/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/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:35:00,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:35:00,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:35:00,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:35:00,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:35:00,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:35:00,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:35:00,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:35:00,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:35:00,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:35:00,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:35:00,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:35:00,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:35:00,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:35:00,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:35:00,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:35:00,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:35:00,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:35:00,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:35:00,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:35:00,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:35:00,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:35:00,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:35:00,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:35:00,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:35:00,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:35:00,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:35:00,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:35:00,603 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 [2019-11-07 00:35:00,624 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:35:00,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:35:00,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:35:00,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:35:00,627 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:35:00,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:35:00,627 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:35:00,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:35:00,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:35:00,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:35:00,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:35:00,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:35:00,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:35:00,630 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:35:00,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:35:00,630 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:35:00,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:35:00,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:35:00,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:35:00,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:35:00,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:35:00,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:35:00,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:35:00,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:35:00,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:35:00,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:35:00,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:35:00,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:35:00,633 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 [2019-11-07 00:35:00,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:35:00,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:35:00,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:35:00,913 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:35:00,913 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:35:00,914 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2019-11-07 00:35:00,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7470315e3/9daf577e074a4d9ab22f578a80cc2ded/FLAG9e59ef3bb [2019-11-07 00:35:01,435 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:35:01,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2019-11-07 00:35:01,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7470315e3/9daf577e074a4d9ab22f578a80cc2ded/FLAG9e59ef3bb [2019-11-07 00:35:01,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7470315e3/9daf577e074a4d9ab22f578a80cc2ded [2019-11-07 00:35:01,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:35:01,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:35:01,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:01,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:35:01,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:35:01,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:01" (1/1) ... [2019-11-07 00:35:01,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137b7619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:01, skipping insertion in model container [2019-11-07 00:35:01,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:35:01" (1/1) ... [2019-11-07 00:35:01,863 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:35:01,879 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:35:02,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:02,060 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:35:02,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:35:02,090 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:35:02,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02 WrapperNode [2019-11-07 00:35:02,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:35:02,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:35:02,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:35:02,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:35:02,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (1/1) ... [2019-11-07 00:35:02,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (1/1) ... [2019-11-07 00:35:02,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (1/1) ... [2019-11-07 00:35:02,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (1/1) ... [2019-11-07 00:35:02,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (1/1) ... [2019-11-07 00:35:02,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (1/1) ... [2019-11-07 00:35:02,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (1/1) ... [2019-11-07 00:35:02,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:35:02,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:35:02,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:35:02,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:35:02,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (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 [2019-11-07 00:35:02,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:35:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:35:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:35:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:35:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:35:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:35:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:35:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:35:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:35:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:35:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:35:02,460 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:35:02,460 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:35:02,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:02 BoogieIcfgContainer [2019-11-07 00:35:02,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:35:02,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:35:02,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:35:02,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:35:02,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:35:01" (1/3) ... [2019-11-07 00:35:02,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cb5848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:02, skipping insertion in model container [2019-11-07 00:35:02,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:35:02" (2/3) ... [2019-11-07 00:35:02,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cb5848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:35:02, skipping insertion in model container [2019-11-07 00:35:02,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:35:02" (3/3) ... [2019-11-07 00:35:02,487 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2019-11-07 00:35:02,514 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:35:02,523 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:35:02,537 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:35:02,565 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:35:02,565 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:35:02,565 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:35:02,565 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:35:02,566 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:35:02,566 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:35:02,566 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:35:02,566 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:35:02,587 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-07 00:35:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 00:35:02,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:02,596 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:02,598 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:02,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1912775084, now seen corresponding path program 1 times [2019-11-07 00:35:02,614 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:02,614 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610378646] [2019-11-07 00:35:02,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:02,718 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610378646] [2019-11-07 00:35:02,719 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:02,719 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:35:02,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256504361] [2019-11-07 00:35:02,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:35:02,726 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:02,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:35:02,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:35:02,740 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-07 00:35:02,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:02,764 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-07 00:35:02,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:35:02,765 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-07 00:35:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:02,774 INFO L225 Difference]: With dead ends: 33 [2019-11-07 00:35:02,775 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 00:35:02,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:35:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 00:35:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 00:35:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 00:35:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-07 00:35:02,819 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2019-11-07 00:35:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:02,820 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-07 00:35:02,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:35:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-07 00:35:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 00:35:02,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:02,821 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:02,822 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:02,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2027291688, now seen corresponding path program 1 times [2019-11-07 00:35:02,823 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:02,823 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583146078] [2019-11-07 00:35:02,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:03,240 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2019-11-07 00:35:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:03,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583146078] [2019-11-07 00:35:03,374 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:35:03,374 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:35:03,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508008469] [2019-11-07 00:35:03,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:35:03,379 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:03,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:35:03,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:35:03,380 