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/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:05:00,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:05:00,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:05:00,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:05:00,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:05:00,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:05:00,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:05:00,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:05:00,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:05:00,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:05:00,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:05:00,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:05:00,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:05:00,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:05:00,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:05:00,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:05:00,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:05:00,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:05:00,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:05:00,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:05:00,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:05:00,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:05:00,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:05:00,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:05:00,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:05:00,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:05:00,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:05:00,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:05:00,400 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 [2019-10-15 01:05:00,414 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:05:00,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:05:00,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:05:00,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:05:00,416 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:05:00,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:05:00,417 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:05:00,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:05:00,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:05:00,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:05:00,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:05:00,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:05:00,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:05:00,418 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:05:00,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:05:00,419 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:05:00,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:05:00,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:05:00,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:05:00,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:05:00,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:05:00,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:05:00,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:05:00,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:05:00,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:05:00,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:05:00,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:05:00,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:05:00,421 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 [2019-10-15 01:05:00,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:05:00,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:05:00,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:05:00,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:05:00,716 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:05:00,717 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2019-10-15 01:05:00,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88517f0b/97a1d39bd5f94fcd83029f71b0339592/FLAGe4872abb1 [2019-10-15 01:05:01,261 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:05:01,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2019-10-15 01:05:01,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88517f0b/97a1d39bd5f94fcd83029f71b0339592/FLAGe4872abb1 [2019-10-15 01:05:01,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a88517f0b/97a1d39bd5f94fcd83029f71b0339592 [2019-10-15 01:05:01,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:05:01,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:05:01,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:01,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:05:01,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:05:01,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:01,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139096f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01, skipping insertion in model container [2019-10-15 01:05:01,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:01,608 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:05:01,628 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:05:01,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:01,820 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:05:01,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:01,884 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:05:01,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01 WrapperNode [2019-10-15 01:05:01,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:01,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:05:01,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:05:01,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:05:01,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:01,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:02,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:02,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:02,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:02,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:02,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (1/1) ... [2019-10-15 01:05:02,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:05:02,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:05:02,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:05:02,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:05:02,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (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 [2019-10-15 01:05:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:05:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:05:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:05:02,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:05:02,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:05:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:05:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:05:02,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:05:02,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:05:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:05:02,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:05:02,400 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:05:02,400 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:05:02,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:02 BoogieIcfgContainer [2019-10-15 01:05:02,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:05:02,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:05:02,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:05:02,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:05:02,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:05:01" (1/3) ... [2019-10-15 01:05:02,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117586a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:02, skipping insertion in model container [2019-10-15 01:05:02,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:01" (2/3) ... [2019-10-15 01:05:02,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117586a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:02, skipping insertion in model container [2019-10-15 01:05:02,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:02" (3/3) ... [2019-10-15 01:05:02,410 INFO L109 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2019-10-15 01:05:02,423 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:05:02,434 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:05:02,458 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:05:02,521 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:05:02,522 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:05:02,522 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:05:02,522 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:05:02,522 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:05:02,522 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:05:02,523 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:05:02,523 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:05:02,543 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-15 01:05:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:05:02,549 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:02,550 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:02,552 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:02,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1778619980, now seen corresponding path program 1 times [2019-10-15 01:05:02,571 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:02,572 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262339574] [2019-10-15 01:05:02,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:02,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:02,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:02,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262339574] [2019-10-15 01:05:02,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:02,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:05:02,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078077266] [2019-10-15 01:05:02,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:05:02,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:02,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:05:02,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:05:02,826 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2019-10-15 01:05:03,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:03,047 INFO L93 Difference]: Finished difference Result 84 states and 147 transitions. [2019-10-15 01:05:03,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:05:03,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-15 01:05:03,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:03,061 INFO L225 Difference]: With dead ends: 84 [2019-10-15 01:05:03,062 INFO L226 Difference]: Without dead ends: 43 [2019-10-15 01:05:03,067 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 [2019-10-15 01:05:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-15 01:05:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-10-15 01:05:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-15 01:05:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2019-10-15 01:05:03,141 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 13 [2019-10-15 01:05:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:03,142 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2019-10-15 01:05:03,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:05:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2019-10-15 01:05:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:05:03,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:03,147 