8a [2020-07-17 12:16:42,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10dfb67a1/9908cbf02b964e41905fbd2493090241 [2020-07-17 12:16:42,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:16:42,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:16:42,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:42,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:16:42,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:16:42,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:42" (1/1) ... [2020-07-17 12:16:42,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b19309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:42, skipping insertion in model container [2020-07-17 12:16:42,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:42" (1/1) ... [2020-07-17 12:16:42,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:16:42,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:16:43,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:43,120 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:16:43,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:43,151 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:16:43,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43 WrapperNode [2020-07-17 12:16:43,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:43,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:16:43,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:16:43,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:16:43,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (1/1) ... [2020-07-17 12:16:43,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (1/1) ... [2020-07-17 12:16:43,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (1/1) ... [2020-07-17 12:16:43,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (1/1) ... [2020-07-17 12:16:43,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (1/1) ... [2020-07-17 12:16:43,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (1/1) ... [2020-07-17 12:16:43,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (1/1) ... [2020-07-17 12:16:43,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:16:43,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:16:43,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:16:43,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:16:43,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (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 [2020-07-17 12:16:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:16:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:16:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:16:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:16:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:16:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:16:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:16:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:16:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:16:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:16:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:16:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:16:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:16:43,528 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:16:43,528 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:16:43,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:43 BoogieIcfgContainer [2020-07-17 12:16:43,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:16:43,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:16:43,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:16:43,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:16:43,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:16:42" (1/3) ... [2020-07-17 12:16:43,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75248d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:43, skipping insertion in model container [2020-07-17 12:16:43,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:43" (2/3) ... [2020-07-17 12:16:43,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75248d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:43, skipping insertion in model container [2020-07-17 12:16:43,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:43" (3/3) ... [2020-07-17 12:16:43,546 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-07-17 12:16:43,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:16:43,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:16:43,580 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:16:43,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:16:43,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:16:43,603 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:16:43,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:16:43,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:16:43,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:16:43,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:16:43,604 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:16:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-17 12:16:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 12:16:43,627 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:43,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:43,629 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:43,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1915647303, now seen corresponding path program 1 times [2020-07-17 12:16:43,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:43,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584170857] [2020-07-17 12:16:43,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:43,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584170857] [2020-07-17 12:16:43,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:43,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 12:16:43,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591476174] [2020-07-17 12:16:43,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 12:16:43,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:43,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 12:16:43,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 12:16:43,761 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-17 12:16:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:43,783 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-07-17 12:16:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 12:16:43,785 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 12:16:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:43,793 INFO L225 Difference]: With dead ends: 32 [2020-07-17 12:16:43,793 INFO L226 Difference]: Without dead ends: 13 [2020-07-17 12:16:43,796 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 [2020-07-17 12:16:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-17 12:16:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-17 12:16:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-17 12:16:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-17 12:16:43,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-17 12:16:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:43,833 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-17 12:16:43,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 12:16:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-17 12:16:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 12:16:43,835 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:43,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:43,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:16:43,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2084433522, now seen corresponding path program 1 times [2020-07-17 12:16:43,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:43,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368965321] [2020-07-17 12:16:43,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:43,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368965321] [2020-07-17 12:16:43,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:43,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:16:43,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649206673] [2020-07-17 12:16:43,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:16:43,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:43,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:16:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:16:43,955 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-17 12:16:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:44,001 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-17 12:16:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:16:44,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-17 12:16:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:44,004 INFO L225 Difference]: With dead ends: 21 [2020-07-17 12:16:44,005 INFO L226 Difference]: Without dead ends: 16 [2020-07-17 12:16:44,006 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 [2020-07-17 12:16:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-17 12:16:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-17 12:16:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-17 12:16:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-17 12:16:44,012 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-17 12:16:44,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:44,013 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-17 