/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:31:43,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:31:43,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:31:43,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:31:44,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-23 23:31:44,038 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:31:44,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:31:44,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:31:44,039 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:31:44,040 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:31:44,040 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:31:44,040 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:31:44,040 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:31:44,040 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:31:44,040 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:31:44,041 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:31:44,041 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:31:44,041 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:31:44,041 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:31:44,041 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:31:44,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:31:44,042 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:31:44,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:31:44,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:31:44,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:31:44,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:31:44,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:31:44,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:31:44,044 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:31:44,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:31:44,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:31:44,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:31:44,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:31:44,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:31:44,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:31:44,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:31:44,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:31:44,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:31:44,046 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:31:44,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:31:44,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:31:44,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:31:44,046 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:31:44,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:31:44,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:31:44,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:31:44,385 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:31:44,385 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:31:44,386 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2019-11-23 23:31:44,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a904b237/c4a467b7fe6144938af23d3c513d2789/FLAG28556eef7 [2019-11-23 23:31:45,037 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:31:45,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2019-11-23 23:31:45,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a904b237/c4a467b7fe6144938af23d3c513d2789/FLAG28556eef7 [2019-11-23 23:31:45,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a904b237/c4a467b7fe6144938af23d3c513d2789 [2019-11-23 23:31:45,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:31:45,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:31:45,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:31:45,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:31:45,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:31:45,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:31:45" (1/1) ... [2019-11-23 23:31:45,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5088ba2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:45, skipping insertion in model container [2019-11-23 23:31:45,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:31:45" (1/1) ... [2019-11-23 23:31:45,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:31:45,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:31:45,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:31:45,934 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:31:46,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:31:46,076 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:31:46,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46 WrapperNode [2019-11-23 23:31:46,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:31:46,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:31:46,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:31:46,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:31:46,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:31:46,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:31:46,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:31:46,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:31:46,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (1/1) ... [2019-11-23 23:31:46,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:31:46,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:31:46,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:31:46,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:31:46,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (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 23:31:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:31:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:31:48,516 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:31:48,517 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 23:31:48,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:31:48 BoogieIcfgContainer [2019-11-23 23:31:48,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:31:48,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:31:48,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:31:48,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:31:48,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:31:45" (1/3) ... [2019-11-23 23:31:48,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96ad98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:31:48, skipping insertion in model container [2019-11-23 23:31:48,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:46" (2/3) ... [2019-11-23 23:31:48,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96ad98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:31:48, skipping insertion in model container [2019-11-23 23:31:48,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:31:48" (3/3) ... [2019-11-23 23:31:48,532 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2019-11-23 23:31:48,543 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:31:48,555 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:31:48,567 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:31:48,601 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:31:48,602 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:31:48,602 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:31:48,602 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:31:48,602 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:31:48,602 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:31:48,603 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:31:48,603 