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:03,148 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1756664013, now seen corresponding path program 1 times [2019-10-15 01:05:03,150 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:03,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856446386] [2019-10-15 01:05:03,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:03,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:03,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:03,247 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856446386] [2019-10-15 01:05:03,248 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:03,248 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:05:03,248 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865391426] [2019-10-15 01:05:03,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:05:03,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:03,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:05:03,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:05:03,253 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand 5 states. [2019-10-15 01:05:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:03,371 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2019-10-15 01:05:03,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:05:03,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-15 01:05:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:03,375 INFO L225 Difference]: With dead ends: 56 [2019-10-15 01:05:03,376 INFO L226 Difference]: Without dead ends: 54 [2019-10-15 01:05:03,377 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 [2019-10-15 01:05:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-15 01:05:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2019-10-15 01:05:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-15 01:05:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2019-10-15 01:05:03,392 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 13 [2019-10-15 01:05:03,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:03,393 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2019-10-15 01:05:03,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:05:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2019-10-15 01:05:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:05:03,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:03,394 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:03,394 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:03,395 INFO L82 PathProgramCache]: Analyzing trace with hash -276218857, now seen corresponding path program 1 times [2019-10-15 01:05:03,395 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:03,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654668447] [2019-10-15 01:05:03,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:03,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:03,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:03,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654668447] [2019-10-15 01:05:03,445 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:03,446 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:05:03,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126257680] [2019-10-15 01:05:03,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:05:03,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:03,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:05:03,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:05:03,452 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand 5 states. [2019-10-15 01:05:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:03,578 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2019-10-15 01:05:03,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:05:03,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-10-15 01:05:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:03,582 INFO L225 Difference]: With dead ends: 56 [2019-10-15 01:05:03,582 INFO L226 Difference]: Without dead ends: 54 [2019-10-15 01:05:03,583 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 [2019-10-15 01:05:03,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-15 01:05:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-10-15 01:05:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-15 01:05:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2019-10-15 01:05:03,597 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 18 [2019-10-15 01:05:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:03,597 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2019-10-15 01:05:03,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:05:03,597 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2019-10-15 01:05:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-15 01:05:03,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:03,599 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:03,599 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash -12086036, now seen corresponding path program 1 times [2019-10-15 01:05:03,600 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:03,600 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436425893] [2019-10-15 01:05:03,600 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:03,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:03,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:05:03,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436425893] [2019-10-15 01:05:03,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:03,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:05:03,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300956093] [2019-10-15 01:05:03,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:05:03,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:03,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:05:03,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:05:03,691 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 6 states. [2019-10-15 01:05:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:03,864 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2019-10-15 01:05:03,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:05:03,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-15 01:05:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:03,866 INFO L225 Difference]: With dead ends: 60 [2019-10-15 01:05:03,866 INFO L226 Difference]: Without dead ends: 58 [2019-10-15 01:05:03,866 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 [2019-10-15 01:05:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-15 01:05:03,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-10-15 01:05:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-15 01:05:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2019-10-15 01:05:03,879 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 23 [2019-10-15 01:05:03,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:03,880 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2019-10-15 01:05:03,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:05:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2019-10-15 01:05:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 01:05:03,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:03,882 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:03,882 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:03,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1403678473, now seen corresponding path program 1 times [2019-10-15 01:05:03,883 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:03,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839433372] [2019-10-15 01:05:03,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:03,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:03,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:05:03,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839433372] [2019-10-15 01:05:03,940 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:03,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:05:03,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529169887] [2019-10-15 01:05:03,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:05:03,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:03,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:05:03,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:05:03,945 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 5 states. [2019-10-15 01:05:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:04,064 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2019-10-15 01:05:04,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:05:04,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-10-15 01:05:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:04,066 INFO L225 Difference]: With dead ends: 65 [2019-10-15 01:05:04,067 INFO L226 Difference]: Without dead ends: 63 [2019-10-15 01:05:04,067 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 [2019-10-15 01:05:04,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-15 01:05:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-10-15 01:05:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-15 01:05:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2019-10-15 01:05:04,101 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 28 [2019-10-15 01:05:04,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:04,102 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2019-10-15 01:05:04,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:05:04,102 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2019-10-15 01:05:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 01:05:04,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:04,105 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:04,107 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -869865180, now seen corresponding path program 1 times [2019-10-15 01:05:04,108 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:04,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52600934] [2019-10-15 01:05:04,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:04,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:04,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-15 01:05:04,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52600934] [2019-10-15 01:05:04,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:04,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:05:04,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232484633] [2019-10-15 01:05:04,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:05:04,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:04,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:05:04,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:05:04,248 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 6 states. [2019-10-15 01:05:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:04,388 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2019-10-15 01:05:04,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:05:04,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2019-10-15 01:05:04,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:04,391 INFO L225 Difference]: With dead ends: 74 [2019-10-15 01:05:04,391 INFO L226 Difference]: Without dead ends: 72 [2019-10-15 01:05:04,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:05:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-15 01:05:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2019-10-15 01:05:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-15 01:05:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2019-10-15 01:05:04,404 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 46 [2019-10-15 