/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:22:53,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:22:53,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:22:53,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 21:22:53,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:22:53,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:22:53,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:22:53,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:22:53,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:22:53,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:22:53,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:22:53,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:22:53,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:22:53,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:22:53,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:22:53,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:22:53,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:22:53,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:22:53,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:22:53,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:22:53,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:22:53,455 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:22:53,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:22:53,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:22:53,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:22:53,457 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:22:53,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:22:53,457 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:22:53,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:22:53,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:22:53,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:22:53,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:22:53,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:22:53,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:22:53,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:22:53,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:22:53,459 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:22:53,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:22:53,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:22:53,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:22:53,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:22:53,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:22:53,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:22:53,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:22:53,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:22:53,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:22:53,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:22:53,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:22:53,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:22:53,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:22:53,736 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:22:53,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:22:53,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:22:53,759 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:22:53,760 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:22:53,761 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-11-06 21:22:53,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b916122d4/b97be1c7265644ee86ddc72b09be5fbe/FLAG2d1c2674a [2019-11-06 21:22:54,266 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:22:54,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-11-06 21:22:54,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b916122d4/b97be1c7265644ee86ddc72b09be5fbe/FLAG2d1c2674a [2019-11-06 21:22:54,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b916122d4/b97be1c7265644ee86ddc72b09be5fbe [2019-11-06 21:22:54,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:22:54,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:22:54,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:54,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:22:54,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:22:54,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:54,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529b5f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54, skipping insertion in model container [2019-11-06 21:22:54,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:54,723 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:22:54,741 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:22:54,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:54,927 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:22:54,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:54,953 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:22:54,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54 WrapperNode [2019-11-06 21:22:54,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:54,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:22:54,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:22:54,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:22:55,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:55,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:55,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:55,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:55,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:55,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:55,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (1/1) ... [2019-11-06 21:22:55,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:22:55,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:22:55,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:22:55,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:22:55,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:22:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:22:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:22:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:22:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:22:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:22:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:22:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:22:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:22:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:22:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:22:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:22:55,343 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:22:55,344 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:22:55,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:55 BoogieIcfgContainer [2019-11-06 21:22:55,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:22:55,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:22:55,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:22:55,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:22:55,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:22:54" (1/3) ... [2019-11-06 21:22:55,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78dbfb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:55, skipping insertion in model container [2019-11-06 21:22:55,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:54" (2/3) ... [2019-11-06 21:22:55,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78dbfb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:55, skipping insertion in model container [2019-11-06 21:22:55,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:55" (3/3) ... [2019-11-06 21:22:55,353 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2019-11-06 21:22:55,363 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:22:55,370 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:22:55,379 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:22:55,402 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:22:55,402 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:22:55,402 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:22:55,402 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:22:55,402 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:22:55,403 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:22:55,403 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:22:55,403 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:22:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-06 21:22:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-06 21:22:55,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:55,435 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:55,436 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:55,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:55,442 INFO L82 PathProgramCache]: Analyzing trace with hash -382823925, now seen corresponding path program 1 times [2019-11-06 21:22:55,449 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:55,449 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298307089] [2019-11-06 21:22:55,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:55,544 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298307089] [2019-11-06 21:22:55,545 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:55,545 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:22:55,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166843840] [2019-11-06 21:22:55,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:22:55,552 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:55,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:22:55,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:22:55,569 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-11-06 21:22:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:55,592 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2019-11-06 21:22:55,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:22:55,594 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-06 21:22:55,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:55,603 INFO L225 Difference]: With dead ends: 35 [2019-11-06 21:22:55,603 INFO L226 Difference]: Without dead ends: 15 [2019-11-06 21:22:55,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:22:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-06 21:22:55,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-06 21:22:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-06 21:22:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-06 21:22:55,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2019-11-06 21:22:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:55,646 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-06 21:22:55,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:22:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-06 21:22:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:22:55,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:55,647 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:55,648 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1944032635, now seen corresponding path program 1 times [2019-11-06 21:22:55,649 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:55,649 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661175557] [2019-11-06 21:22:55,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:55,976 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2019-11-06 21:22:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:56,001 