/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:36,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:36,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:36,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:36,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:36,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:36,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:36,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:36,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:36,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:36,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:36,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:36,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:36,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:36,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:36,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:36,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:36,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:36,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:36,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:36,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:36,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:36,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:36,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:36,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:36,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:36,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:36,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:36,780 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 [2019-11-06 22:26:36,794 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:36,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:36,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:36,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:36,795 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:36,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:36,796 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:36,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:36,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:36,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:36,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:36,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:36,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:36,797 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:36,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:36,797 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:36,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:36,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:36,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:36,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:36,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:36,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:36,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:36,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:36,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:36,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:36,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:36,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:36,800 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 [2019-11-06 22:26:37,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:37,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:37,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:37,106 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:37,106 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:37,107 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2019-11-06 22:26:37,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02a06f0e/3b1d8f8c49724df5953b05522c9b5de7/FLAGd71ae33e3 [2019-11-06 22:26:37,586 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:37,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2019-11-06 22:26:37,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02a06f0e/3b1d8f8c49724df5953b05522c9b5de7/FLAGd71ae33e3 [2019-11-06 22:26:38,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02a06f0e/3b1d8f8c49724df5953b05522c9b5de7 [2019-11-06 22:26:38,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:38,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:38,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:38,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:38,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:38,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ea6363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38, skipping insertion in model container [2019-11-06 22:26:38,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,041 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:38,065 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:38,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:38,226 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:38,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:38,274 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:38,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38 WrapperNode [2019-11-06 22:26:38,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:38,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:38,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:38,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:38,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (1/1) ... [2019-11-06 22:26:38,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:38,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:38,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:38,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:38,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (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 [2019-11-06 22:26:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:26:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:38,946 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:38,947 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-06 22:26:38,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:38 BoogieIcfgContainer [2019-11-06 22:26:38,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:38,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:38,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:38,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:38,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:38" (1/3) ... [2019-11-06 22:26:38,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3444ce33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:38, skipping insertion in model container [2019-11-06 22:26:38,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:38" (2/3) ... [2019-11-06 22:26:38,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3444ce33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:38, skipping insertion in model container [2019-11-06 22:26:38,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:38" (3/3) ... [2019-11-06 22:26:38,975 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-2.i [2019-11-06 22:26:38,996 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:39,015 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:39,032 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:39,069 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:39,069 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:39,069 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:39,070 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:39,070 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:39,070 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:39,070 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:39,070 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-06 22:26:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-06 22:26:39,104 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:39,106 INFO L410 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] [2019-11-06 22:26:39,110 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:39,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:39,118 INFO L82 PathProgramCache]: Analyzing trace with hash 772526198, now seen corresponding path program 1 times [2019-11-06 22:26:39,131 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:39,132 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302022348] [2019-11-06 22:26:39,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:39,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302022348] [2019-11-06 22:26:39,347 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:39,348 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:39,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109866532] [2019-11-06 22:26:39,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:39,356 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:39,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:39,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:39,375 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-11-06 22:26:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:39,406 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2019-11-06 22:26:39,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:39,407 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-11-06 22:26:39,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:39,415 INFO L225 Difference]: With dead ends: 76 [2019-11-06 22:26:39,415 INFO L226 Difference]: Without dead ends: 37 [2019-11-06 22:26:39,419 INFO L630 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 [2019-11-06 22:26:39,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-06 22:26:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-06 22:26:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-06 22:26:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-11-06 22:26:39,464 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-11-06 22:26:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:39,465 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-11-06 22:26:39,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:39,465 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-11-06 22:26:39,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-06 22:26:39,467 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:39,467 INFO L410 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] [2019-11-06 22:26:39,467 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash 514335338, now seen corresponding path program 1 times [2019-11-06 22:26:39,468 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:39,468 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737559192] [2019-11-06 22:26:39,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:39,558 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737559192] [2019-11-06 22:26:39,558 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:39,559 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:39,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620859228] [2019-11-06 22:26:39,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:39,561 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:39,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:39,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:39,563 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 3 states. [2019-11-06 22:26:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:39,586 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-11-06 22:26:39,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:39,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-06 22:26:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:39,588 INFO L225 Difference]: With dead ends: 68 [2019-11-06 22:26:39,588 INFO L226 Difference]: Without dead ends: 39 [2019-11-06 22:26:39,590 INFO L630 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 [2019-11-06 22:26:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-06 22:26:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2019-11-06 22:26:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-06 22:26:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-11-06 