/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-multidimensional/min-2-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:34,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:34,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:34,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:34,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:34,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:34,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:34,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:34,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:34,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:34,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:34,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:34,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:34,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:34,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:34,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:34,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:34,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:34,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:34,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:34,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:34,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:34,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:34,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:34,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:34,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:34,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:34,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:34,793 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 22:27:34,826 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:34,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:34,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:34,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:34,831 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:34,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:34,832 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:34,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:34,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:34,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:34,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:34,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:34,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:34,835 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:34,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:34,836 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:34,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:34,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:34,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:34,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:34,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:34,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:34,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:34,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:34,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:34,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:34,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:34,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:34,838 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 22:27:35,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:35,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:35,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:35,189 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:35,189 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:35,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/min-2-u.c [2019-11-06 22:27:35,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d93b6ba0/65b9710d9f954280ade44e84a8e0834a/FLAG2944c7e5e [2019-11-06 22:27:35,719 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:35,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/min-2-u.c [2019-11-06 22:27:35,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d93b6ba0/65b9710d9f954280ade44e84a8e0834a/FLAG2944c7e5e [2019-11-06 22:27:36,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d93b6ba0/65b9710d9f954280ade44e84a8e0834a [2019-11-06 22:27:36,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:36,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:36,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:36,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:36,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:36,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2161d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36, skipping insertion in model container [2019-11-06 22:27:36,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,123 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:36,145 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:36,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:36,375 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:36,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:36,423 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:36,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36 WrapperNode [2019-11-06 22:27:36,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:36,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:36,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:36,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:36,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (1/1) ... [2019-11-06 22:27:36,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:36,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:36,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:36,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:36,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (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 22:27:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:36,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:36,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:36,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:36,946 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:36,946 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-06 22:27:36,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:36 BoogieIcfgContainer [2019-11-06 22:27:36,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:36,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:36,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:36,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:36,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:36" (1/3) ... [2019-11-06 22:27:36,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294d71b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:36, skipping insertion in model container [2019-11-06 22:27:36,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:36" (2/3) ... [2019-11-06 22:27:36,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294d71b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:36, skipping insertion in model container [2019-11-06 22:27:36,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:36" (3/3) ... [2019-11-06 22:27:36,956 INFO L109 eAbstractionObserver]: Analyzing ICFG min-2-u.c [2019-11-06 22:27:36,965 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:36,973 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:36,985 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:37,010 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:37,010 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:37,011 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:37,011 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:37,011 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:37,011 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:37,011 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:37,012 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-06 22:27:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:27:37,033 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:37,034 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:37,036 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:37,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:37,041 INFO L82 PathProgramCache]: Analyzing trace with hash 659715076, now seen corresponding path program 1 times [2019-11-06 22:27:37,049 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:37,049 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890770855] [2019-11-06 22:27:37,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:37,129 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 22:27:37,130 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312794585] [2019-11-06 22:27:37,130 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 22:27:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:37,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:27:37,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:37,258 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 22:27:37,259 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:37,281 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 22:27:37,282 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890770855] [2019-11-06 22:27:37,282 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 22:27:37,282 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312794585] [2019-11-06 22:27:37,283 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:37,284 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-06 22:27:37,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555021089] [2019-11-06 22:27:37,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:27:37,292 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:37,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:37,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:37,311 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2019-11-06 22:27:37,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:37,412 INFO L93 Difference]: Finished difference Result 62 states and 95 transitions. [2019-11-06 22:27:37,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:27:37,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-06 22:27:37,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:37,423 INFO L225 Difference]: With dead ends: 62 [2019-11-06 22:27:37,423 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 22:27:37,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:27:37,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 22:27:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-06 22:27:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 22:27:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-11-06 22:27:37,470 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 16 [2019-11-06 22:27:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:37,470 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-06 22:27:37,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:27:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-11-06 22:27:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 22:27:37,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:37,472 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:37,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:37,676 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:37,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:37,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1178816700, now seen corresponding path program 1 times [2019-11-06 22:27:37,679 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:37,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335281775] [2019-11-06 22:27:37,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:37,690 