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:31:48,626 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2019-11-23 23:31:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-23 23:31:48,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:48,638 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:48,639 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:48,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:48,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1323242783, now seen corresponding path program 1 times [2019-11-23 23:31:48,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:48,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770345781] [2019-11-23 23:31:48,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:49,078 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 23:31:49,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770345781] [2019-11-23 23:31:49,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:49,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:31:49,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243987311] [2019-11-23 23:31:49,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:31:49,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:49,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:31:49,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:31:49,104 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2019-11-23 23:31:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:49,646 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2019-11-23 23:31:49,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:31:49,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-11-23 23:31:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:49,663 INFO L225 Difference]: With dead ends: 224 [2019-11-23 23:31:49,663 INFO L226 Difference]: Without dead ends: 145 [2019-11-23 23:31:49,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:31:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-23 23:31:49,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2019-11-23 23:31:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-23 23:31:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2019-11-23 23:31:49,721 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2019-11-23 23:31:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:49,722 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2019-11-23 23:31:49,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:31:49,722 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2019-11-23 23:31:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-23 23:31:49,725 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:49,726 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:49,726 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:49,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1129607449, now seen corresponding path program 1 times [2019-11-23 23:31:49,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:49,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711012403] [2019-11-23 23:31:49,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 23:31:49,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711012403] [2019-11-23 23:31:49,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:49,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:31:49,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497916976] [2019-11-23 23:31:49,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:31:49,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:49,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:31:49,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:31:49,891 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand 4 states. [2019-11-23 23:31:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:50,499 INFO L93 Difference]: Finished difference Result 573 states and 1007 transitions. [2019-11-23 23:31:50,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:31:50,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2019-11-23 23:31:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:50,510 INFO L225 Difference]: With dead ends: 573 [2019-11-23 23:31:50,510 INFO L226 Difference]: Without dead ends: 429 [2019-11-23 23:31:50,512 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:31:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-11-23 23:31:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2019-11-23 23:31:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2019-11-23 23:31:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 604 transitions. [2019-11-23 23:31:50,554 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 604 transitions. Word has length 75 [2019-11-23 23:31:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:50,555 INFO L462 AbstractCegarLoop]: Abstraction has 358 states and 604 transitions. [2019-11-23 23:31:50,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:31:50,557 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 604 transitions. [2019-11-23 23:31:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-23 23:31:50,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:50,566 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:50,566 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:50,567 INFO L82 PathProgramCache]: Analyzing trace with hash -917748943, now seen corresponding path program 1 times [2019-11-23 23:31:50,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:50,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472320959] [2019-11-23 23:31:50,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 23:31:50,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472320959] [2019-11-23 23:31:50,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:50,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:31:50,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857201343] [2019-11-23 23:31:50,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:31:50,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:50,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:31:50,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:31:50,734 INFO L87 Difference]: Start difference. First operand 358 states and 604 transitions. Second operand 3 states. [2019-11-23 23:31:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:51,097 INFO L93 Difference]: Finished difference Result 857 states and 1457 transitions. [2019-11-23 23:31:51,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:31:51,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-11-23 23:31:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:51,100 INFO L225 Difference]: With dead ends: 857 [2019-11-23 23:31:51,101 INFO L226 Difference]: Without dead ends: 500 [2019-11-23 23:31:51,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:31:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-23 23:31:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2019-11-23 23:31:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2019-11-23 23:31:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 586 transitions. [2019-11-23 23:31:51,125 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 586 transitions. Word has length 117 [2019-11-23 23:31:51,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:51,126 INFO L462 AbstractCegarLoop]: Abstraction has 358 states and 586 transitions. [2019-11-23 23:31:51,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:31:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 586 transitions. [2019-11-23 