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/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:05:58,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:05:58,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:05:58,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:05:58,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:05:58,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:05:58,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:05:58,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:05:58,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:05:58,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:05:58,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:05:58,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:05:58,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:05:58,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:05:58,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:05:58,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:05:58,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:05:58,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:05:58,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:05:58,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:05:58,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:05:58,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:05:58,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:05:58,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:05:58,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:05:58,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:05:58,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:05:58,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:05:58,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:05:58,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:05:58,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:05:58,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:05:58,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:05:58,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:05:58,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:05:58,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:05:58,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:05:58,689 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:05:58,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:05:58,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:05:58,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:05:58,691 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:05:58,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:05:58,691 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:05:58,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:05:58,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:05:58,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:05:58,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:05:58,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:05:58,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:05:58,693 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:05:58,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:05:58,693 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:05:58,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:05:58,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:05:58,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:05:58,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:05:58,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:05:58,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:05:58,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:05:58,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:05:58,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:05:58,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:05:58,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:05:58,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:05:58,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:05:58,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:05:58,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:05:58,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:05:58,993 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:05:58,993 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:05:58,994 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-10-13 21:05:59,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab2747ac8/a51e3350c645425db07acdea7eca66da/FLAG432b7ce21 [2019-10-13 21:05:59,496 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:05:59,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-10-13 21:05:59,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab2747ac8/a51e3350c645425db07acdea7eca66da/FLAG432b7ce21 [2019-10-13 21:05:59,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab2747ac8/a51e3350c645425db07acdea7eca66da [2019-10-13 21:05:59,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:05:59,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:05:59,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:59,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:05:59,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:05:59,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:59" (1/1) ... [2019-10-13 21:05:59,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46029d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:59, skipping insertion in model container [2019-10-13 21:05:59,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:59" (1/1) ... [2019-10-13 21:05:59,940 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:05:59,955 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:06:00,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:06:00,110 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:06:00,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:06:00,134 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:06:00,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00 WrapperNode [2019-10-13 21:06:00,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:06:00,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:06:00,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:06:00,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:06:00,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (1/1) ... [2019-10-13 21:06:00,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (1/1) ... [2019-10-13 21:06:00,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (1/1) ... [2019-10-13 21:06:00,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (1/1) ... [2019-10-13 21:06:00,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (1/1) ... [2019-10-13 21:06:00,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (1/1) ... [2019-10-13 21:06:00,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (1/1) ... [2019-10-13 21:06:00,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:06:00,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:06:00,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:06:00,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:06:00,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:06:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:06:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:06:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:06:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:06:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:06:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:06:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:06:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:06:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:06:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:06:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:06:00,470 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:06:00,471 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:06:00,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:06:00 BoogieIcfgContainer [2019-10-13 21:06:00,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:06:00,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:06:00,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:06:00,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:06:00,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:05:59" (1/3) ... [2019-10-13 21:06:00,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e211fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:06:00, skipping insertion in model container [2019-10-13 21:06:00,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:06:00" (2/3) ... [2019-10-13 21:06:00,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e211fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:06:00, skipping insertion in model container [2019-10-13 21:06:00,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:06:00" (3/3) ... [2019-10-13 21:06:00,480 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-10-13 21:06:00,490 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:06:00,498 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:06:00,510 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:06:00,553 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:06:00,553 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:06:00,554 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:06:00,554 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:06:00,554 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:06:00,554 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:06:00,555 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:06:00,555 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:06:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-13 21:06:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:06:00,587 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:00,588 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:00,590 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:00,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:00,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1158151592, now seen corresponding path program 1 times [2019-10-13 21:06:00,607 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:00,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107564086] [2019-10-13 21:06:00,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:00,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:00,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:00,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107564086] [2019-10-13 21:06:00,813 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:06:00,814 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:06:00,814 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138408709] [2019-10-13 21:06:00,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:06:00,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:00,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:06:00,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:06:00,847 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-10-13 21:06:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:00,991 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2019-10-13 21:06:00,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:06:00,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-13 21:06:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:01,003 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:06:01,004 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:06:01,009 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:06:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:06:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 21:06:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:06:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-10-13 21:06:01,061 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2019-10-13 21:06:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:01,061 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-10-13 21:06:01,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:06:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-10-13 21:06:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:06:01,063 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:01,063 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:01,064 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:01,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:01,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1937413030, now seen corresponding path program 1 times [2019-10-13 21:06:01,065 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:01,065 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69153691] [2019-10-13 21:06:01,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:01,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:01,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:06:01,151 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69153691] [2019-10-13 21:06:01,152 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:06:01,152 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:06:01,152 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751120060] [2019-10-13 21:06:01,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:06:01,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:01,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:06:01,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:06:01,155 