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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:11,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:11,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:11,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:11,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:11,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:11,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:11,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:11,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:11,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:11,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:11,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:11,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:11,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:11,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:11,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:11,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:11,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:11,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:11,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:11,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:11,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:11,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:11,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:11,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:11,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:11,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:11,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:11,135 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 [2019-10-13 19:53:11,161 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:11,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:11,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:11,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:11,163 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:11,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:11,164 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:11,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:11,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:11,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:11,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:11,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:11,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:11,165 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:11,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:11,166 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:11,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:11,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:11,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:11,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:11,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:11,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:11,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:11,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:11,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:11,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:11,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:11,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:11,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 19:53:11,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:11,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:11,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:11,474 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:11,474 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:11,475 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i [2019-10-13 19:53:11,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0489f323a/fb57b387833740c08d095c40085da344/FLAG662edbb83 [2019-10-13 19:53:12,011 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:12,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i [2019-10-13 19:53:12,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0489f323a/fb57b387833740c08d095c40085da344/FLAG662edbb83 [2019-10-13 19:53:12,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0489f323a/fb57b387833740c08d095c40085da344 [2019-10-13 19:53:12,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:12,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:12,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:12,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:12,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:12,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db268e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12, skipping insertion in model container [2019-10-13 19:53:12,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:12,413 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:12,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:12,659 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:12,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:12,838 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:12,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12 WrapperNode [2019-10-13 19:53:12,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:12,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:12,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:12,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:12,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:12,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:12,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:12,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:12,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (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 [2019-10-13 19:53:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:12,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:12,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:12,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:12,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:12,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:12,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:13,394 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:13,395 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-13 19:53:13,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:13 BoogieIcfgContainer [2019-10-13 19:53:13,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:13,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:13,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:13,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:13,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:12" (1/3) ... [2019-10-13 19:53:13,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c945ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:13, skipping insertion in model container [2019-10-13 19:53:13,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (2/3) ... [2019-10-13 19:53:13,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c945ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:13, skipping insertion in model container [2019-10-13 19:53:13,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:13" (3/3) ... [2019-10-13 19:53:13,403 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-1.i [2019-10-13 19:53:13,411 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:13,418 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:13,427 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:13,453 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:13,453 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:13,453 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:13,454 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:13,454 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:13,454 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:13,454 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:13,455 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-13 19:53:13,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 19:53:13,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:13,482 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:13,484 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:13,489 INFO L82 PathProgramCache]: Analyzing trace with hash 772526198, now seen corresponding path program 1 times [2019-10-13 19:53:13,499 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:13,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015889135] [2019-10-13 19:53:13,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:13,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:13,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:13,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015889135] [2019-10-13 19:53:13,653 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:13,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:13,656 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968548348] [2019-10-13 19:53:13,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:13,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:13,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:13,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:13,685 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-10-13 19:53:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:13,720 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2019-10-13 19:53:13,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:13,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-13 19:53:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:13,730 INFO L225 Difference]: With dead ends: 76 [2019-10-13 19:53:13,730 INFO L226 Difference]: Without dead ends: 37 [2019-10-13 19:53:13,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:13,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-13 19:53:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-13 19:53:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-13 19:53:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-10-13 19:53:13,775 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-10-13 19:53:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:13,775 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-10-13 19:53:13,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-10-13 19:53:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 19:53:13,777 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:13,777 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:13,778 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:13,778 INFO L82 PathProgramCache]: Analyzing trace with hash 514335338, now seen corresponding path program 1 times [2019-10-13 19:53:13,779 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:13,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848018195] [2019-10-13 19:53:13,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:13,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:13,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:13,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848018195] [2019-10-13 19:53:13,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:13,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:13,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055905479] [2019-10-13 19:53:13,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:13,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:13,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:13,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:13,866 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 3 states. [2019-10-13 19:53:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:13,896 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-10-13 19:53:13,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:13,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 19:53:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:13,898 INFO L225 Difference]: With dead ends: 68 [2019-10-13 19:53:13,898 INFO L226 Difference]: Without dead ends: 39 [2019-10-13 19:53:13,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:13,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-13 19:53:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2019-10-13 19:53:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-13 19:53:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-10-13 19:53:13,908 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2019-10-13 19:53:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:13,909 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-10-13 19:53:13,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:13,909 