23:31:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-23 23:31:51,129 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:51,129 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:51,129 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash 535762683, now seen corresponding path program 1 times [2019-11-23 23:31:51,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:51,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722112548] [2019-11-23 23:31:51,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-23 23:31:51,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722112548] [2019-11-23 23:31:51,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:51,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 23:31:51,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699122330] [2019-11-23 23:31:51,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 23:31:51,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:51,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 23:31:51,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-23 23:31:51,350 INFO L87 Difference]: Start difference. First operand 358 states and 586 transitions. Second operand 5 states. [2019-11-23 23:31:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:51,994 INFO L93 Difference]: Finished difference Result 788 states and 1268 transitions. [2019-11-23 23:31:51,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:31:51,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-11-23 23:31:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:51,998 INFO L225 Difference]: With dead ends: 788 [2019-11-23 23:31:51,998 INFO L226 Difference]: Without dead ends: 431 [2019-11-23 23:31:51,999 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-23 23:31:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-11-23 23:31:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 429. [2019-11-23 23:31:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-11-23 23:31:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 663 transitions. [2019-11-23 23:31:52,018 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 663 transitions. Word has length 121 [2019-11-23 23:31:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:52,018 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 663 transitions. [2019-11-23 23:31:52,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 23:31:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 663 transitions. [2019-11-23 23:31:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-23 23:31:52,021 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:52,021 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:52,022 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:52,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1218207949, now seen corresponding path program 1 times [2019-11-23 23:31:52,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:52,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387636096] [2019-11-23 23:31:52,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-23 23:31:52,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387636096] [2019-11-23 23:31:52,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:52,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:31:52,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899564726] [2019-11-23 23:31:52,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:31:52,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:52,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:31:52,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:31:52,107 INFO L87 Difference]: Start difference. First operand 429 states and 663 transitions. Second operand 3 states. [2019-11-23 23:31:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:52,482 INFO L93 Difference]: Finished difference Result 928 states and 1462 transitions. [2019-11-23 23:31:52,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:31:52,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2019-11-23 23:31:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:52,486 INFO L225 Difference]: With dead ends: 928 [2019-11-23 23:31:52,486 INFO L226 Difference]: Without dead ends: 571 [2019-11-23 23:31:52,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:31:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-11-23 23:31:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-11-23 23:31:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-11-23 23:31:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 841 transitions. [2019-11-23 23:31:52,508 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 841 transitions. Word has length 125 [2019-11-23 23:31:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:52,509 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 841 transitions. [2019-11-23 23:31:52,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:31:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 841 transitions. [2019-11-23 23:31:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-23 23:31:52,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:52,512 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:52,513 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:52,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1424174641, now seen corresponding path program 1 times [2019-11-23 23:31:52,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:52,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280893386] [2019-11-23 23:31:52,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-23 23:31:52,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280893386] [2019-11-23 23:31:52,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:52,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 23:31:52,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621306951] [2019-11-23 23:31:52,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:31:52,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:52,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:31:52,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:31:52,601 INFO L87 Difference]: Start difference. First operand 571 states and 841 transitions. Second operand 4 states. [2019-11-23 23:31:53,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:53,238 INFO L93 Difference]: Finished difference Result 1778 states and 2650 transitions. [2019-11-23 23:31:53,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:31:53,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2019-11-23 23:31:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:53,240 INFO L225 Difference]: With dead ends: 1778 [2019-11-23 23:31:53,240 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 23:31:53,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:31:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 23:31:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 23:31:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 23:31:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 23:31:53,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2019-11-23 23:31:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:53,244 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 23:31:53,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:31:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 23:31:53,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 23:31:53,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 23:31:53,377 INFO L444 ceAbstractionStarter]: For program point L333(lines 