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2019-11-07 00:35:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:03,554 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-07 00:35:03,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:35:03,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-07 00:35:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:03,557 INFO L225 Difference]: With dead ends: 20 [2019-11-07 00:35:03,558 INFO L226 Difference]: Without dead ends: 14 [2019-11-07 00:35:03,559 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:35:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-07 00:35:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-07 00:35:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-07 00:35:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-07 00:35:03,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-11-07 00:35:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:03,571 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-07 00:35:03,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:35:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-07 00:35:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 00:35:03,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:03,572 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:03,572 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:03,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:03,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1190399537, now seen corresponding path program 1 times [2019-11-07 00:35:03,573 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:03,574 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494811192] [2019-11-07 00:35:03,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:03,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:03,799 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494811192] [2019-11-07 00:35:03,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185256353] [2019-11-07 00:35:03,801 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 [2019-11-07 00:35:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:03,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-07 00:35:03,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:03,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:35:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:03,976 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:04,094 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1091705495] [2019-11-07 00:35:04,104 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-11-07 00:35:04,150 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:35:04,150 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:35:04,301 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 00:35:04,305 INFO L272 AbstractInterpreter]: Visited 13 different actions 41 times. Merged at 3 different actions 12 times. Widened at 1 different actions 2 times. Performed 116 root evaluator evaluations with a maximum evaluation depth of 5. Performed 116 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2019-11-07 00:35:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:04,310 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:35:04,310 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:35:04,310 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2019-11-07 00:35:04,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389720604] [2019-11-07 00:35:04,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:35:04,311 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:04,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:35:04,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:35:04,312 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2019-11-07 00:35:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:04,573 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-11-07 00:35:04,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 00:35:04,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2019-11-07 00:35:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:04,576 INFO L225 Difference]: With dead ends: 25 [2019-11-07 00:35:04,576 INFO L226 Difference]: Without dead ends: 17 [2019-11-07 00:35:04,577 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:35:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-07 00:35:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-07 00:35:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-07 00:35:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-07 00:35:04,589 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2019-11-07 00:35:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:04,589 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-07 00:35:04,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:35:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-07 00:35:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 00:35:04,590 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:35:04,590 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:35:04,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:04,791 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:35:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:35:04,793 INFO L82 PathProgramCache]: Analyzing trace with hash -353156712, now seen corresponding path program 2 times [2019-11-07 00:35:04,794 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:35:04,795 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501673397] [2019-11-07 00:35:04,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:35:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:35:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:35:05,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501673397] [2019-11-07 00:35:05,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522097617] [2019-11-07 00:35:05,012 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 [2019-11-07 00:35:05,059 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-07 00:35:05,059 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:35:05,060 WARN L254 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-07 00:35:05,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:35:05,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:35:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:05,203 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:35:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:35:05,400 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [606522074] [2019-11-07 00:35:05,400 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-11-07 00:35:05,401 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-11-07 00:35:05,401 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:35:05,401 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 22 [2019-11-07 00:35:05,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281043529] [2019-11-07 00:35:05,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-07 00:35:05,402 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:35:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-07 00:35:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:35:05,403 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 22 states. [2019-11-07 00:35:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:35:05,602 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-11-07 00:35:05,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:35:05,602 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 16 [2019-11-07 00:35:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:35:05,603 INFO L225 Difference]: With dead ends: 20 [2019-11-07 00:35:05,603 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:35:05,605 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:35:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:35:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:35:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:35:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:35:05,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-07 00:35:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:35:05,606 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:35:05,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-07 00:35:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:35:05,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:35:05,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:35:05,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:35:05,928 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:35:05,928 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:35:05,928 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:35:05,928 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:35:05,928 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:35:05,928 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:35:05,929 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2019-11-07 00:35:05,929 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2019-11-07 00:35:05,929 INFO L439 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: (and (or (not (= main_~i~0 main_~j~0)) (not (= main_~x~0 1))) (<= 0 main_~y~0) (<= main_~y~0 0)) [2019-11-07 00:35:05,929 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2019-11-07 00:35:05,929 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2019-11-07 00:35:05,929 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-07 00:35:05,930 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 10 25) no Hoare annotation was computed. [2019-11-07 00:35:05,930 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2019-11-07 00:35:05,930 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 00:35:05,930 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 00:35:05,930 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 00:35:05,930 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 00:35:05,930 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 00:35:05,931 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 00:35:05,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:35:05 BoogieIcfgContainer [2019-11-07 00:35:05,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:35:05,947 INFO L168 Benchmark]: Toolchain (without parser) took 4099.74 ms. Allocated memory was 143.1 MB in the beginning and 250.6 MB in the end (delta: 107.5 MB). Free memory was 99.9 MB in the beginning and 165.9 MB in the end (delta: -66.1 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:05,948 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory is still 117.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 00:35:05,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.93 ms. Allocated memory is still 143.1 MB. Free memory was 99.9 MB in the beginning and 90.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:05,950 INFO L168 Benchmark]: Boogie Preprocessor took 122.62 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 90.5 MB in the beginning and 179.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:05,951 INFO L168 Benchmark]: RCFGBuilder took 248.10 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 166.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:05,952 INFO L168 Benchmark]: TraceAbstraction took 3481.64 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 166.9 MB in the beginning and 165.9 MB in the end (delta: 939.1 kB). Peak memory consumption was 50.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:35:05,956 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 143.1 MB. Free memory is still 117.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.93 ms. Allocated memory is still 143.1 MB. Free memory was 99.9 MB in the beginning and 90.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.62 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 90.5 MB in the beginning and 179.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 248.10 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 166.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3481.64 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 166.9 MB in the beginning and 165.9 MB in the end (delta: 939.1 kB). Peak memory consumption was 50.7 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: 17]: Loop Invariant Derived loop invariant: x + j <= i + y && i + y <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 47 SDtfs, 30 SDslu, 168 SDs, 0 SdLazy, 181 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 36 HoareAnnotationTreeSize, 12 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 232 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 8443 SizeOfPredicates, 14 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/33 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...