/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:11:24,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:11:24,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:11:24,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 22:11:24,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:11:24,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:11:24,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:11:24,617 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 [2019-11-23 22:11:24,649 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:11:24,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:11:24,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:11:24,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:11:24,654 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:11:24,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:11:24,655 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:11:24,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:11:24,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:11:24,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:11:24,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:11:24,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:11:24,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:11:24,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:11:24,658 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:11:24,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:11:24,659 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:11:24,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:11:24,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:11:24,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:11:24,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:11:24,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:11:24,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:11:24,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:11:24,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:11:24,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:11:24,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:11:24,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:11:24,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:11:24,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:11:24,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:11:24,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:11:24,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:11:24,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:11:24,954 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:11:24,955 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-11-23 22:11:25,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d751fb0/b42eaa099cf64e91ac73af933819d64f/FLAG928b41868 [2019-11-23 22:11:25,459 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:11:25,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2019-11-23 22:11:25,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d751fb0/b42eaa099cf64e91ac73af933819d64f/FLAG928b41868 [2019-11-23 22:11:25,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d751fb0/b42eaa099cf64e91ac73af933819d64f [2019-11-23 22:11:25,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:11:25,858 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:11:25,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:25,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:11:25,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:11:25,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:25" (1/1) ... [2019-11-23 22:11:25,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f8e6ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:25, skipping insertion in model container [2019-11-23 22:11:25,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:25" (1/1) ... [2019-11-23 22:11:25,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:11:25,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:11:26,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:26,101 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:11:26,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:26,134 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:11:26,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26 WrapperNode [2019-11-23 22:11:26,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:26,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:26,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:11:26,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:11:26,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:26,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:11:26,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:11:26,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:11:26,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (1/1) ... [2019-11-23 22:11:26,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:11:26,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:11:26,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:11:26,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:11:26,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (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 [2019-11-23 22:11:26,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:11:26,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:11:26,502 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:11:26,503 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:11:26,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:26 BoogieIcfgContainer [2019-11-23 22:11:26,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:11:26,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:11:26,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:11:26,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:11:26,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:11:25" (1/3) ... [2019-11-23 22:11:26,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1524a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:26, skipping insertion in model container [2019-11-23 22:11:26,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:26" (2/3) ... [2019-11-23 22:11:26,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1524a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:26, skipping insertion in model container [2019-11-23 22:11:26,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:26" (3/3) ... [2019-11-23 22:11:26,510 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2019-11-23 22:11:26,519 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:11:26,526 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:11:26,538 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:11:26,562 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:11:26,562 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:11:26,562 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:11:26,563 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:11:26,563 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:11:26,563 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:11:26,563 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:11:26,563 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:11:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-23 22:11:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:11:26,582 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:26,583 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:11:26,583 