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661175557] [2019-11-06 21:22:56,002 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:56,002 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:56,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781889252] [2019-11-06 21:22:56,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:56,004 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:56,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:56,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:56,005 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2019-11-06 21:22:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:56,075 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-11-06 21:22:56,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:22:56,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-06 21:22:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:56,077 INFO L225 Difference]: With dead ends: 23 [2019-11-06 21:22:56,078 INFO L226 Difference]: Without dead ends: 17 [2019-11-06 21:22:56,079 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:56,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-06 21:22:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-06 21:22:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-06 21:22:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-06 21:22:56,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2019-11-06 21:22:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:56,085 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-06 21:22:56,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-06 21:22:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 21:22:56,086 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:56,087 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:56,087 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:56,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1646139566, now seen corresponding path program 1 times [2019-11-06 21:22:56,088 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:56,088 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106193079] [2019-11-06 21:22:56,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:58,432 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 83 DAG size of output: 10 [2019-11-06 21:22:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:58,481 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106193079] [2019-11-06 21:22:58,481 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236609350] [2019-11-06 21:22:58,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:58,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-06 21:22:58,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:58,671 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:22:58,671 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-06 21:22:58,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613569580] [2019-11-06 21:22:58,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:22:58,673 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:58,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:22:58,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:22:58,674 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 12 states. [2019-11-06 21:22:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:58,743 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-06 21:22:58,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:22:58,743 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2019-11-06 21:22:58,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:58,744 INFO L225 Difference]: With dead ends: 28 [2019-11-06 21:22:58,745 INFO L226 Difference]: Without dead ends: 22 [2019-11-06 21:22:58,746 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:22:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-06 21:22:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-06 21:22:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-06 21:22:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-06 21:22:58,751 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2019-11-06 21:22:58,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:58,751 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-06 21:22:58,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:22:58,752 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-06 21:22:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 21:22:58,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:58,753 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:58,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:58,957 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:58,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:58,957 INFO L82 PathProgramCache]: Analyzing trace with hash -945074988, now seen corresponding path program 1 times [2019-11-06 21:22:58,958 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:58,958 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953423376] [2019-11-06 21:22:58,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 21:22:59,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953423376] [2019-11-06 21:22:59,010 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:59,010 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:22:59,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201637662] [2019-11-06 21:22:59,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:22:59,011 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:22:59,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:22:59,012 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-11-06 21:22:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:59,025 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-11-06 21:22:59,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:22:59,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-06 21:22:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:59,029 INFO L225 Difference]: With dead ends: 31 [2019-11-06 21:22:59,029 INFO L226 Difference]: Without dead ends: 20 [2019-11-06 21:22:59,029 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:22:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-06 21:22:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-06 21:22:59,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-06 21:22:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-06 21:22:59,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2019-11-06 21:22:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:59,039 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-06 21:22:59,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:22:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-06 21:22:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-06 21:22:59,040 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:59,040 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:59,040 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:59,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:59,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1104392731, now seen corresponding path program 2 times [2019-11-06 21:22:59,041 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:59,041 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151414670] [2019-11-06 21:22:59,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:59,424 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151414670] [2019-11-06 21:22:59,424 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721893891] [2019-11-06 21:22:59,424 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:59,461 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:22:59,461 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:22:59,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-06 21:22:59,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:59,651 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:22:59,651 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-06 21:22:59,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024319374] [2019-11-06 21:22:59,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-06 21:22:59,653 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:59,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-06 21:22:59,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:22:59,654 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 16 states. [2019-11-06 21:22:59,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:59,763 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-11-06 21:22:59,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:22:59,764 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2019-11-06 21:22:59,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:59,765 INFO L225 Difference]: With dead ends: 38 [2019-11-06 21:22:59,765 INFO L226 Difference]: Without dead ends: 23 [2019-11-06 21:22:59,767 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:22:59,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-06 21:22:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-06 21:22:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-06 21:22:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-11-06 21:22:59,775 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2019-11-06 21:22:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:59,775 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-11-06 21:22:59,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-06 21:22:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-11-06 21:22:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 21:22:59,777 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:59,778 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:59,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:59,979 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:59,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1468987726, now seen corresponding path program 3 times [2019-11-06 21:22:59,980 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:59,980 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410076315] [2019-11-06 21:22:59,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:02,473 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410076315] [2019-11-06 21:23:02,474 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887212893] [2019-11-06 21:23:02,474 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:02,511 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-06 21:23:02,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:23:02,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-06 21:23:02,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:02,939 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:23:02,939 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-11-06 21:23:02,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247964944] [2019-11-06 21:23:02,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 21:23:02,940 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:02,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 21:23:02,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:23:02,941 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 20 states. [2019-11-06 21:23:07,135 WARN L191 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2019-11-06 21:23:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:07,387 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2019-11-06 21:23:07,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:23:07,387 