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 22:27:37,691 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99456156] [2019-11-06 22:27:37,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:37,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:27:37,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:27:37,781 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:27:37,808 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335281775] [2019-11-06 22:27:37,808 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 22:27:37,808 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99456156] [2019-11-06 22:27:37,809 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:37,809 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-06 22:27:37,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119167893] [2019-11-06 22:27:37,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:27:37,811 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:37,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:27:37,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:27:37,812 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 6 states. [2019-11-06 22:27:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:37,940 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2019-11-06 22:27:37,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:27:37,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-06 22:27:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:37,944 INFO L225 Difference]: With dead ends: 69 [2019-11-06 22:27:37,945 INFO L226 Difference]: Without dead ends: 46 [2019-11-06 22:27:37,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:27:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-06 22:27:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2019-11-06 22:27:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 22:27:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2019-11-06 22:27:37,960 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 22 [2019-11-06 22:27:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:37,960 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2019-11-06 22:27:37,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:27:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2019-11-06 22:27:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-06 22:27:37,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:37,962 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:38,165 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:38,166 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:38,167 INFO L82 PathProgramCache]: Analyzing trace with hash -438775100, now seen corresponding path program 1 times [2019-11-06 22:27:38,167 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:38,167 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450941778] [2019-11-06 22:27:38,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:38,182 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 22:27:38,183 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798900718] [2019-11-06 22:27:38,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:38,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 22:27:38,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 22:27:38,296 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 22:27:38,386 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450941778] [2019-11-06 22:27:38,386 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 22:27:38,386 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798900718] [2019-11-06 22:27:38,386 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [651028735] [2019-11-06 22:27:38,393 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 27 [2019-11-06 22:27:38,431 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:38,431 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:38,498 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:38,500 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 0. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 22 variables. [2019-11-06 22:27:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:38,505 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:38,541 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:27:38,541 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:38,543 INFO L553 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-11-06 22:27:38,543 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:38,544 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:27:38,544 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 10 [2019-11-06 22:27:38,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502988684] [2019-11-06 22:27:38,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:38,545 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:38,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:38,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:27:38,546 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 2 states. [2019-11-06 22:27:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:38,550 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-06 22:27:38,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:38,551 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-11-06 22:27:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:38,551 INFO L225 Difference]: With dead ends: 43 [2019-11-06 22:27:38,551 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:27:38,552 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:27:38,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:27:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:27:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:27:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:27:38,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-11-06 22:27:38,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:38,553 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:27:38,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:27:38,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:27:38,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:38,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:27:38,789 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:38,790 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:38,790 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:38,790 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:38,790 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:27:38,790 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:38,791 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:38,791 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 62) no Hoare annotation was computed. [2019-11-06 22:27:38,792 INFO L439 ceAbstractionStarter]: At program point L56(line 56) the Hoare annotation is: false [2019-11-06 22:27:38,792 INFO L443 ceAbstractionStarter]: For program point L56-1(line 56) no Hoare annotation was computed. [2019-11-06 22:27:38,792 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 30) the Hoare annotation is: false [2019-11-06 22:27:38,792 INFO L443 ceAbstractionStarter]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2019-11-06 22:27:38,792 INFO L439 ceAbstractionStarter]: At program point L52-2(lines 52 60) the Hoare annotation is: false [2019-11-06 22:27:38,793 INFO L443 ceAbstractionStarter]: For program point L52-3(lines 52 60) no Hoare annotation was computed. [2019-11-06 22:27:38,793 INFO L439 ceAbstractionStarter]: At program point L36-2(lines 36 45) the Hoare annotation is: false [2019-11-06 22:27:38,793 INFO L443 ceAbstractionStarter]: For program point L36-3(lines 36 45) no Hoare annotation was computed. [2019-11-06 22:27:38,793 INFO L439 ceAbstractionStarter]: At program point L25-2(lines 25 28) the Hoare annotation is: false [2019-11-06 22:27:38,793 INFO L443 ceAbstractionStarter]: For program point L25-3(lines 25 28) no Hoare annotation was computed. [2019-11-06 22:27:38,793 INFO L439 ceAbstractionStarter]: At program point L54-2(lines 54 58) the Hoare annotation is: false [2019-11-06 22:27:38,793 INFO L443 ceAbstractionStarter]: For program point L54-3(lines 54 58) no Hoare annotation was computed. [2019-11-06 22:27:38,794 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 62) no Hoare annotation was computed. [2019-11-06 22:27:38,794 INFO L439 ceAbstractionStarter]: At program point L38-2(lines 38 43) the Hoare annotation is: false [2019-11-06 22:27:38,795 INFO L443 ceAbstractionStarter]: For program point L38-3(lines 38 43) no Hoare annotation was computed. [2019-11-06 22:27:38,795 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 62) the Hoare annotation is: true [2019-11-06 22:27:38,795 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 41) no Hoare annotation was computed. [2019-11-06 22:27:38,795 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 41) no Hoare annotation was computed. [2019-11-06 22:27:38,795 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 22:27:38,795 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 22:27:38,796 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 22:27:38,796 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 22:27:38,796 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 22:27:38,796 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 22:27:38,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:27:38 BoogieIcfgContainer [2019-11-06 22:27:38,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:27:38,813 INFO L168 Benchmark]: Toolchain (without parser) took 2706.84 ms. Allocated memory was 135.8 MB in the beginning and 228.1 MB in the end (delta: 92.3 MB). Free memory was 100.3 MB in the beginning and 177.8 MB in the end (delta: -77.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:38,816 INFO L168 Benchmark]: CDTParser took 1.25 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:27:38,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.99 ms. Allocated memory is still 135.8 MB. Free memory was 100.1 MB in the beginning and 89.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:38,820 INFO L168 Benchmark]: Boogie Preprocessor took 122.76 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 89.7 MB in the beginning and 177.2 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:38,826 INFO L168 Benchmark]: RCFGBuilder took 400.09 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 161.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:38,828 INFO L168 Benchmark]: TraceAbstraction took 1860.33 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 160.3 MB in the beginning and 177.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:38,840 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.25 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.99 ms. Allocated memory is still 135.8 MB. Free memory was 100.1 MB in the beginning and 89.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.76 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 89.7 MB in the beginning and 177.2 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 400.09 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 161.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1860.33 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 160.3 MB in the beginning and 177.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 50 SDslu, 60 SDs, 0 SdLazy, 45 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 15 PreInvPairs, 15 NumberOfFragments, 12 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 3754 SizeOfPredicates, 6 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 42/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 112, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.93, AVG_VARS_REMOVED_DURING_WEAKENING: 0.84, AVG_WEAKENED_CONJUNCTS: 0.24, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...