12:16:44,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:16:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-17 12:16:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 12:16:44,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:44,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:44,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:16:44,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:44,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:44,017 INFO L82 PathProgramCache]: Analyzing trace with hash 249504553, now seen corresponding path program 1 times [2020-07-17 12:16:44,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:44,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656170244] [2020-07-17 12:16:44,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:44,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656170244] [2020-07-17 12:16:44,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15880107] [2020-07-17 12:16:44,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-17 12:16:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:44,210 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-17 12:16:44,216 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:44,257 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:44,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:44,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-17 12:16:44,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542703217] [2020-07-17 12:16:44,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:16:44,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:44,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:16:44,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:44,316 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2020-07-17 12:16:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:44,396 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-17 12:16:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:16:44,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-17 12:16:44,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:44,398 INFO L225 Difference]: With dead ends: 24 [2020-07-17 12:16:44,398 INFO L226 Difference]: Without dead ends: 19 [2020-07-17 12:16:44,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:16:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-17 12:16:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-17 12:16:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-17 12:16:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-17 12:16:44,404 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2020-07-17 12:16:44,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:44,404 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-17 12:16:44,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:16:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-17 12:16:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 12:16:44,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:44,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:44,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-17 12:16:44,618 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2070634734, now seen corresponding path program 2 times [2020-07-17 12:16:44,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:44,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069034156] [2020-07-17 12:16:44,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:44,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069034156] [2020-07-17 12:16:44,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237214165] [2020-07-17 12:16:44,740 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-07-17 12:16:44,770 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 12:16:44,771 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:16:44,772 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-17 12:16:44,774 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:44,798 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:44,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:44,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-17 12:16:44,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394510844] [2020-07-17 12:16:44,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 12:16:44,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:44,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 12:16:44,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:16:44,828 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2020-07-17 12:16:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:44,867 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-07-17 12:16:44,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:16:44,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-07-17 12:16:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:44,868 INFO L225 Difference]: With dead ends: 19 [2020-07-17 12:16:44,868 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:16:44,869 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 [2020-07-17 12:16:44,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:16:44,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:16:44,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:16:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:16:44,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-17 12:16:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:44,871 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:16:44,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 12:16:44,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:16:44,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:16:45,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:45,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:16:45,133 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 12:16:45,133 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:16:45,133 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:16:45,134 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 12:16:45,134 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:16:45,134 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:16:45,134 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:45,134 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 12:16:45,134 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:45,135 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:45,135 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-07-17 12:16:45,135 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2020-07-17 12:16:45,135 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-17 12:16:45,135 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-07-17 12:16:45,135 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-07-17 12:16:45,136 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2020-07-17 12:16:45,136 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)) [2020-07-17 12:16:45,136 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-07-17 12:16:45,136 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 12:16:45,136 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-17 12:16:45,137 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-17 12:16:45,137 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-17 12:16:45,137 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-17 12:16:45,137 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-17 12:16:45,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:16:45 BoogieIcfgContainer [2020-07-17 12:16:45,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:16:45,157 INFO L168 Benchmark]: Toolchain (without parser) took 2265.98 ms. Allocated memory was 144.7 MB in the beginning and 234.4 MB in the end (delta: 89.7 MB). Free memory was 102.4 MB in the beginning and 203.3 MB in the end (delta: -100.9 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:45,158 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 12:16:45,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.09 ms. Allocated memory is still 144.7 MB. Free memory was 102.0 MB in the beginning and 92.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:45,160 INFO L168 Benchmark]: Boogie Preprocessor took 115.74 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 92.6 MB in the beginning and 181.9 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:45,161 INFO L168 Benchmark]: RCFGBuilder took 261.05 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 168.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:45,162 INFO L168 Benchmark]: TraceAbstraction took 1619.03 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 203.3 MB in the end (delta: -34.6 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:45,166 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.09 ms. Allocated memory is still 144.7 MB. Free memory was 102.0 MB in the beginning and 92.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.74 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 92.6 MB in the beginning and 181.9 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 261.05 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 168.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1619.03 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 203.3 MB in the end (delta: -34.6 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: 1.4s, 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, 0.2s 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, 0.4s 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...