java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:05:49,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:05:49,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:05:49,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:05:49,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:05:49,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:05:49,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:05:49,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:05:49,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:05:49,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:05:49,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:05:49,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:05:49,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:05:49,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:05:49,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:05:49,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:05:49,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:05:49,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:05:49,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:05:49,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:05:49,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:05:49,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:05:49,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:05:49,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:05:49,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:05:49,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:05:49,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:05:49,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:05:49,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:05:49,596 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:05:49,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:05:49,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:05:49,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:05:49,600 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:05:49,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:05:49,600 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:05:49,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:05:49,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:05:49,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:05:49,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:05:49,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:05:49,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:05:49,602 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:05:49,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:05:49,603 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:05:49,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:05:49,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:05:49,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:05:49,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:05:49,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:05:49,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:05:49,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:05:49,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:05:49,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:05:49,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:05:49,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:05:49,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:05:49,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:05:49,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:05:49,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:05:49,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:05:49,957 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:05:49,958 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:05:49,958 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2019-10-15 01:05:50,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4962f4607/19610f7a69234003a2459f8b0750c048/FLAG83117be48 [2019-10-15 01:05:50,509 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:05:50,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2019-10-15 01:05:50,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4962f4607/19610f7a69234003a2459f8b0750c048/FLAG83117be48 [2019-10-15 01:05:50,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4962f4607/19610f7a69234003a2459f8b0750c048 [2019-10-15 01:05:50,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:05:50,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:05:50,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:50,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:05:50,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:05:50,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:50" (1/1) ... [2019-10-15 01:05:50,857 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 15.10 01:05:50, skipping insertion in model container [2019-10-15 01:05:50,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:50" (1/1) ... [2019-10-15 01:05:50,864 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:05:50,880 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:05:51,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:51,091 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:05:51,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:51,120 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:05:51,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51 WrapperNode [2019-10-15 01:05:51,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:51,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:05:51,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:05:51,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:05:51,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (1/1) ... [2019-10-15 01:05:51,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (1/1) ... [2019-10-15 01:05:51,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (1/1) ... [2019-10-15 01:05:51,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (1/1) ... [2019-10-15 01:05:51,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (1/1) ... [2019-10-15 01:05:51,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (1/1) ... [2019-10-15 01:05:51,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (1/1) ... [2019-10-15 01:05:51,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:05:51,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:05:51,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:05:51,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:05:51,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:05:51,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:05:51,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:05:51,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:05:51,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:05:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:05:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:05:51,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:05:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:05:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:05:51,536 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:05:51,536 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 01:05:51,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:51 BoogieIcfgContainer [2019-10-15 01:05:51,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:05:51,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:05:51,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:05:51,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:05:51,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:05:50" (1/3) ... [2019-10-15 01:05:51,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df8fdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:51, skipping insertion in model container [2019-10-15 01:05:51,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:51" (2/3) ... [2019-10-15 01:05:51,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df8fdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:51, skipping insertion in model container [2019-10-15 01:05:51,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:51" (3/3) ... [2019-10-15 01:05:51,550 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2019-10-15 01:05:51,561 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:05:51,568 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:05:51,594 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:05:51,618 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:05:51,618 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:05:51,618 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:05:51,618 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:05:51,618 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:05:51,619 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:05:51,619 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:05:51,619 