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 22 [2019-11-06 21:23:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:07,389 INFO L225 Difference]: With dead ends: 51 [2019-11-06 21:23:07,389 INFO L226 Difference]: Without dead ends: 32 [2019-11-06 21:23:07,391 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2019-11-06 21:23:07,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-06 21:23:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-06 21:23:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 21:23:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-11-06 21:23:07,396 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2019-11-06 21:23:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:07,397 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-11-06 21:23:07,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-06 21:23:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-11-06 21:23:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-06 21:23:07,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:07,398 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:07,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:07,599 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:07,600 INFO L82 PathProgramCache]: Analyzing trace with hash 755794836, now seen corresponding path program 1 times [2019-11-06 21:23:07,600 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:07,601 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631542774] [2019-11-06 21:23:07,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:07,867 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631542774] [2019-11-06 21:23:07,867 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658496292] [2019-11-06 21:23:07,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:07,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 21:23:07,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 21:23:07,979 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:23:07,979 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2019-11-06 21:23:07,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938699551] [2019-11-06 21:23:07,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 21:23:07,980 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:07,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 21:23:07,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:23:07,981 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2019-11-06 21:23:08,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:08,083 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-06 21:23:08,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:23:08,084 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2019-11-06 21:23:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:08,085 INFO L225 Difference]: With dead ends: 43 [2019-11-06 21:23:08,085 INFO L226 Difference]: Without dead ends: 32 [2019-11-06 21:23:08,086 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:23:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-06 21:23:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-06 21:23:08,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 21:23:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-11-06 21:23:08,091 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 28 [2019-11-06 21:23:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:08,091 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-11-06 21:23:08,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 21:23:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-11-06 21:23:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 21:23:08,092 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:08,093 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:08,297 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:08,297 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:08,298 INFO L82 PathProgramCache]: Analyzing trace with hash -306838693, now seen corresponding path program 4 times [2019-11-06 21:23:08,298 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:08,298 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592395143] [2019-11-06 21:23:08,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:08,639 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2019-11-06 21:23:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:09,447 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592395143] [2019-11-06 21:23:09,447 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069446305] [2019-11-06 21:23:09,447 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:09,483 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-06 21:23:09,483 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:23:09,484 WARN L254 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 58 conjunts are in the unsatisfiable core [2019-11-06 21:23:09,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:09,994 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:23:09,994 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-11-06 21:23:09,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106223330] [2019-11-06 21:23:09,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-06 21:23:09,995 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:09,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-06 21:23:09,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2019-11-06 21:23:09,996 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states. [2019-11-06 21:23:12,371 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2019-11-06 21:23:14,554 WARN L191 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2019-11-06 21:23:14,999 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2019-11-06 21:23:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:15,045 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-11-06 21:23:15,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-06 21:23:15,046 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31 [2019-11-06 21:23:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:15,047 INFO L225 Difference]: With dead ends: 37 [2019-11-06 21:23:15,047 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:23:15,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2019-11-06 21:23:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:23:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:23:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:23:15,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:23:15,049 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-11-06 21:23:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:15,050 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:23:15,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-06 21:23:15,050 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:23:15,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:23:15,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:15,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:23:15,326 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:23:15,326 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:15,326 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:15,326 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:23:15,327 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:23:15,327 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:23:15,327 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2019-11-06 21:23:15,327 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 29) no Hoare annotation was computed. [2019-11-06 21:23:15,327 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 35) no Hoare annotation was computed. [2019-11-06 21:23:15,327 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 10 35) no Hoare annotation was computed. [2019-11-06 21:23:15,327 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 30) no Hoare annotation was computed. [2019-11-06 21:23:15,327 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 10 35) no Hoare annotation was computed. [2019-11-06 21:23:15,327 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 35) no Hoare annotation was computed. [2019-11-06 21:23:15,328 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (= (+ main_~a~0 (* 4294967296 (div main_~b~0 4294967296))) (+ (* 4294967296 (div main_~a~0 4294967296)) main_~b~0)) [2019-11-06 21:23:15,328 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 35) the Hoare annotation is: true [2019-11-06 21:23:15,328 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-11-06 21:23:15,328 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:23:15,328 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:23:15,329 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:23:15,329 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:23:15,329 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:23:15,329 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:23:15,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:23:15 BoogieIcfgContainer [2019-11-06 21:23:15,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:23:15,333 INFO L168 Benchmark]: Toolchain (without parser) took 20627.08 ms. Allocated memory was 136.3 MB in the beginning and 283.1 MB in the end (delta: 146.8 MB). Free memory was 101.0 MB in the beginning and 181.0 MB in the end (delta: -80.0 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:15,334 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:23:15,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.48 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 91.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:15,336 INFO L168 Benchmark]: Boogie Preprocessor took 122.31 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 177.6 MB in the end (delta: -86.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:15,336 INFO L168 Benchmark]: RCFGBuilder took 267.91 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 165.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:15,337 INFO L168 Benchmark]: TraceAbstraction took 19986.15 ms. Allocated memory was 199.8 MB in the beginning and 283.1 MB in the end (delta: 83.4 MB). Free memory was 164.7 MB in the beginning and 181.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:15,340 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 246.48 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 91.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.31 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 177.6 MB in the end (delta: -86.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.91 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 165.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19986.15 ms. Allocated memory was 199.8 MB in the beginning and 283.1 MB in the end (delta: 83.4 MB). Free memory was 164.7 MB in the beginning and 181.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 67.0 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Result: SAFE, OverallTime: 19.9s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 141 SDtfs, 66 SDslu, 741 SDs, 0 SdLazy, 579 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 18 PreInvPairs, 26 NumberOfFragments, 20 HoareAnnotationTreeSize, 18 FomulaSimplifications, 98 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 61252 SizeOfPredicates, 13 NumberOfNonLiveVariables, 405 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 32/244 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...