/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-acceleration/const_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:07:09,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:07:09,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:07:09,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:07:09,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:07:09,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:07:09,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:07:09,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:07:09,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:07:09,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:07:09,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:07:09,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:07:09,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:07:09,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:07:09,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:07:09,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:07:09,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:07:09,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:07:09,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:07:09,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:07:09,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:07:09,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:07:09,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:07:09,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:07:09,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:07:09,235 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 22:07:09,266 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:07:09,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:07:09,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:07:09,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:07:09,268 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:07:09,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:07:09,268 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:07:09,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:07:09,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:07:09,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:07:09,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:07:09,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:07:09,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:07:09,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:07:09,272 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:07:09,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:07:09,272 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:07:09,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:07:09,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:07:09,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:07:09,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:07:09,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:07:09,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:07:09,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:07:09,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:07:09,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:07:09,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:07:09,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:07:09,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:07:09,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:07:09,536 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:07:09,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:07:09,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:07:09,555 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:07:09,556 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:07:09,557 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c [2019-11-23 22:07:09,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb901dcb/0f04f9b336fd4dfe8b0e780e286637a5/FLAG6454660f5 [2019-11-23 22:07:10,024 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:07:10,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-1.c [2019-11-23 22:07:10,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb901dcb/0f04f9b336fd4dfe8b0e780e286637a5/FLAG6454660f5 [2019-11-23 22:07:10,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb901dcb/0f04f9b336fd4dfe8b0e780e286637a5 [2019-11-23 22:07:10,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:07:10,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:07:10,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:07:10,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:07:10,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:07:10,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44962956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10, skipping insertion in model container [2019-11-23 22:07:10,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:07:10,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:07:10,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:07:10,672 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:07:10,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:07:10,696 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:07:10,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10 WrapperNode [2019-11-23 22:07:10,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:07:10,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:07:10,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:07:10,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:07:10,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:07:10,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:07:10,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:07:10,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:07:10,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (1/1) ... [2019-11-23 22:07:10,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:07:10,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:07:10,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:07:10,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:07:10,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (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 22:07:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:07:10,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:07:11,012 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:07:11,012 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:07:11,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:07:11 BoogieIcfgContainer [2019-11-23 22:07:11,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:07:11,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:07:11,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:07:11,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:07:11,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:07:10" (1/3) ... [2019-11-23 22:07:11,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1188ad3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:07:11, skipping insertion in model container [2019-11-23 22:07:11,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:07:10" (2/3) ... [2019-11-23 22:07:11,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1188ad3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:07:11, skipping insertion in model container [2019-11-23 22:07:11,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:07:11" (3/3) ... [2019-11-23 22:07:11,022 INFO L109 eAbstractionObserver]: Analyzing ICFG const_1-1.c [2019-11-23 22:07:11,032 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:07:11,038 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:07:11,047 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:07:11,070 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:07:11,070 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:07:11,070 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:07:11,071 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:07:11,071 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:07:11,071 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:07:11,071 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:07:11,071 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:07:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 22:07:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 22:07:11,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:07:11,088 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 22:07:11,089 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:07:11,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:07:11,093 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-11-23 22:07:11,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:07:11,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010548475] [2019-11-23 22:07:11,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:07:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:07:11,289 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 22:07:11,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010548475] [2019-11-23 22:07:11,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:07:11,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:07:11,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868586425] [2019-11-23 22:07:11,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:07:11,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:07:11,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:07:11,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:07:11,328 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 22:07:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:07:11,361 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-23 22:07:11,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:07:11,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-23 22:07:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:07:11,374 INFO L225 Difference]: With dead ends: 17 [2019-11-23 22:07:11,374 INFO L226 Difference]: Without dead ends: 7 [2019-11-23 22:07:11,378 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:07:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-23 22:07:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-23 22:07:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-23 22:07:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-23 22:07:11,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-23 22:07:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:07:11,416 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-23 22:07:11,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:07:11,416 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-23 22:07:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:07:11,417 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:07:11,417 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:07:11,417 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:07:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:07:11,418 INFO L82 PathProgramCache]: Analyzing trace with hash 925620370, now seen corresponding path program 1 times [2019-11-23 22:07:11,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:07:11,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671493416] [2019-11-23 