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:05:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-15 01:05:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:05:51,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:51,639 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:51,641 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:51,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:51,646 INFO L82 PathProgramCache]: Analyzing trace with hash -84144223, now seen corresponding path program 1 times [2019-10-15 01:05:51,653 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:51,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602867369] [2019-10-15 01:05:51,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:51,654 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:51,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:51,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602867369] [2019-10-15 01:05:51,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:51,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:05:51,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013779983] [2019-10-15 01:05:51,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:05:51,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:51,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:05:51,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:05:51,781 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-10-15 01:05:51,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:51,804 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2019-10-15 01:05:51,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:05:51,806 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-15 01:05:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:51,814 INFO L225 Difference]: With dead ends: 47 [2019-10-15 01:05:51,814 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 01:05:51,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:05:51,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 01:05:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-15 01:05:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 01:05:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-15 01:05:51,849 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-10-15 01:05:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:51,850 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-15 01:05:51,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:05:51,850 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-15 01:05:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:05:51,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:51,851 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:51,851 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:51,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:51,852 INFO L82 PathProgramCache]: Analyzing trace with hash -89685349, now seen corresponding path program 1 times [2019-10-15 01:05:51,852 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:51,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718470301] [2019-10-15 01:05:51,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:51,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:51,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:51,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718470301] [2019-10-15 01:05:51,988 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:51,988 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:05:51,988 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828502976] [2019-10-15 01:05:51,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:05:51,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:51,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:05:51,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:05:51,991 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2019-10-15 01:05:52,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:52,016 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2019-10-15 01:05:52,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:05:52,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-15 01:05:52,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:52,018 INFO L225 Difference]: With dead ends: 48 [2019-10-15 01:05:52,018 INFO L226 Difference]: Without dead ends: 31 [2019-10-15 01:05:52,019 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:05:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-15 01:05:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-10-15 01:05:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 01:05:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-15 01:05:52,026 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2019-10-15 01:05:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:52,027 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-15 01:05:52,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:05:52,027 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-15 01:05:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 01:05:52,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:52,028 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:52,029 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:52,029 INFO L82 PathProgramCache]: Analyzing trace with hash 374245081, now seen corresponding path program 1 times [2019-10-15 01:05:52,030 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:52,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959379546] [2019-10-15 01:05:52,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:52,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:52,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:52,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959379546] [2019-10-15 01:05:52,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776502633] [2019-10-15 01:05:52,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:52,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 01:05:52,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:52,254 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:52,305 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [16041028] [2019-10-15 01:05:52,311 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 17 [2019-10-15 01:05:52,353 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:05:52,353 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:05:52,423 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-15 01:05:52,735 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:05:52,739 INFO L272 AbstractInterpreter]: Visited 16 different actions 72 times. Merged at 3 different actions 24 times. Widened at 1 different actions 6 times. Performed 108 root evaluator evaluations with a maximum evaluation depth of 12. Performed 108 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2019-10-15 01:05:52,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:52,744 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:05:52,745 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:05:52,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2019-10-15 01:05:52,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475977937] [2019-10-15 01:05:52,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:05:52,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:52,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:05:52,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:05:52,757 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2019-10-15 01:05:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:52,843 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-10-15 01:05:52,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:05:52,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-10-15 01:05:52,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:52,845 INFO L225 Difference]: With dead ends: 54 [2019-10-15 01:05:52,845 INFO L226 Difference]: Without dead ends: 36 [2019-10-15 01:05:52,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:05:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-15 01:05:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2019-10-15 01:05:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-15 01:05:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-15 01:05:52,859 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 16 [2019-10-15 01:05:52,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:52,859 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-15 01:05:52,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:05:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-15 01:05:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-15 01:05:52,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:52,861 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:53,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:53,064 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:53,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:53,064 INFO L82 