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 0.1.24-13a467a-m [2019-10-14 23:52:07,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:07,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:07,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:07,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:07,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:07,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:07,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:07,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:07,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:07,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:07,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:07,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:07,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:07,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:07,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:07,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:07,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:07,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:07,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:07,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:07,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:07,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:07,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:07,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:07,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:07,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:07,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:07,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:07,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:07,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:07,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:07,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:07,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:07,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:07,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:07,694 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 [2019-10-14 23:52:07,730 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:07,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:07,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:07,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:07,732 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:07,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:07,732 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:07,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:07,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:07,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:07,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:07,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:07,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:07,736 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:07,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:07,737 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:07,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:07,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:07,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:07,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:07,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:07,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:07,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:07,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:07,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:07,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:07,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:07,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:07,740 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 [2019-10-14 23:52:08,011 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:08,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:08,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:08,044 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:08,045 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:08,046 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i [2019-10-14 23:52:08,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31ad0f2b/aed8c50ab16e4f66b6abb062b7847fad/FLAGe8049b536 [2019-10-14 23:52:08,617 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:08,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i [2019-10-14 23:52:08,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31ad0f2b/aed8c50ab16e4f66b6abb062b7847fad/FLAGe8049b536 [2019-10-14 23:52:08,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31ad0f2b/aed8c50ab16e4f66b6abb062b7847fad [2019-10-14 23:52:08,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:08,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:08,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:08,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:08,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:08,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:08" (1/1) ... [2019-10-14 23:52:08,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac9320a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:08, skipping insertion in model container [2019-10-14 23:52:08,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:08" (1/1) ... [2019-10-14 23:52:08,963 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:08,985 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:09,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:09,190 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:09,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:09,324 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:09,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09 WrapperNode [2019-10-14 23:52:09,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:09,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:09,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:09,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:09,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:09,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:09,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:09,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:09,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (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 [2019-10-14 23:52:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:09,807 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:09,807 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-14 23:52:09,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:09 BoogieIcfgContainer [2019-10-14 23:52:09,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:09,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:09,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:09,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:09,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:08" (1/3) ... [2019-10-14 23:52:09,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677f8ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:09, skipping insertion in model container [2019-10-14 23:52:09,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (2/3) ... [2019-10-14 23:52:09,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677f8ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:09, skipping insertion in model container [2019-10-14 23:52:09,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:09" (3/3) ... [2019-10-14 23:52:09,818 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-1.i [2019-10-14 23:52:09,825 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:09,833 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:09,844 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:09,867 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:09,867 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:09,868 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:09,868 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:09,868 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:09,868 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:09,868 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:09,868 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-14 23:52:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:52:09,891 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:09,893 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] [2019-10-14 23:52:09,895 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:09,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:09,901 INFO L82 PathProgramCache]: Analyzing trace with hash 772526198, now seen corresponding path program 1 times [2019-10-14 23:52:09,911 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:09,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641133352] [2019-10-14 23:52:09,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:09,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:09,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:10,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641133352] [2019-10-14 23:52:10,064 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:10,064 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:10,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859510470] [2019-10-14 23:52:10,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:10,071 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:10,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:10,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:10,087 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-10-14 23:52:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:10,111 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2019-10-14 23:52:10,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:10,112 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-14 23:52:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:10,120 INFO L225 Difference]: With dead ends: 76 [2019-10-14 23:52:10,120 INFO L226 Difference]: Without dead ends: 37 [2019-10-14 23:52:10,124 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 [2019-10-14 23:52:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-14 23:52:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-14 23:52:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-14 23:52:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-10-14 23:52:10,164 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-10-14 23:52:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:10,164 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-10-14 23:52:10,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-10-14 23:52:10,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:52:10,166 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,166 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] [2019-10-14 23:52:10,167 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,168 INFO L82 PathProgramCache]: Analyzing trace with hash 514335338, now seen corresponding path program 1 times [2019-10-14 23:52:10,168 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390277511] [2019-10-14 23:52:10,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:10,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390277511] [2019-10-14 23:52:10,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:10,256 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:10,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885717865] [2019-10-14 23:52:10,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:10,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:10,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:10,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:10,260 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 3 states. [2019-10-14 23:52:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:10,312 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-10-14 23:52:10,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:10,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-14 23:52:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:10,317 INFO L225 Difference]: With dead ends: 68 [2019-10-14 23:52:10,317 INFO L226 Difference]: Without dead ends: 39 [2019-10-14 23:52:10,320 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 [2019-10-14 23:52:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-14 23:52:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2019-10-14 23:52:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-14 23:52:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-10-14 23:52:10,341 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2019-10-14 23:52:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:10,343 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-10-14 23:52:10,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-10-14 23:52:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:52:10,347 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,348 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] [2019-10-14 23:52:10,349 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1148318088, now seen corresponding path program 1 times [2019-10-14 23:52:10,351 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757492249] [2019-10-14 23:52:10,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:10,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757492249] [2019-10-14 23:52:10,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:10,449 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:10,449 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17857615] [2019-10-14 23:52:10,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:10,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:10,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:10,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:10,455 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 3 states. [2019-10-14 23:52:10,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:10,580 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-10-14 23:52:10,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:10,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-14 23:52:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:10,582 INFO L225 Difference]: With dead ends: 76 [2019-10-14 23:52:10,583 INFO L226 Difference]: Without dead ends: 50 [2019-10-14 23:52:10,585 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 [2019-10-14 23:52:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-14 23:52:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2019-10-14 23:52:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-14 23:52:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-10-14 23:52:10,599 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 27 [2019-10-14 23:52:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:10,600 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-10-14 23:52:10,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-10-14 23:52:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:52:10,604 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,604 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] [2019-10-14 23:52:10,604 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,605 INFO L82 PathProgramCache]: Analyzing trace with hash 342802812, now seen corresponding path program 1 times [2019-10-14 23:52:10,605 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551558342] [2019-10-14 23:52:10,606 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,606 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:52:10,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551558342] [2019-10-14 23:52:10,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214855278] [2019-10-14 23:52:10,745 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 [2019-10-14 23:52:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:10,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:52:10,874 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:52:10,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [365073235] [2019-10-14 23:52:10,929 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 40 [2019-10-14 23:52:10,977 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:10,977 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:11,078 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:11,080 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. [2019-10-14 23:52:11,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:11,084 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:11,133 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:11,133 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:11,135 INFO L553 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2019-10-14 23:52:11,136 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:11,136 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:11,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-14 23:52:11,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142029564] [2019-10-14 23:52:11,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:11,138 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:11,138 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:11,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:11,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:11,139 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 2 states. [2019-10-14 23:52:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:11,142 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2019-10-14 23:52:11,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:11,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-10-14 23:52:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:11,143 INFO L225 Difference]: With dead ends: 44 [2019-10-14 23:52:11,143 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:11,144 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 [2019-10-14 23:52:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:11,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:11,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-14 23:52:11,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:11,145 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:11,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:11,146 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:11,349 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:11,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:11,387 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:11,388 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:11,388 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:11,388 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:11,388 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:11,388 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:11,388 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:11,389 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2019-10-14 23:52:11,389 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 41) no Hoare annotation was computed. [2019-10-14 23:52:11,389 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 29) the Hoare annotation is: false [2019-10-14 23:52:11,389 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 27 29) no Hoare annotation was computed. [2019-10-14 23:52:11,389 INFO L443 ceAbstractionStarter]: For program point L37-2(lines 37 39) no Hoare annotation was computed. [2019-10-14 23:52:11,389 INFO L439 ceAbstractionStarter]: At program point L37-3(lines 37 39) the Hoare annotation is: false [2019-10-14 23:52:11,390 INFO L443 ceAbstractionStarter]: For program point L37-4(lines 37 39) no Hoare annotation was computed. [2019-10-14 23:52:11,390 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-10-14 23:52:11,390 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: false [2019-10-14 23:52:11,390 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2019-10-14 23:52:11,390 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 41) no Hoare annotation was computed. [2019-10-14 23:52:11,390 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 16) no Hoare annotation was computed. [2019-10-14 23:52:11,391 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 16) the Hoare annotation is: false [2019-10-14 23:52:11,391 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 16) no Hoare annotation was computed. [2019-10-14 23:52:11,391 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: false [2019-10-14 23:52:11,391 INFO L443 ceAbstractionStarter]: For program point L38-1(line 38) no Hoare annotation was computed. [2019-10-14 23:52:11,391 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 41) the Hoare annotation is: true [2019-10-14 23:52:11,391 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 32) no Hoare annotation was computed. [2019-10-14 23:52:11,391 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 32) the Hoare annotation is: false [2019-10-14 23:52:11,392 INFO L443 ceAbstractionStarter]: For program point L30-4(lines 30 32) no Hoare annotation was computed. [2019-10-14 23:52:11,392 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2019-10-14 23:52:11,392 INFO L439 ceAbstractionStarter]: At program point L24-3(lines 24 26) the Hoare annotation is: false [2019-10-14 23:52:11,392 INFO L443 ceAbstractionStarter]: For program point L24-4(lines 24 26) no Hoare annotation was computed. [2019-10-14 23:52:11,392 INFO L443 ceAbstractionStarter]: For program point L33-2(lines 33 35) no Hoare annotation was computed. [2019-10-14 23:52:11,392 INFO L439 ceAbstractionStarter]: At program point L33-3(lines 33 35) the Hoare annotation is: false [2019-10-14 23:52:11,393 INFO L443 ceAbstractionStarter]: For program point L33-4(lines 33 35) no Hoare annotation was computed. [2019-10-14 23:52:11,393 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2019-10-14 23:52:11,393 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 20) the Hoare annotation is: false [2019-10-14 23:52:11,393 INFO L443 ceAbstractionStarter]: For program point L18-4(lines 18 20) no Hoare annotation was computed. [2019-10-14 23:52:11,393 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,393 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,393 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:11,394 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,394 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,394 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:11 BoogieIcfgContainer [2019-10-14 23:52:11,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:11,407 INFO L168 Benchmark]: Toolchain (without parser) took 2460.11 ms. Allocated memory was 143.7 MB in the beginning and 235.4 MB in the end (delta: 91.8 MB). Free memory was 102.2 MB in the beginning and 185.2 MB in the end (delta: -82.9 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,408 INFO L168 Benchmark]: CDTParser took 1.94 ms. Allocated memory is still 143.7 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.62 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 102.0 MB in the beginning and 182.2 MB in the end (delta: -80.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,410 INFO L168 Benchmark]: Boogie Preprocessor took 45.16 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,411 INFO L168 Benchmark]: RCFGBuilder took 437.69 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 159.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,412 INFO L168 Benchmark]: TraceAbstraction took 1593.00 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 158.4 MB in the beginning and 185.2 MB in the end (delta: -26.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,416 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.94 ms. Allocated memory is still 143.7 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.62 ms. Allocated memory was 143.7 MB in the beginning and 202.9 MB in the end (delta: 59.2 MB). Free memory was 102.0 MB in the beginning and 182.2 MB in the end (delta: -80.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.16 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.69 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 159.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1593.00 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 158.4 MB in the beginning and 185.2 MB in the end (delta: -26.7 MB). Peak memory consumption was 5.8 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: 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: 1.5s, 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, 0.1s 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...