/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:11:41,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:11:41,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:11:42,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:11:42,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:11:42,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:11:42,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:11:42,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:11:42,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:11:42,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:11:42,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:11:42,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:11:42,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:11:42,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:11:42,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:11:42,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:11:42,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:11:42,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:11:42,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:11:42,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:11:42,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:11:42,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:11:42,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:11:42,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:11:42,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:11:42,071 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 [2019-11-23 22:11:42,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:11:42,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:11:42,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:11:42,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:11:42,087 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:11:42,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:11:42,088 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:11:42,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:11:42,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:11:42,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:11:42,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:11:42,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:11:42,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:11:42,089 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:11:42,089 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:11:42,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:11:42,091 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:11:42,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:11:42,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:11:42,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:11:42,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:11:42,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:11:42,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:11:42,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:11:42,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:11:42,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:11:42,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:11:42,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:11:42,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:11:42,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:11:42,363 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:11:42,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:11:42,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:11:42,380 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:11:42,381 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:11:42,382 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-11-23 22:11:42,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/657dbba35/ddd4d05ef2f14e58ac02385c5a2bfe11/FLAG45a68368e [2019-11-23 22:11:42,891 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:11:42,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-11-23 22:11:42,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/657dbba35/ddd4d05ef2f14e58ac02385c5a2bfe11/FLAG45a68368e [2019-11-23 22:11:43,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/657dbba35/ddd4d05ef2f14e58ac02385c5a2bfe11 [2019-11-23 22:11:43,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:11:43,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:11:43,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:43,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:11:43,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:11:43,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252961a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43, skipping insertion in model container [2019-11-23 22:11:43,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:11:43,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:11:43,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:43,546 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:11:43,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:43,594 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:11:43,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43 WrapperNode [2019-11-23 22:11:43,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:43,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:43,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:11:43,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:11:43,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:43,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:11:43,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:11:43,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:11:43,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (1/1) ... [2019-11-23 22:11:43,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:11:43,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:11:43,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:11:43,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:11:43,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (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 [2019-11-23 22:11:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:11:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:11:43,962 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:11:43,962 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-23 22:11:43,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:43 BoogieIcfgContainer [2019-11-23 22:11:43,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:11:43,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:11:43,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:11:43,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:11:43,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:11:43" (1/3) ... [2019-11-23 22:11:43,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69839700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:43, skipping insertion in model container [2019-11-23 22:11:43,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:43" (2/3) ... [2019-11-23 22:11:43,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69839700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:43, skipping insertion in model container [2019-11-23 22:11:43,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:43" (3/3) ... [2019-11-23 22:11:43,972 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2019-11-23 22:11:43,982 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:11:43,989 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:11:44,003 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:11:44,036 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:11:44,037 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:11:44,037 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:11:44,037 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:11:44,038 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:11:44,038 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:11:44,038 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:11:44,038 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:11:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-23 22:11:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:11:44,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:44,067 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:44,067 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:44,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:44,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1269629357, now seen corresponding path program 1 times [2019-11-23 22:11:44,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:44,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230722479] [2019-11-23 22:11:44,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:44,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230722479] [2019-11-23 22:11:44,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:44,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:11:44,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950147314] [2019-11-23 22:11:44,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:11:44,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:44,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:11:44,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:11:44,302 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 5 states. [2019-11-23 22:11:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:44,427 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-11-23 22:11:44,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:11:44,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-23 22:11:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:44,439 INFO L225 Difference]: With dead ends: 30 [2019-11-23 22:11:44,440 INFO L226 Difference]: Without dead ends: 12 [2019-11-23 22:11:44,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:11:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-23 22:11:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-23 22:11:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 22:11:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-23 22:11:44,475 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-11-23 22:11:44,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:44,476 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-23 22:11:44,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:11:44,476 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-23 22:11:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:11:44,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:44,477 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:44,478 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:44,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:44,479 INFO L82 PathProgramCache]: Analyzing trace with hash 341011600, now seen corresponding path program 1 times [2019-11-23 22:11:44,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:44,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875667388] [2019-11-23 22:11:44,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:44,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875667388] [2019-11-23 22:11:44,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417037363] [2019-11-23 22:11:44,583 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 [2019-11-23 22:11:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:44,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-23 22:11:44,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:44,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:44,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:44,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-11-23 22:11:44,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185083165] [2019-11-23 22:11:44,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 22:11:44,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:44,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 22:11:44,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:11:44,709 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2019-11-23 22:11:44,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:44,890 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-23 22:11:44,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:11:44,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-11-23 22:11:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:44,891 INFO L225 Difference]: With dead ends: 15 [2019-11-23 22:11:44,891 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:11:44,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:44,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:11:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:11:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:11:44,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:11:44,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-23 22:11:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:44,894 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:11:44,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 22:11:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:11:44,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:11:45,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:45,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:11:45,162 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:11:45,162 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 66) no Hoare annotation was computed. [2019-11-23 22:11:45,163 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 67) no Hoare annotation was computed. [2019-11-23 22:11:45,163 INFO L444 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-23 22:11:45,163 INFO L444 ceAbstractionStarter]: For program point L50(lines 50 59) no Hoare annotation was computed. [2019-11-23 22:11:45,163 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 68) no Hoare annotation was computed. [2019-11-23 22:11:45,163 INFO L440 ceAbstractionStarter]: At program point L65(lines 9 69) the Hoare annotation is: (or (not (= 0 ULTIMATE.start_main_~__VERIFIER_assert__cond~0)) (<= (+ ULTIMATE.start_main_~main__x~0 50) 0)) [2019-11-23 22:11:45,164 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 22:11:45,164 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:11:45,164 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:11:45,164 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2019-11-23 22:11:45,164 INFO L440 ceAbstractionStarter]: At program point L41(lines 28 62) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 51) ULTIMATE.start_main_~main__y~0) (and (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) (<= (+ ULTIMATE.start_main_~main__x~0 4) (* 2 ULTIMATE.start_main_~main__y~0)))) [2019-11-23 22:11:45,164 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 61) no Hoare annotation was computed. [2019-11-23 22:11:45,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:11:45 BoogieIcfgContainer [2019-11-23 22:11:45,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:11:45,185 INFO L168 Benchmark]: Toolchain (without parser) took 1866.57 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 110.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:45,186 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 22:11:45,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.87 ms. Allocated memory is still 146.3 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:45,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.47 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.8 MB in the beginning and 182.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:45,194 INFO L168 Benchmark]: Boogie Preprocessor took 15.28 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 180.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:45,195 INFO L168 Benchmark]: RCFGBuilder took 238.39 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 170.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:45,196 INFO L168 Benchmark]: TraceAbstraction took 1214.70 ms. Allocated memory is still 203.4 MB. Free memory was 169.4 MB in the beginning and 110.6 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:45,211 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.87 ms. Allocated memory is still 146.3 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 114.47 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.8 MB in the beginning and 182.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 15.28 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 180.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 238.39 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 170.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1214.70 ms. Allocated memory is still 203.4 MB. Free memory was 169.4 MB in the beginning and 110.6 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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: 9]: Loop Invariant Derived loop invariant: !(0 == __VERIFIER_assert__cond) || main__x + 50 <= 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: main__x + 51 <= main__y || (main__x + 2 <= main__y && main__x + 4 <= 2 * main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 19 SDslu, 41 SDs, 0 SdLazy, 47 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 29 HoareAnnotationTreeSize, 2 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1018 SizeOfPredicates, 4 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...