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:26,588 INFO L82 PathProgramCache]: Analyzing trace with hash 920569802, now seen corresponding path program 1 times [2019-11-23 22:11:26,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:26,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28042419] [2019-11-23 22:11:26,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:26,686 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28042419] [2019-11-23 22:11:26,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:26,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:11:26,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160153931] [2019-11-23 22:11:26,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:11:26,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:26,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:11:26,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:11:26,710 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-11-23 22:11:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:26,727 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2019-11-23 22:11:26,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:11:26,728 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-23 22:11:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:26,739 INFO L225 Difference]: With dead ends: 21 [2019-11-23 22:11:26,739 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 22:11:26,742 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:11:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 22:11:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 22:11:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 22:11:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-11-23 22:11:26,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2019-11-23 22:11:26,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:26,777 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-11-23 22:11:26,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:11:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-11-23 22:11:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:11:26,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:26,778 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:26,778 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:26,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:26,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1539532969, now seen corresponding path program 1 times [2019-11-23 22:11:26,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:26,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849060603] [2019-11-23 22:11:26,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:27,030 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2019-11-23 22:11:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:27,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849060603] [2019-11-23 22:11:27,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:27,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:11:27,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302658811] [2019-11-23 22:11:27,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:11:27,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:27,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:11:27,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:11:27,055 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 4 states. [2019-11-23 22:11:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:27,138 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-23 22:11:27,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:11:27,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-23 22:11:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:27,140 INFO L225 Difference]: With dead ends: 15 [2019-11-23 22:11:27,140 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 22:11:27,141 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:11:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 22:11:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 22:11:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 22:11:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-23 22:11:27,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2019-11-23 22:11:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:27,146 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-23 22:11:27,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:11:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-23 22:11:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:11:27,147 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:27,147 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:27,147 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1067556335, now seen corresponding path program 1 times [2019-11-23 22:11:27,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:27,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656101206] [2019-11-23 22:11:27,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:29,495 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (div c_ULTIMATE.start_main_~b~0 4294967296)) (.cse3 (div c_ULTIMATE.start_main_~a~0 4294967296))) (let ((.cse6 (* 4294967296 .cse3)) (.cse16 (* 4294967296 .cse5))) (let ((.cse2 (+ c_ULTIMATE.start_main_~a~0 .cse16)) (.cse1 (+ .cse6 c_ULTIMATE.start_main_~b~0))) (let ((.cse0 (= .cse2 .cse1))) (or .cse0 (let ((.cse4 (not .cse0))) (and (or (<= .cse1 .cse2) (and (or (and (or (<= .cse3 0) (<= c_ULTIMATE.start_main_~a~0 1)) (or (and .cse4 (<= 1 c_ULTIMATE.start_main_~b~0)) (and .cse0 (<= 0 c_ULTIMATE.start_main_~b~0)) (< 0 .cse3))) (<= .cse3 .cse5)) (or (and .cse0 (<= (+ c_ULTIMATE.start_main_~b~0 1) c_ULTIMATE.start_main_~a~0)) (and .cse4 (<= c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0)) (< .cse5 .cse3)))) .cse4 (let ((.cse20 (div c_ULTIMATE.start_main_~i~0 2))) (let ((.cse9 (* 2 .cse20))) (let ((.cse19 (* .cse20 (- 2))) (.cse18 (= .cse9 c_ULTIMATE.start_main_~i~0)) (.cse17 (* 4294967296 (div c_ULTIMATE.start_main_~i~0 4294967296)))) (let ((.cse7 (+ c_ULTIMATE.start_main_~a~0 .cse16 c_ULTIMATE.start_main_~i~0)) (.cse11 (< c_ULTIMATE.start_main_~i~0 .cse17)) (.cse12 (not .cse18)) (.cse13 (* 4294967296 (div (+ c_ULTIMATE.start_main_~i~0 .cse19 (- 2)) 4294967296))) (.cse8 (* 4294967296 (div (+ c_ULTIMATE.start_main_~i~0 .cse19) 4294967296))) (.cse10 (or (<= .cse17 c_ULTIMATE.start_main_~i~0) .cse18))) (or (< .cse2 .cse1) (< .cse2 (+ .cse6 c_ULTIMATE.start_main_~b~0 1)) (and (<= .cse7 (+ .cse6 c_ULTIMATE.start_main_~b~0 .cse8 .cse9)) .cse10) (and .cse11 .cse12 (<= .cse7 (+ .cse6 .cse13 c_ULTIMATE.start_main_~b~0 .cse9))) (let ((.cse14 (+ .cse3 1))) (and (let ((.cse15 (+ .cse16 c_ULTIMATE.start_main_~i~0))) (or (<= .cse14 0) (and .cse11 .cse12 (<= (+ .cse6 .cse13 c_ULTIMATE.start_main_~b~0 .cse9 1) .cse15)) (and (<= (+ .cse6 c_ULTIMATE.start_main_~b~0 .cse8 .cse9 1) .cse15) .cse10))) (or (< 0 .cse14) (<= 1 c_ULTIMATE.start_main_~a~0)))))))))))))))) is different from false [2019-11-23 22:11:31,529 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 (div c_ULTIMATE.start_main_~b~0 4294967296)) (.cse3 (div c_ULTIMATE.start_main_~a~0 4294967296))) (let ((.cse6 (* 4294967296 .cse3)) (.cse16 (* 4294967296 .cse5))) (let ((.cse2 (+ c_ULTIMATE.start_main_~a~0 .cse16)) (.cse1 (+ .cse6 c_ULTIMATE.start_main_~b~0))) (let ((.cse0 (= .cse2 .cse1))) (or .cse0 (let ((.cse4 (not .cse0))) (and (or (<= .cse1 .cse2) (and (or (and (or (<= .cse3 0) (<= c_ULTIMATE.start_main_~a~0 1)) (or (and .cse4 (<= 1 