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2019-10-13 21:06:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:01,233 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-10-13 21:06:01,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:06:01,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-10-13 21:06:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:01,236 INFO L225 Difference]: With dead ends: 31 [2019-10-13 21:06:01,236 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 21:06:01,237 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:06:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 21:06:01,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-10-13 21:06:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 21:06:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-10-13 21:06:01,251 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2019-10-13 21:06:01,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:01,251 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-10-13 21:06:01,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:06:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-10-13 21:06:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 21:06:01,254 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:01,254 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:01,255 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:01,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:01,255 INFO L82 PathProgramCache]: Analyzing trace with hash 441803270, now seen corresponding path program 1 times [2019-10-13 21:06:01,256 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:01,256 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989338948] [2019-10-13 21:06:01,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:01,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:01,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:06:01,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989338948] [2019-10-13 21:06:01,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642914421] [2019-10-13 21:06:01,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:06:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:01,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-13 21:06:01,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:06:01,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:06:01,573 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:06:01,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:01,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:01,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:06:01,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1265667262] [2019-10-13 21:06:01,732 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 30 [2019-10-13 21:06:01,777 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:06:01,778 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:06:02,004 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-13 21:06:02,007 INFO L272 AbstractInterpreter]: Visited 18 different actions 103 times. Merged at 4 different actions 20 times. Widened at 1 different actions 1 times. Performed 120 root evaluator evaluations with a maximum evaluation depth of 7. Performed 120 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2019-10-13 21:06:02,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:02,013 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:06:02,013 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:06:02,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 15 [2019-10-13 21:06:02,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229864943] [2019-10-13 21:06:02,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:06:02,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:02,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:06:02,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:06:02,016 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 15 states. [2019-10-13 21:06:02,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:02,206 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2019-10-13 21:06:02,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:06:02,206 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2019-10-13 21:06:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:02,207 INFO L225 Difference]: With dead ends: 43 [2019-10-13 21:06:02,208 INFO L226 Difference]: Without dead ends: 41 [2019-10-13 21:06:02,209 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:06:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-13 21:06:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-10-13 21:06:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 21:06:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2019-10-13 21:06:02,218 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 29 [2019-10-13 21:06:02,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:02,219 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2019-10-13 21:06:02,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:06:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2019-10-13 21:06:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-13 21:06:02,221 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:06:02,221 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:06:02,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:06:02,427 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:06:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:06:02,427 INFO L82 PathProgramCache]: Analyzing trace with hash 713924710, now seen corresponding path program 2 times [2019-10-13 21:06:02,428 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:06:02,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36380317] [2019-10-13 21:06:02,429 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:02,429 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:06:02,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:06:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:06:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:06:02,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36380317] [2019-10-13 21:06:02,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511986547] [2019-10-13 21:06:02,554 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-10-13 21:06:02,585 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:06:02,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:06:02,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 21:06:02,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:06:02,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:06:02,645 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:06:02,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:02,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:02,688 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:06:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:06:02,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [527017687] [2019-10-13 21:06:02,766 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-13 21:06:02,767 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-13 21:06:02,767 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:06:02,767 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 13 [2019-10-13 21:06:02,767 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69643849] [2019-10-13 21:06:02,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 21:06:02,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:06:02,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 21:06:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:06:02,770 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 13 states. [2019-10-13 21:06:02,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:06:02,880 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2019-10-13 21:06:02,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:06:02,883 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2019-10-13 21:06:02,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:06:02,884 INFO L225 Difference]: With dead ends: 40 [2019-10-13 21:06:02,884 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:06:02,885 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:06:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:06:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:06:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:06:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:06:02,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-10-13 21:06:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:06:02,887 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:06:02,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 21:06:02,888 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:06:02,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:06:03,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:06:03,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:06:03,169 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 21:06:03,170 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:06:03,170 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:06:03,170 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:06:03,170 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:06:03,170 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:06:03,171 INFO L446 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2019-10-13 21:06:03,171 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 31) the Hoare annotation is: true [2019-10-13 21:06:03,171 INFO L443 ceAbstractionStarter]: For program point L28(lines 24 29) no Hoare annotation was computed. [2019-10-13 21:06:03,171 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 1 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0)) [2019-10-13 21:06:03,171 INFO L439 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 1 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0)) [2019-10-13 21:06:03,172 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 31) no Hoare annotation was computed. [2019-10-13 21:06:03,172 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 29) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 1 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2019-10-13 21:06:03,172 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-13 21:06:03,172 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-10-13 21:06:03,172 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 31) no Hoare annotation was computed. [2019-10-13 21:06:03,172 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 21:06:03,173 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 21:06:03,173 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 21:06:03,173 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 21:06:03,173 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 21:06:03,173 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 21:06:03,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:06:03 BoogieIcfgContainer [2019-10-13 21:06:03,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:06:03,197 INFO L168 Benchmark]: Toolchain (without parser) took 3270.30 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 102.1 MB in the beginning and 101.8 MB in the end (delta: 362.2 kB). Peak memory consumption was 96.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:03,202 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:06:03,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.54 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 92.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:03,210 INFO L168 Benchmark]: Boogie Preprocessor took 114.65 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 179.7 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:03,213 INFO L168 Benchmark]: RCFGBuilder took 222.07 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 168.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:03,215 INFO L168 Benchmark]: TraceAbstraction took 2719.27 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 168.1 MB in the beginning and 101.8 MB in the end (delta: 66.3 MB). Peak memory consumption was 99.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:06:03,222 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 209.54 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 92.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.65 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 179.7 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 222.07 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 168.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2719.27 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 168.1 MB in the beginning and 101.8 MB in the end (delta: 66.3 MB). Peak memory consumption was 99.9 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: 24]: Loop Invariant Derived loop invariant: (glob2_pathlim_off <= MAXPATHLEN && 1 <= MAXPATHLEN) && 0 <= glob2_p_off - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 47 SDslu, 222 SDs, 0 SdLazy, 198 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 27 NumberOfFragments, 42 HoareAnnotationTreeSize, 16 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 169 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 18563 SizeOfPredicates, 14 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 208/245 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...