01:05:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:04,404 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2019-10-15 01:05:04,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:05:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2019-10-15 01:05:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 01:05:04,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:04,407 INFO L380 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:04,407 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:04,408 INFO L82 PathProgramCache]: Analyzing trace with hash -863098428, now seen corresponding path program 1 times [2019-10-15 01:05:04,408 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:04,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79791358] [2019-10-15 01:05:04,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:04,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:04,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-15 01:05:04,483 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79791358] [2019-10-15 01:05:04,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:04,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:05:04,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992775691] [2019-10-15 01:05:04,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:05:04,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:04,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:05:04,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:05:04,485 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 7 states. [2019-10-15 01:05:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:04,664 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2019-10-15 01:05:04,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:05:04,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-15 01:05:04,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:04,667 INFO L225 Difference]: With dead ends: 74 [2019-10-15 01:05:04,667 INFO L226 Difference]: Without dead ends: 72 [2019-10-15 01:05:04,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:05:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-15 01:05:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2019-10-15 01:05:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-15 01:05:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2019-10-15 01:05:04,681 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 56 [2019-10-15 01:05:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:04,681 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2019-10-15 01:05:04,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:05:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2019-10-15 01:05:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-15 01:05:04,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:04,684 INFO L380 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:04,685 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:04,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:04,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1349635161, now seen corresponding path program 1 times [2019-10-15 01:05:04,685 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:04,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173269084] [2019-10-15 01:05:04,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:04,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:04,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-10-15 01:05:04,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173269084] [2019-10-15 01:05:04,849 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:04,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:05:04,850 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946479657] [2019-10-15 01:05:04,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:05:04,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:04,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:05:04,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:05:04,851 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 8 states. [2019-10-15 01:05:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:05,060 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2019-10-15 01:05:05,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:05:05,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2019-10-15 01:05:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:05,062 INFO L225 Difference]: With dead ends: 72 [2019-10-15 01:05:05,063 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:05:05,064 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:05:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:05:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:05:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:05:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:05:05,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2019-10-15 01:05:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:05,068 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:05:05,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:05:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:05:05,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:05:05,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:05:05,442 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:05:05,442 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:05,442 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:05,443 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:05:05,443 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:05:05,443 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:05:05,443 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,443 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 53) no Hoare annotation was computed. [2019-10-15 01:05:05,443 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,444 INFO L439 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,444 INFO L439 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,444 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,444 INFO L439 ceAbstractionStarter]: At program point L32-1(line 32) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,444 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,444 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-10-15 01:05:05,444 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 51) the Hoare annotation is: (and (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,445 INFO L443 ceAbstractionStarter]: For program point L20-3(lines 20 51) no Hoare annotation was computed. [2019-10-15 01:05:05,445 INFO L439 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,445 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,445 INFO L443 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-10-15 01:05:05,445 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-10-15 01:05:05,445 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 50) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,445 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-15 01:05:05,445 INFO L443 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2019-10-15 01:05:05,445 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 53) no Hoare annotation was computed. [2019-10-15 01:05:05,446 INFO L439 ceAbstractionStarter]: At program point L42(lines 22 49) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,446 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,446 INFO L439 ceAbstractionStarter]: At program point L38-1(line 38) the Hoare annotation is: (and (<= 0 main_~j~0) (<= (+ main_~j~0 3) main_~bufsize~0) (<= 0 main_~i~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,446 INFO L439 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 4) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,446 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 53) the Hoare annotation is: true [2019-10-15 01:05:05,447 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,447 INFO L439 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 2) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,447 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 49) no Hoare annotation was computed. [2019-10-15 01:05:05,447 INFO L439 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (<= 0 main_~j~0) (<= 0 main_~i~0) (<= (+ main_~i~0 1) main_~len~0) (<= (+ main_~j~0 5) main_~bufsize~0) (<= (+ main_~limit~0 4) main_~bufsize~0)) [2019-10-15 01:05:05,447 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-10-15 01:05:05,448 INFO L443 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2019-10-15 01:05:05,448 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 01:05:05,448 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:05:05,448 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 01:05:05,448 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 01:05:05,448 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 01:05:05,448 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:05:05,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:05:05 BoogieIcfgContainer [2019-10-15 01:05:05,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:05:05,487 INFO L168 Benchmark]: Toolchain (without parser) took 3889.95 ms. Allocated memory was 144.2 MB in the beginning and 248.0 MB in the end (delta: 103.8 MB). Free memory was 102.5 MB in the beginning and 156.2 MB in the end (delta: -53.7 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:05,488 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 01:05:05,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.30 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 92.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:05,490 INFO L168 Benchmark]: Boogie Preprocessor took 156.51 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 180.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:05,491 INFO L168 Benchmark]: RCFGBuilder took 358.08 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 164.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:05,494 INFO L168 Benchmark]: TraceAbstraction took 3070.99 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 164.0 MB in the beginning and 156.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:05,504 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.30 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 92.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.51 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 180.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.08 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 164.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3070.99 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 164.0 MB in the beginning and 156.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 54.5 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: 20]: Loop Invariant Derived loop invariant: 0 <= i && limit + 4 <= bufsize - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (0 <= j && 0 <= i) && limit + 4 <= bufsize - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((0 <= j && 0 <= i) && i + 1 <= len) && j + 5 <= bufsize) && limit + 4 <= bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 11, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 395 SDtfs, 102 SDslu, 1026 SDs, 0 SdLazy, 528 SolverSat, 134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 55 PreInvPairs, 76 NumberOfFragments, 369 HoareAnnotationTreeSize, 55 FomulaSimplifications, 621 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 256 ConstructedInterpolants, 0 QuantifiedInterpolants, 23798 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 428/428 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...