c_ULTIMATE.start_main_~b~0)) (and .cse0 (<= 0 c_ULTIMATE.start_main_~b~0)) (< 0 .cse3))) (<= .cse3 .cse5)) (or (and .cse0 (<= (+ c_ULTIMATE.start_main_~b~0 1) c_ULTIMATE.start_main_~a~0)) (and .cse4 (<= c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~a~0)) (< .cse5 .cse3)))) .cse4 (let ((.cse20 (div c_ULTIMATE.start_main_~i~0 2))) (let ((.cse9 (* 2 .cse20))) (let ((.cse19 (* .cse20 (- 2))) (.cse18 (= .cse9 c_ULTIMATE.start_main_~i~0)) (.cse17 (* 4294967296 (div c_ULTIMATE.start_main_~i~0 4294967296)))) (let ((.cse7 (+ c_ULTIMATE.start_main_~a~0 .cse16 c_ULTIMATE.start_main_~i~0)) (.cse11 (< c_ULTIMATE.start_main_~i~0 .cse17)) (.cse12 (not .cse18)) (.cse13 (* 4294967296 (div (+ c_ULTIMATE.start_main_~i~0 .cse19 (- 2)) 4294967296))) (.cse8 (* 4294967296 (div (+ c_ULTIMATE.start_main_~i~0 .cse19) 4294967296))) (.cse10 (or (<= .cse17 c_ULTIMATE.start_main_~i~0) .cse18))) (or (< .cse2 .cse1) (< .cse2 (+ .cse6 c_ULTIMATE.start_main_~b~0 1)) (and (<= .cse7 (+ .cse6 c_ULTIMATE.start_main_~b~0 .cse8 .cse9)) .cse10) (and .cse11 .cse12 (<= .cse7 (+ .cse6 .cse13 c_ULTIMATE.start_main_~b~0 .cse9))) (let ((.cse14 (+ .cse3 1))) (and (let ((.cse15 (+ .cse16 c_ULTIMATE.start_main_~i~0))) (or (<= .cse14 0) (and .cse11 .cse12 (<= (+ .cse6 .cse13 c_ULTIMATE.start_main_~b~0 .cse9 1) .cse15)) (and (<= (+ .cse6 c_ULTIMATE.start_main_~b~0 .cse8 .cse9 1) .cse15) .cse10))) (or (< 0 .cse14) (<= 1 c_ULTIMATE.start_main_~a~0)))))))))))))))) is different from true [2019-11-23 22:11:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:31,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656101206] [2019-11-23 22:11:31,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245709395] [2019-11-23 22:11:31,596 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 [2019-11-23 22:11:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:31,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-23 22:11:31,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:31,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:31,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2019-11-23 22:11:31,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186551342] [2019-11-23 22:11:31,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:11:31,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:31,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:11:31,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=64, Unknown=2, NotChecked=16, Total=110 [2019-11-23 22:11:31,749 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 11 states. [2019-11-23 22:11:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:31,848 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-23 22:11:31,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:11:31,850 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2019-11-23 22:11:31,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:31,851 INFO L225 Difference]: With dead ends: 20 [2019-11-23 22:11:31,851 INFO L226 Difference]: Without dead ends: 16 [2019-11-23 22:11:31,852 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=34, Invalid=78, Unknown=2, NotChecked=18, Total=132 [2019-11-23 22:11:31,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-23 22:11:31,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-23 22:11:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 22:11:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-23 22:11:31,856 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 10 [2019-11-23 22:11:31,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:31,857 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-23 22:11:31,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:11:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-23 22:11:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:11:31,858 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:31,867 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:32,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:32,072 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:32,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:32,072 INFO L82 PathProgramCache]: Analyzing trace with hash -387497965, now seen corresponding path program 1 times [2019-11-23 22:11:32,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:32,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373663345] [2019-11-23 22:11:32,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:11:32,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373663345] [2019-11-23 22:11:32,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:32,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:11:32,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026357808] [2019-11-23 22:11:32,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:11:32,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:32,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:11:32,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:11:32,138 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-11-23 22:11:32,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:32,147 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-23 22:11:32,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:11:32,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-23 22:11:32,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:32,149 INFO L225 Difference]: With dead ends: 23 [2019-11-23 22:11:32,149 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 22:11:32,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:11:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 22:11:32,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 22:11:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 22:11:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-23 22:11:32,155 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2019-11-23 22:11:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:32,156 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-23 22:11:32,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:11:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-23 22:11:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:11:32,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:32,157 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:32,157 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2134579945, now seen corresponding path program 2 times [2019-11-23 22:11:32,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:32,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892887739] [2019-11-23 22:11:32,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:34,601 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 79 DAG size of output: 25 [2019-11-23 22:11:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:34,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892887739] [2019-11-23 22:11:34,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859680341] [2019-11-23 22:11:34,682 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 [2019-11-23 22:11:34,714 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:11:34,715 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:11:34,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-23 22:11:34,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:34,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:34,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:34,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-23 22:11:34,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727755555] [2019-11-23 