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-10-13 19:53:13,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-13 19:53:13,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:13,910 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:13,911 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:13,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1148318088, now seen corresponding path program 1 times [2019-10-13 19:53:13,912 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:13,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033406753] [2019-10-13 19:53:13,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:13,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:13,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:13,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033406753] [2019-10-13 19:53:13,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:13,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:13,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020841078] [2019-10-13 19:53:13,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:13,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:13,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:13,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:13,983 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 3 states. [2019-10-13 19:53:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:14,114 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-10-13 19:53:14,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:14,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-13 19:53:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:14,116 INFO L225 Difference]: With dead ends: 76 [2019-10-13 19:53:14,116 INFO L226 Difference]: Without dead ends: 50 [2019-10-13 19:53:14,116 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:14,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-13 19:53:14,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2019-10-13 19:53:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-13 19:53:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-10-13 19:53:14,128 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 27 [2019-10-13 19:53:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:14,128 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-10-13 19:53:14,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-10-13 19:53:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-13 19:53:14,130 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:14,130 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:14,130 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:14,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:14,131 INFO L82 PathProgramCache]: Analyzing trace with hash 342802812, now seen corresponding path program 1 times [2019-10-13 19:53:14,131 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:14,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409643515] [2019-10-13 19:53:14,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:53:14,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409643515] [2019-10-13 19:53:14,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112257133] [2019-10-13 19:53:14,226 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 [2019-10-13 19:53:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:14,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:53:14,363 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:53:14,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [341389062] [2019-10-13 19:53:14,428 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 40 [2019-10-13 19:53:14,473 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:14,474 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:14,571 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:14,576 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 46 variables. [2019-10-13 19:53:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:14,582 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:14,624 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:14,625 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:14,627 INFO L553 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2019-10-13 19:53:14,627 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:14,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:14,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-13 19:53:14,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073713078] [2019-10-13 19:53:14,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:14,630 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:14,630 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:14,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:14,631 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 2 states. [2019-10-13 19:53:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:14,634 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2019-10-13 19:53:14,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:14,634 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-10-13 19:53:14,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:14,635 INFO L225 Difference]: With dead ends: 44 [2019-10-13 19:53:14,635 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:14,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:14,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-13 19:53:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:14,637 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:14,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:14,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:14,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:14,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:14,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:14,885 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:14,886 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:14,886 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:14,886 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:14,886 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:14,886 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:14,886 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:14,887 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2019-10-13 19:53:14,887 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 41) no Hoare annotation was computed. [2019-10-13 19:53:14,887 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 29) the Hoare annotation is: false [2019-10-13 19:53:14,887 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 27 29) no Hoare annotation was computed. [2019-10-13 19:53:14,887 INFO L443 ceAbstractionStarter]: For program point L37-2(lines 37 39) no Hoare annotation was computed. [2019-10-13 19:53:14,887 INFO L439 ceAbstractionStarter]: At program point L37-3(lines 37 39) the Hoare annotation is: false [2019-10-13 19:53:14,887 INFO L443 ceAbstractionStarter]: For program point L37-4(lines 37 39) no Hoare annotation was computed. [2019-10-13 19:53:14,888 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-10-13 19:53:14,888 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: false [2019-10-13 19:53:14,888 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2019-10-13 19:53:14,888 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 41) no Hoare annotation was computed. [2019-10-13 19:53:14,888 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 16) no Hoare annotation was computed. [2019-10-13 19:53:14,888 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 16) the Hoare annotation is: false [2019-10-13 19:53:14,888 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 16) no Hoare annotation was computed. [2019-10-13 19:53:14,888 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: false [2019-10-13 19:53:14,888 INFO L443 ceAbstractionStarter]: For program point L38-1(line 38) no Hoare annotation was computed. [2019-10-13 19:53:14,889 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 41) the Hoare annotation is: true [2019-10-13 19:53:14,889 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 32) no Hoare annotation was computed. [2019-10-13 19:53:14,889 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 32) the Hoare annotation is: false [2019-10-13 19:53:14,889 INFO L443 ceAbstractionStarter]: For program point L30-4(lines 30 32) no Hoare annotation was computed. [2019-10-13 19:53:14,889 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2019-10-13 19:53:14,889 INFO L439 ceAbstractionStarter]: At program point L24-3(lines 24 26) the Hoare annotation is: false [2019-10-13 19:53:14,890 INFO L443 ceAbstractionStarter]: For program point L24-4(lines 24 26) no Hoare annotation was computed. [2019-10-13 19:53:14,890 INFO L443 ceAbstractionStarter]: For program point L33-2(lines 33 35) no Hoare annotation was computed. [2019-10-13 19:53:14,890 INFO L439 ceAbstractionStarter]: At program point L33-3(lines 33 35) the Hoare annotation is: false [2019-10-13 19:53:14,890 INFO L443 ceAbstractionStarter]: For program point L33-4(lines 33 35) no Hoare annotation was computed. [2019-10-13 19:53:14,890 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2019-10-13 19:53:14,890 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 20) the Hoare annotation is: false [2019-10-13 19:53:14,890 INFO L443 ceAbstractionStarter]: For program point L18-4(lines 18 20) no Hoare annotation was computed. [2019-10-13 19:53:14,891 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:14,891 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:14,891 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:14,891 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:14,891 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:14,892 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:14,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:14 BoogieIcfgContainer [2019-10-13 19:53:14,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:14,912 INFO L168 Benchmark]: Toolchain (without parser) took 2532.18 ms. Allocated memory was 143.7 MB in the beginning and 231.7 MB in the end (delta: 88.1 MB). Free memory was 100.2 MB in the beginning and 186.3 MB in the end (delta: -86.2 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:14,913 INFO L168 Benchmark]: CDTParser took 1.25 ms. Allocated memory is still 143.7 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:14,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.58 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 99.9 MB in the beginning and 180.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:14,915 INFO L168 Benchmark]: Boogie Preprocessor took 69.41 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 178.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:14,916 INFO L168 Benchmark]: RCFGBuilder took 487.57 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 157.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:14,917 INFO L168 Benchmark]: TraceAbstraction took 1510.19 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 157.4 MB in the beginning and 186.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 992.2 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:14,921 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.25 ms. Allocated memory is still 143.7 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 460.58 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 99.9 MB in the beginning and 180.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.41 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 178.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 487.57 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 157.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1510.19 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 157.4 MB in the beginning and 186.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 992.2 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 7 SDslu, 60 SDs, 0 SdLazy, 35 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, 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, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 14 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 6944 SizeOfPredicates, 1 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 19/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 155, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9013157894736842, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0789473684210527, AVG_WEAKENED_CONJUNCTS: 0.15789473684210525, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...