PathProgramCache]: Analyzing trace with hash -79001965, now seen corresponding path program 2 times [2019-10-15 01:05:53,064 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:53,065 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16961176] [2019-10-15 01:05:53,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:53,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:53,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:53,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16961176] [2019-10-15 01:05:53,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649102276] [2019-10-15 01:05:53,217 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:53,856 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-15 01:05:53,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:05:53,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:05:53,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:53,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:53,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:53,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:53,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:53,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:56,916 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2019-10-15 01:05:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:05:59,068 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:07,977 WARN L191 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 13 [2019-10-15 01:06:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:06:08,037 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:06:08,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 17 [2019-10-15 01:06:08,037 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895458642] [2019-10-15 01:06:08,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:06:08,039 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:08,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:06:08,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=200, Unknown=5, NotChecked=0, Total=272 [2019-10-15 01:06:08,040 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 12 states. [2019-10-15 01:06:12,391 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 24 [2019-10-15 01:06:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:12,458 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-10-15 01:06:12,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:06:12,459 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2019-10-15 01:06:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:12,460 INFO L225 Difference]: With dead ends: 36 [2019-10-15 01:06:12,460 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:06:12,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=82, Invalid=255, Unknown=5, NotChecked=0, Total=342 [2019-10-15 01:06:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:06:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:06:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:06:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:06:12,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-15 01:06:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:12,462 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:06:12,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:06:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:06:12,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:06:12,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:12,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:06:12,865 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:06:12,865 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:12,865 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:12,865 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:06:12,866 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:12,866 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:12,866 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-10-15 01:06:12,866 INFO L439 ceAbstractionStarter]: At program point L19-2(lines 19 22) the Hoare annotation is: (or (< (mod main_~v~0 4294967296) 10) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-10-15 01:06:12,867 INFO L443 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2019-10-15 01:06:12,867 INFO L439 ceAbstractionStarter]: At program point L20-3(line 20) the Hoare annotation is: (or (and (<= main_~v~0 0) (< 0 (+ (div main_~v~0 4294967296) 1))) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-10-15 01:06:12,867 INFO L439 ceAbstractionStarter]: At program point L20-4(line 20) the Hoare annotation is: (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-10-15 01:06:12,867 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 22) no Hoare annotation was computed. [2019-10-15 01:06:12,867 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 22) the Hoare annotation is: (or (< (mod main_~v~0 4294967296) 10) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-10-15 01:06:12,868 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 10 23) no Hoare annotation was computed. [2019-10-15 01:06:12,868 INFO L443 ceAbstractionStarter]: For program point L21(lines 19 22) no Hoare annotation was computed. [2019-10-15 01:06:12,868 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 22) no Hoare annotation was computed. [2019-10-15 01:06:12,868 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 22) the Hoare annotation is: (or (< (mod main_~v~0 4294967296) 10) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-10-15 01:06:12,868 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-10-15 01:06:12,868 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2019-10-15 01:06:12,868 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 22) the Hoare annotation is: (or (< (mod main_~v~0 4294967296) 10) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-10-15 01:06:12,869 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 01:06:12,869 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 01:06:12,869 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:06:12,869 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 01:06:12,870 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 01:06:12,870 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:06:12,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:12 BoogieIcfgContainer [2019-10-15 01:06:12,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:12,886 INFO L168 Benchmark]: Toolchain (without parser) took 22038.01 ms. Allocated memory was 137.9 MB in the beginning and 229.1 MB in the end (delta: 91.2 MB). Free memory was 101.1 MB in the beginning and 91.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 100.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:12,887 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 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. [2019-10-15 01:06:12,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.15 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:12,890 INFO L168 Benchmark]: Boogie Preprocessor took 128.98 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 91.4 MB in the beginning and 178.1 MB in the end (delta: -86.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:12,891 INFO L168 Benchmark]: RCFGBuilder took 289.41 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 164.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:12,892 INFO L168 Benchmark]: TraceAbstraction took 21342.69 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 164.1 MB in the beginning and 91.4 MB in the end (delta: 72.7 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:12,896 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 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 272.15 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.98 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 91.4 MB in the beginning and 178.1 MB in the end (delta: -86.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.41 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 164.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21342.69 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 164.1 MB in the beginning and 91.4 MB in the end (delta: 72.7 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (v <= 0 && 0 < v / 4294967296 + 1) || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (v + 4294967295) % 4294967296 < 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 21.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 106 SDtfs, 63 SDslu, 254 SDs, 0 SdLazy, 79 SolverSat, 14 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 14 PreInvPairs, 28 NumberOfFragments, 89 HoareAnnotationTreeSize, 14 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 104 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 134 ConstructedInterpolants, 2 QuantifiedInterpolants, 6939 SizeOfPredicates, 4 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 32/51 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...