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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:04:29,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:04:29,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:04:29,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:04:29,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:04:29,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:04:29,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:04:29,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:04:29,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:04:29,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:04:29,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:04:29,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:04:29,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:04:29,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:04:29,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:04:29,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:04:29,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:04:29,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:04:29,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:04:29,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:04:29,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:04:29,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:04:29,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:04:29,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:04:29,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:04:29,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:04:29,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:04:29,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:04:29,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:04:29,628 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:04:29,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:04:29,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:04:29,629 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:04:29,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:04:29,630 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:04:29,630 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:04:29,630 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:04:29,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:04:29,631 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:04:29,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:04:29,632 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:04:29,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:04:29,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:04:29,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:04:29,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:04:29,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:04:29,633 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:04:29,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:04:29,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:04:29,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:04:29,634 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:04:29,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:04:29,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:04:29,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:04:29,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:04:29,636 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:04:29,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:04:29,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:04:29,636 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:04:29,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:04:29,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:04:29,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:04:29,709 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:04:29,710 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:04:29,711 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2019-09-16 17:04:29,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bafbf789/f0d7ad36ae6a4741b325e31f9b6300cd/FLAG2ab1a9d9a [2019-09-16 17:04:30,300 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:04:30,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2019-09-16 17:04:30,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bafbf789/f0d7ad36ae6a4741b325e31f9b6300cd/FLAG2ab1a9d9a [2019-09-16 17:04:30,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bafbf789/f0d7ad36ae6a4741b325e31f9b6300cd [2019-09-16 17:04:30,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:04:30,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:04:30,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:30,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:04:30,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:04:30,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:30,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f5000c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30, skipping insertion in model container [2019-09-16 17:04:30,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:30,636 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:04:30,662 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:04:30,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:30,889 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:04:30,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:30,924 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:04:30,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30 WrapperNode [2019-09-16 17:04:30,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:30,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:04:30,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:04:30,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:04:31,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:31,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:31,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:31,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:31,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:31,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:31,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (1/1) ... [2019-09-16 17:04:31,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:04:31,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:04:31,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:04:31,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:04:31,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (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 [2019-09-16 17:04:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:04:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:04:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:04:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:04:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-16 17:04:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:04:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-09-16 17:04:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-09-16 17:04:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:04:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:04:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:04:31,360 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:04:31,360 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 17:04:31,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:31 BoogieIcfgContainer [2019-09-16 17:04:31,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:04:31,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:04:31,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:04:31,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:04:31,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:04:30" (1/3) ... [2019-09-16 17:04:31,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274dae14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:31, skipping insertion in model container [2019-09-16 17:04:31,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:30" (2/3) ... [2019-09-16 17:04:31,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274dae14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:31, skipping insertion in model container [2019-09-16 17:04:31,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:31" (3/3) ... [2019-09-16 17:04:31,374 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2019-09-16 17:04:31,394 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:04:31,405 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:04:31,448 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:04:31,484 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:04:31,484 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:04:31,484 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:04:31,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:04:31,486 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:04:31,486 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:04:31,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:04:31,486 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:04:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-16 17:04:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-09-16 17:04:31,507 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:31,507 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:31,509 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2019-09-16 17:04:31,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:31,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:31,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:31,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:31,558 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:31,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:31,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:04:31,637 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:31,641 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:31,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:31,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:31,657 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2019-09-16 17:04:31,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:31,749 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2019-09-16 17:04:31,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:31,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-09-16 17:04:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:31,763 INFO L225 Difference]: With dead ends: 47 [2019-09-16 17:04:31,764 INFO L226 Difference]: Without dead ends: 39 [2019-09-16 17:04:31,766 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-16 17:04:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-16 17:04:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-16 17:04:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2019-09-16 17:04:31,816 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2019-09-16 17:04:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:31,817 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2019-09-16 17:04:31,817 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2019-09-16 17:04:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-16 17:04:31,819 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:31,820 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:31,820 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:31,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2019-09-16 17:04:31,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:31,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:31,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:31,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:31,834 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:31,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:31,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:04:31,882 