22:07:11,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:07:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:07:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:07:11,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671493416] [2019-11-23 22:07:11,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252573726] [2019-11-23 22:07:11,521 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 22:07:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:07:11,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:07:11,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:07:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:07:11,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:07:11,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-11-23 22:07:11,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615478290] [2019-11-23 22:07:11,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:07:11,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:07:11,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:07:11,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:07:11,612 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-11-23 22:07:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:07:11,633 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-23 22:07:11,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:07:11,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-23 22:07:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:07:11,635 INFO L225 Difference]: With dead ends: 12 [2019-11-23 22:07:11,635 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 22:07:11,637 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:07:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 22:07:11,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 22:07:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 22:07:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-23 22:07:11,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-23 22:07:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:07:11,643 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-23 22:07:11,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:07:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-23 22:07:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:07:11,645 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:07:11,645 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-23 22:07:11,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:07:11,851 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:07:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:07:11,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1368874232, now seen corresponding path program 2 times [2019-11-23 22:07:11,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:07:11,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409778788] [2019-11-23 22:07:11,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:07:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:07:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:07:11,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409778788] [2019-11-23 22:07:11,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568803541] [2019-11-23 22:07:11,980 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 [2019-11-23 22:07:12,017 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:07:12,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:07:12,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-23 22:07:12,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:07:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:07:12,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:07:12,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 22:07:12,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803913173] [2019-11-23 22:07:12,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:07:12,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:07:12,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:07:12,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:07:12,052 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-11-23 22:07:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:07:12,099 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-23 22:07:12,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:07:12,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-23 22:07:12,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:07:12,102 INFO L225 Difference]: With dead ends: 13 [2019-11-23 22:07:12,102 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 22:07:12,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:07:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 22:07:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 22:07:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 22:07:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-23 22:07:12,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-23 22:07:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:07:12,112 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-23 22:07:12,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:07:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-23 22:07:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:07:12,113 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:07:12,113 INFO L410 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2019-11-23 22:07:12,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:07:12,314 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:07:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:07:12,315 INFO L82 PathProgramCache]: Analyzing trace with hash 516237138, now seen corresponding path program 3 times [2019-11-23 22:07:12,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:07:12,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141762260] [2019-11-23 22:07:12,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:07:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:07:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:07:12,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141762260] [2019-11-23 22:07:12,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917587454] [2019-11-23 22:07:12,442 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:07:12,475 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-23 22:07:12,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:07:12,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:07:12,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:07:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 22:07:12,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:07:12,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2019-11-23 22:07:12,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693319558] [2019-11-23 22:07:12,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:07:12,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:07:12,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:07:12,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:07:12,509 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2019-11-23 22:07:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:07:12,533 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-11-23 22:07:12,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:07:12,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-23 22:07:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:07:12,534 INFO L225 Difference]: With dead ends: 9 [2019-11-23 22:07:12,534 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:07:12,535 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:07:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:07:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:07:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:07:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:07:12,536 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-23 22:07:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:07:12,536 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:07:12,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:07:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:07:12,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:07:12,740 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:07:12,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:07:12,787 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:07:12,787 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:07:12,787 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:07:12,788 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:07:12,788 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:07:12,788 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (= ULTIMATE.start_main_~x~0 0) (and (<= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~y~0))) [2019-11-23 22:07:12,788 INFO L444 ceAbstractionStarter]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2019-11-23 22:07:12,789 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:07:12,789 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 1 20) the Hoare annotation is: true [2019-11-23 22:07:12,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:07:12 BoogieIcfgContainer [2019-11-23 22:07:12,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:07:12,806 INFO L168 Benchmark]: Toolchain (without parser) took 2354.36 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 100.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 67.1 MB. Max. memory is 7.1 GB. [2019-11-23 22:07:12,807 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-23 22:07:12,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.10 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 93.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:07:12,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.14 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 93.7 MB in the beginning and 183.8 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:07:12,810 INFO L168 Benchmark]: Boogie Preprocessor took 16.48 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 182.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:07:12,813 INFO L168 Benchmark]: RCFGBuilder took 190.96 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 172.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-23 22:07:12,814 INFO L168 Benchmark]: TraceAbstraction took 1788.59 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 100.7 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2019-11-23 22:07:12,819 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.10 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 93.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 108.14 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 93.7 MB in the beginning and 183.8 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 16.48 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 182.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 190.96 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 172.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1788.59 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 100.7 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: x == 0 || (y <= 0 && 0 <= y) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 1 SDslu, 25 SDs, 0 SdLazy, 28 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 878 SizeOfPredicates, 6 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 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...