22:11:34,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-23 22:11:34,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:34,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-23 22:11:34,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:11:34,888 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 11 states. [2019-11-23 22:11:34,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:34,990 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-11-23 22:11:34,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:11:34,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-11-23 22:11:34,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:34,991 INFO L225 Difference]: With dead ends: 28 [2019-11-23 22:11:34,991 INFO L226 Difference]: Without dead ends: 17 [2019-11-23 22:11:34,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:11:34,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-23 22:11:34,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-23 22:11:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-23 22:11:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-23 22:11:34,996 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2019-11-23 22:11:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:34,996 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-23 22:11:34,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-23 22:11:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-23 22:11:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-23 22:11:34,997 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:34,997 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:35,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:35,205 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:35,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:35,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1512979537, now seen corresponding path program 3 times [2019-11-23 22:11:35,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:35,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55287205] [2019-11-23 22:11:35,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:35,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55287205] [2019-11-23 22:11:35,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147467684] [2019-11-23 22:11:35,853 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 [2019-11-23 22:11:35,887 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-23 22:11:35,888 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:11:35,889 WARN L253 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-23 22:11:35,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:37,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:37,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2019-11-23 22:11:37,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701734558] [2019-11-23 22:11:37,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-23 22:11:37,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:37,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-23 22:11:37,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-11-23 22:11:37,179 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 18 states. [2019-11-23 22:11:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:37,539 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2019-11-23 22:11:37,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-23 22:11:37,540 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2019-11-23 22:11:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:37,541 INFO L225 Difference]: With dead ends: 45 [2019-11-23 22:11:37,542 INFO L226 Difference]: Without dead ends: 28 [2019-11-23 22:11:37,542 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-11-23 22:11:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-23 22:11:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-11-23 22:11:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 22:11:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-23 22:11:37,554 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2019-11-23 22:11:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:37,554 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-23 22:11:37,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-23 22:11:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-23 22:11:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 22:11:37,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:37,555 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:37,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:37,761 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:37,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:37,761 INFO L82 PathProgramCache]: Analyzing trace with hash -329989927, now seen corresponding path program 1 times [2019-11-23 22:11:37,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:37,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368149859] [2019-11-23 22:11:37,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:37,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368149859] [2019-11-23 22:11:37,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91342196] [2019-11-23 22:11:37,953 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 [2019-11-23 22:11:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:38,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:11:38,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:11:38,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:38,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-11-23 22:11:38,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911544745] [2019-11-23 22:11:38,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 22:11:38,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:38,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 22:11:38,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:11:38,041 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 9 states. [2019-11-23 22:11:38,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:38,135 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-23 22:11:38,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:11:38,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2019-11-23 22:11:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:38,136 INFO L225 Difference]: With dead ends: 35 [2019-11-23 22:11:38,137 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 22:11:38,137 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:11:38,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 22:11:38,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-23 22:11:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 22:11:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-23 22:11:38,141 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 19 [2019-11-23 22:11:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:38,141 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-23 22:11:38,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 22:11:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-23 22:11:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-23 22:11:38,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:38,142 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:38,349 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:38,350 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:38,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:38,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1603113111, now