22:26:39,598 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2019-11-06 22:26:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:39,598 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-11-06 22:26:39,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-11-06 22:26:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-06 22:26:39,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:39,600 INFO L410 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] [2019-11-06 22:26:39,600 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:39,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:39,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1148318088, now seen corresponding path program 1 times [2019-11-06 22:26:39,601 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:39,601 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234222165] [2019-11-06 22:26:39,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:39,674 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234222165] [2019-11-06 22:26:39,674 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:39,675 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:39,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562609437] [2019-11-06 22:26:39,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:39,676 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:39,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:39,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:39,677 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 3 states. [2019-11-06 22:26:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:39,776 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-11-06 22:26:39,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:39,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-11-06 22:26:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:39,779 INFO L225 Difference]: With dead ends: 76 [2019-11-06 22:26:39,780 INFO L226 Difference]: Without dead ends: 50 [2019-11-06 22:26:39,780 INFO L630 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 [2019-11-06 22:26:39,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-06 22:26:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2019-11-06 22:26:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 22:26:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-11-06 22:26:39,797 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 27 [2019-11-06 22:26:39,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:39,798 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-11-06 22:26:39,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:39,798 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-11-06 22:26:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-06 22:26:39,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:39,801 INFO L410 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] [2019-11-06 22:26:39,801 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:39,803 INFO L82 PathProgramCache]: Analyzing trace with hash 342802812, now seen corresponding path program 1 times [2019-11-06 22:26:39,803 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:39,803 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958203009] [2019-11-06 22:26:39,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:26:39,941 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958203009] [2019-11-06 22:26:39,941 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646554074] [2019-11-06 22:26:39,942 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 [2019-11-06 22:26:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:40,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:40,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:26:40,086 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 22:26:40,123 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [940988881] [2019-11-06 22:26:40,129 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 40 [2019-11-06 22:26:40,182 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:40,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:40,238 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:40,240 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 45 variables. [2019-11-06 22:26:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:40,244 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:40,285 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:40,286 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:40,288 INFO L553 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2019-11-06 22:26:40,288 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:40,289 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:40,289 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:26:40,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408719525] [2019-11-06 22:26:40,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:40,290 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:40,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:40,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:40,291 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 2 states. [2019-11-06 22:26:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:40,294 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2019-11-06 22:26:40,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:40,294 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-11-06 22:26:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:40,295 INFO L225 Difference]: With dead ends: 44 [2019-11-06 22:26:40,295 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:40,296 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:40,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-11-06 22:26:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:40,297 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:40,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:40,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:40,501 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:40,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:40,551 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:40,552 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:40,552 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:40,552 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:40,552 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:40,553 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:40,553 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:40,553 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 40) no Hoare annotation was computed. [2019-11-06 22:26:40,553 INFO L443 ceAbstractionStarter]: For program point L36-2(lines 36 38) no Hoare annotation was computed. [2019-11-06 22:26:40,553 INFO L439 ceAbstractionStarter]: At program point L36-3(lines 36 38) the Hoare annotation is: false [2019-11-06 22:26:40,553 INFO L443 ceAbstractionStarter]: For program point L36-4(lines 36 38) no Hoare annotation was computed. [2019-11-06 22:26:40,554 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2019-11-06 22:26:40,554 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 22) the Hoare annotation is: false [2019-11-06 22:26:40,554 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2019-11-06 22:26:40,554 INFO L439 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: false [2019-11-06 22:26:40,554 INFO L443 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-11-06 22:26:40,554 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2019-11-06 22:26:40,554 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: false [2019-11-06 22:26:40,555 INFO L443 ceAbstractionStarter]: For program point L29-4(lines 29 31) no Hoare annotation was computed. [2019-11-06 22:26:40,555 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 40) no Hoare annotation was computed. [2019-11-06 22:26:40,555 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-11-06 22:26:40,555 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: false [2019-11-06 22:26:40,555 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2019-11-06 22:26:40,555 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 40) the Hoare annotation is: true [2019-11-06 22:26:40,556 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 25) no Hoare annotation was computed. [2019-11-06 22:26:40,556 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 25) the Hoare annotation is: false [2019-11-06 22:26:40,556 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 25) no Hoare annotation was computed. [2019-11-06 22:26:40,556 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-11-06 22:26:40,556 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false [2019-11-06 22:26:40,556 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed. [2019-11-06 22:26:40,556 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 19) no Hoare annotation was computed. [2019-11-06 22:26:40,557 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 19) the Hoare annotation is: false [2019-11-06 22:26:40,557 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2019-11-06 22:26:40,557 INFO L443 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2019-11-06 22:26:40,557 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: false [2019-11-06 22:26:40,557 INFO L443 ceAbstractionStarter]: For program point L26-4(lines 26 28) no Hoare annotation was computed. [2019-11-06 22:26:40,557 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:40,557 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:40,558 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:40,558 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:40,558 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:40,558 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:40,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:40 BoogieIcfgContainer [2019-11-06 22:26:40,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:40,570 INFO L168 Benchmark]: Toolchain (without parser) took 2544.64 ms. Allocated memory was 144.2 MB in the beginning and 232.3 MB in the end (delta: 88.1 MB). Free memory was 101.8 MB in the beginning and 185.3 MB in the end (delta: -83.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:40,571 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:40,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.73 ms. Allocated memory is still 144.2 MB. Free memory was 101.6 MB in the beginning and 91.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:40,573 INFO L168 Benchmark]: Boogie Preprocessor took 131.62 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.1 MB in the beginning and 178.7 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:40,574 INFO L168 Benchmark]: RCFGBuilder took 541.50 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 157.7 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:40,575 INFO L168 Benchmark]: TraceAbstraction took 1616.91 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 157.7 MB in the beginning and 185.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:40,580 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.73 ms. Allocated memory is still 144.2 MB. Free memory was 101.6 MB in the beginning and 91.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.62 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.1 MB in the beginning and 178.7 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 541.50 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 157.7 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1616.91 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 157.7 MB in the beginning and 185.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 3.3 MB. 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: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: 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, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 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, 138 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 19/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 116, 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...