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:31,883 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:31,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:31,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:31,885 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2019-09-16 17:04:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:31,934 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2019-09-16 17:04:31,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:31,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-09-16 17:04:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:31,936 INFO L225 Difference]: With dead ends: 53 [2019-09-16 17:04:31,937 INFO L226 Difference]: Without dead ends: 53 [2019-09-16 17:04:31,937 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-09-16 17:04:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2019-09-16 17:04:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-09-16 17:04:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2019-09-16 17:04:31,947 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 13 [2019-09-16 17:04:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:31,947 INFO L475 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2019-09-16 17:04:31,947 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2019-09-16 17:04:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-16 17:04:31,949 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:31,949 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:31,949 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1966887380, now seen corresponding path program 1 times [2019-09-16 17:04:31,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:31,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:31,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:31,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:31,952 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:31,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:31,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:04:31,994 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:31,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:31,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:31,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:31,995 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand 3 states. [2019-09-16 17:04:32,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:32,044 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2019-09-16 17:04:32,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:32,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-09-16 17:04:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:32,047 INFO L225 Difference]: With dead ends: 70 [2019-09-16 17:04:32,047 INFO L226 Difference]: Without dead ends: 70 [2019-09-16 17:04:32,047 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:32,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-16 17:04:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-09-16 17:04:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-09-16 17:04:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2019-09-16 17:04:32,057 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 13 [2019-09-16 17:04:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:32,057 INFO L475 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2019-09-16 17:04:32,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2019-09-16 17:04:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 17:04:32,059 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:32,059 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:32,060 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:32,060 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2019-09-16 17:04:32,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:32,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:32,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:32,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:32,063 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:04:32,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:32,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:04:32,115 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:32,115 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:32,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:32,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:32,117 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand 3 states. [2019-09-16 17:04:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:32,180 INFO L93 Difference]: Finished difference Result 93 states and 124 transitions. [2019-09-16 17:04:32,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:32,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-09-16 17:04:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:32,182 INFO L225 Difference]: With dead ends: 93 [2019-09-16 17:04:32,182 INFO L226 Difference]: Without dead ends: 93 [2019-09-16 17:04:32,183 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-09-16 17:04:32,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2019-09-16 17:04:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-09-16 17:04:32,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 123 transitions. [2019-09-16 17:04:32,194 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 123 transitions. Word has length 20 [2019-09-16 17:04:32,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:32,194 INFO L475 AbstractCegarLoop]: Abstraction has 91 states and 123 transitions. [2019-09-16 17:04:32,194 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 123 transitions. [2019-09-16 17:04:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-16 17:04:32,202 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:32,202 INFO L407 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:32,203 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:32,203 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2019-09-16 17:04:32,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:32,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:32,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:32,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:32,206 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:04:32,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:32,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:04:32,250 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:32,250 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:32,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:32,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:32,251 INFO L87 Difference]: Start difference. First operand 91 states and 123 transitions. Second operand 3 states. [2019-09-16 17:04:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:32,296 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2019-09-16 17:04:32,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:32,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-09-16 17:04:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:32,299 INFO L225 Difference]: With dead ends: 95 [2019-09-16 17:04:32,299 INFO L226 Difference]: Without dead ends: 76 [2019-09-16 17:04:32,300 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-09-16 17:04:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2019-09-16 17:04:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-09-16 17:04:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2019-09-16 17:04:32,308 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 23 [2019-09-16 17:04:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:32,308 INFO L475 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2019-09-16 17:04:32,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2019-09-16 17:04:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-16 17:04:32,310 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:32,311 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:32,311 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:32,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2019-09-16 17:04:32,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:32,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:32,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:32,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:32,314 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-16 17:04:32,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:32,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:04:32,358 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:32,359 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:32,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:32,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:32,359 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand 3 states. [2019-09-16 17:04:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:32,370 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2019-09-16 17:04:32,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:32,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-09-16 17:04:32,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:32,371 INFO L225 Difference]: With dead ends: 71 [2019-09-16 17:04:32,371 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:04:32,372 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:04:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:04:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:04:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:04:32,373 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-09-16 17:04:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:32,374 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:04:32,374 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:04:32,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:04:32,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:04:32 BoogieIcfgContainer [2019-09-16 17:04:32,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:04:32,383 INFO L168 Benchmark]: Toolchain (without parser) took 1763.79 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 88.0 MB in the beginning and 98.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:32,384 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:04:32,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.31 ms. Allocated memory is still 137.9 MB. Free memory was 87.7 MB in the beginning and 77.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:32,386 INFO L168 Benchmark]: Boogie Preprocessor took 127.41 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 77.5 MB in the beginning and 178.6 MB in the end (delta: -101.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:32,387 INFO L168 Benchmark]: RCFGBuilder took 308.82 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 165.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:32,387 INFO L168 Benchmark]: TraceAbstraction took 1016.39 ms. Allocated memory is still 201.9 MB. Free memory was 165.0 MB in the beginning and 98.5 MB in the end (delta: 66.5 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:32,391 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.31 ms. Allocated memory is still 137.9 MB. Free memory was 87.7 MB in the beginning and 77.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.41 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 77.5 MB in the beginning and 178.6 MB in the end (delta: -101.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.82 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 165.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1016.39 ms. Allocated memory is still 201.9 MB. Free memory was 165.0 MB in the beginning and 98.5 MB in the end (delta: 66.5 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 139]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 184 SDtfs, 92 SDslu, 109 SDs, 0 SdLazy, 95 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...