seen corresponding path program 4 times [2019-11-23 22:11:38,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:38,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864326079] [2019-11-23 22:11:38,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:38,657 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2019-11-23 22:11:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:41,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864326079] [2019-11-23 22:11:41,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78387216] [2019-11-23 22:11:41,047 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 [2019-11-23 22:11:41,084 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:11:41,085 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:11:41,086 WARN L253 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 58 conjunts are in the unsatisfiable core [2019-11-23 22:11:41,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:41,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:41,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2019-11-23 22:11:41,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710145216] [2019-11-23 22:11:41,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-23 22:11:41,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:41,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-23 22:11:41,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2019-11-23 22:11:41,635 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 30 states. [2019-11-23 22:11:46,260 WARN L192 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2019-11-23 22:11:50,703 WARN L192 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2019-11-23 22:11:53,262 WARN L192 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 87 DAG size of output: 36 [2019-11-23 22:11:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:53,377 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-23 22:11:53,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-23 22:11:53,378 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 25 [2019-11-23 22:11:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:53,378 INFO L225 Difference]: With dead ends: 31 [2019-11-23 22:11:53,379 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:11:53,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2019-11-23 22:11:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:11:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:11:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:11:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:11:53,381 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-11-23 22:11:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:53,381 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:11:53,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-23 22:11:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:11:53,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:11:53,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:53,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:11:53,598 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:11:53,598 INFO L447 ceAbstractionStarter]: At program point L31(lines 31 33) the Hoare annotation is: true [2019-11-23 22:11:53,598 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 29) no Hoare annotation was computed. [2019-11-23 22:11:53,598 INFO L444 ceAbstractionStarter]: For program point L25-2(lines 10 35) no Hoare annotation was computed. [2019-11-23 22:11:53,599 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 30) no Hoare annotation was computed. [2019-11-23 22:11:53,599 INFO L444 ceAbstractionStarter]: For program point L21-2(lines 10 35) no Hoare annotation was computed. [2019-11-23 22:11:53,599 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:11:53,599 INFO L447 ceAbstractionStarter]: At program point L34(lines 10 35) the Hoare annotation is: true [2019-11-23 22:11:53,599 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:11:53,599 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:11:53,599 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:11:53,600 INFO L444 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-11-23 22:11:53,600 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:11:53,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:11:53 BoogieIcfgContainer [2019-11-23 22:11:53,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:11:53,610 INFO L168 Benchmark]: Toolchain (without parser) took 27751.89 ms. Allocated memory was 140.5 MB in the beginning and 263.2 MB in the end (delta: 122.7 MB). Free memory was 105.4 MB in the beginning and 227.5 MB in the end (delta: -122.1 MB). Peak memory consumption was 586.4 kB. Max. memory is 7.1 GB. [2019-11-23 22:11:53,611 INFO L168 Benchmark]: CDTParser took 1.51 ms. Allocated memory is still 140.5 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-23 22:11:53,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.97 ms. Allocated memory is still 140.5 MB. Free memory was 105.0 MB in the beginning and 95.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:53,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.15 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 95.4 MB in the beginning and 183.8 MB in the end (delta: -88.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:53,613 INFO L168 Benchmark]: Boogie Preprocessor took 17.66 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 182.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:53,614 INFO L168 Benchmark]: RCFGBuilder took 233.53 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 170.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:53,615 INFO L168 Benchmark]: TraceAbstraction took 27103.34 ms. Allocated memory was 204.5 MB in the beginning and 263.2 MB in the end (delta: 58.7 MB). Free memory was 169.9 MB in the beginning and 227.5 MB in the end (delta: -57.6 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:53,619 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.51 ms. Allocated memory is still 140.5 MB. Free memory was 123.7 MB in the beginning and 123.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.97 ms. Allocated memory is still 140.5 MB. Free memory was 105.0 MB in the beginning and 95.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 116.15 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 95.4 MB in the beginning and 183.8 MB in the end (delta: -88.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 17.66 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 182.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.53 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 170.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27103.34 ms. Allocated memory was 204.5 MB in the beginning and 263.2 MB in the end (delta: 58.7 MB). Free memory was 169.9 MB in the beginning and 227.5 MB in the end (delta: -57.6 MB). Peak memory consumption was 1.2 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: 31]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 27.0s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 74 SDslu, 329 SDs, 0 SdLazy, 475 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 23.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 176 ConstructedInterpolants, 4 QuantifiedInterpolants, 50653 SizeOfPredicates, 21 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 25/216 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...