333 390) no Hoare annotation was computed. [2019-11-23 23:31:53,377 INFO L444 ceAbstractionStarter]: For program point L102(lines 102 390) no Hoare annotation was computed. [2019-11-23 23:31:53,377 INFO L444 ceAbstractionStarter]: For program point L268(lines 268 390) no Hoare annotation was computed. [2019-11-23 23:31:53,377 INFO L444 ceAbstractionStarter]: For program point L136(lines 136 390) no Hoare annotation was computed. [2019-11-23 23:31:53,377 INFO L444 ceAbstractionStarter]: For program point L203(lines 203 390) no Hoare annotation was computed. [2019-11-23 23:31:53,378 INFO L444 ceAbstractionStarter]: For program point L72(lines 72 390) no Hoare annotation was computed. [2019-11-23 23:31:53,378 INFO L444 ceAbstractionStarter]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2019-11-23 23:31:53,378 INFO L444 ceAbstractionStarter]: For program point L337(lines 337 390) no Hoare annotation was computed. [2019-11-23 23:31:53,378 INFO L444 ceAbstractionStarter]: For program point L238(lines 238 390) no Hoare annotation was computed. [2019-11-23 23:31:53,378 INFO L444 ceAbstractionStarter]: For program point L173(lines 173 390) no Hoare annotation was computed. [2019-11-23 23:31:53,378 INFO L444 ceAbstractionStarter]: For program point L140(lines 140 390) no Hoare annotation was computed. [2019-11-23 23:31:53,378 INFO L444 ceAbstractionStarter]: For program point L372(lines 372 390) no Hoare annotation was computed. [2019-11-23 23:31:53,378 INFO L444 ceAbstractionStarter]: For program point L306(lines 306 390) no Hoare annotation was computed. [2019-11-23 23:31:53,379 INFO L444 ceAbstractionStarter]: For program point L273(lines 273 390) no Hoare annotation was computed. [2019-11-23 23:31:53,379 INFO L444 ceAbstractionStarter]: For program point L108(lines 108 390) no Hoare annotation was computed. [2019-11-23 23:31:53,379 INFO L444 ceAbstractionStarter]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2019-11-23 23:31:53,379 INFO L444 ceAbstractionStarter]: For program point L208(lines 208 390) no Hoare annotation was computed. [2019-11-23 23:31:53,379 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 390) no Hoare annotation was computed. [2019-11-23 23:31:53,380 INFO L444 ceAbstractionStarter]: For program point L473(line 473) no Hoare annotation was computed. [2019-11-23 23:31:53,380 INFO L444 ceAbstractionStarter]: For program point L144(lines 144 390) no Hoare annotation was computed. [2019-11-23 23:31:53,381 INFO L440 ceAbstractionStarter]: At program point L574(lines 30 575) the Hoare annotation is: (let ((.cse0 (not (= ~a16~0 6))) (.cse2 (not (= 14 ~a8~0))) (.cse1 (= ~a21~0 1))) (or (and .cse0 .cse1) (and .cse0 .cse2) (and .cse2 .cse1) (= ~a20~0 1))) [2019-11-23 23:31:53,381 INFO L444 ceAbstractionStarter]: For program point L178(lines 178 390) no Hoare annotation was computed. [2019-11-23 23:31:53,381 INFO L444 ceAbstractionStarter]: For program point L377(lines 377 390) no Hoare annotation was computed. [2019-11-23 23:31:53,381 INFO L444 ceAbstractionStarter]: For program point L278(lines 278 390) no Hoare annotation was computed. [2019-11-23 23:31:53,381 INFO L444 ceAbstractionStarter]: For program point L245(lines 245 390) no Hoare annotation was computed. [2019-11-23 23:31:53,382 INFO L444 ceAbstractionStarter]: For program point L80(lines 80 390) no Hoare annotation was computed. [2019-11-23 23:31:53,382 INFO L444 ceAbstractionStarter]: For program point L345(lines 345 390) no Hoare annotation was computed. [2019-11-23 23:31:53,382 INFO L444 ceAbstractionStarter]: For program point L312(lines 312 390) no Hoare annotation was computed. [2019-11-23 23:31:53,382 INFO L444 ceAbstractionStarter]: For program point L114(lines 114 390) no Hoare annotation was computed. [2019-11-23 23:31:53,382 INFO L447 ceAbstractionStarter]: At program point L577(lines 577 594) the Hoare annotation is: true [2019-11-23 23:31:53,382 INFO L444 ceAbstractionStarter]: For program point L214(lines 214 390) no Hoare annotation was computed. [2019-11-23 23:31:53,382 INFO L444 ceAbstractionStarter]: For program point L148(lines 148 390) no Hoare annotation was computed. [2019-11-23 23:31:53,382 INFO L444 ceAbstractionStarter]: For program point L49(lines 49 390) no Hoare annotation was computed. [2019-11-23 23:31:53,383 INFO L444 ceAbstractionStarter]: For program point L84(lines 84 390) no Hoare annotation was computed. [2019-11-23 23:31:53,383 INFO L444 ceAbstractionStarter]: For program point L382(lines 382 390) no Hoare annotation was computed. [2019-11-23 23:31:53,383 INFO L444 ceAbstractionStarter]: For program point L316(lines 316 390) no Hoare annotation was computed. [2019-11-23 23:31:53,383 INFO L444 ceAbstractionStarter]: For program point L250(lines 250 390) no Hoare annotation was computed. [2019-11-23 23:31:53,383 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 23:31:53,383 INFO L444 ceAbstractionStarter]: For program point L218(lines 218 390) no Hoare annotation was computed. [2019-11-23 23:31:53,383 INFO L444 ceAbstractionStarter]: For program point L152(lines 152 390) no Hoare annotation was computed. [2019-11-23 23:31:53,384 INFO L444 ceAbstractionStarter]: For program point L119(lines 119 390) no Hoare annotation was computed. [2019-11-23 23:31:53,384 INFO L444 ceAbstractionStarter]: For program point L318(lines 318 390) no Hoare annotation was computed. [2019-11-23 23:31:53,384 INFO L444 ceAbstractionStarter]: For program point L186(lines 186 390) no Hoare annotation was computed. [2019-11-23 23:31:53,384 INFO L444 ceAbstractionStarter]: For program point L54(lines 54 390) no Hoare annotation was computed. [2019-11-23 23:31:53,384 INFO L440 ceAbstractionStarter]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (not (= ~a16~0 6))) (.cse2 (not (= 14 ~a8~0))) (.cse1 (= ~a21~0 1))) (or (and .cse0 .cse1) (and .cse0 .cse2) (and .cse2 .cse1) (= ~a20~0 1))) [2019-11-23 23:31:53,384 INFO L444 ceAbstractionStarter]: For program point L286(lines 286 390) no Hoare annotation was computed. [2019-11-23 23:31:53,384 INFO L444 ceAbstractionStarter]: For program point L353(lines 353 390) no Hoare annotation was computed. [2019-11-23 23:31:53,385 INFO L444 ceAbstractionStarter]: For program point L189(lines 189 390) no Hoare annotation was computed. [2019-11-23 23:31:53,385 INFO L444 ceAbstractionStarter]: For program point L355(lines 355 390) no Hoare annotation was computed. [2019-11-23 23:31:53,385 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 23:31:53,385 INFO L444 ceAbstractionStarter]: For program point L256(lines 256 390) no Hoare annotation was computed. [2019-11-23 23:31:53,385 INFO L444 ceAbstractionStarter]: For program point L223(lines 223 390) no Hoare annotation was computed. [2019-11-23 23:31:53,385 INFO L444 ceAbstractionStarter]: For program point L124(lines 124 390) no Hoare annotation was computed. [2019-11-23 23:31:53,385 INFO L444 ceAbstractionStarter]: For program point L92(lines 92 390) no Hoare annotation was computed. [2019-11-23 23:31:53,386 INFO L444 ceAbstractionStarter]: For program point L588(line 588) no Hoare annotation was computed. [2019-11-23 23:31:53,386 INFO L444 ceAbstractionStarter]: For program point L324(lines 324 390) no Hoare annotation was computed. [2019-11-23 23:31:53,386 INFO L444 ceAbstractionStarter]: For program point L292(lines 292 390) no Hoare annotation was computed. [2019-11-23 23:31:53,386 INFO L444 ceAbstractionStarter]: For program point L160(lines 160 390) no Hoare annotation was computed. [2019-11-23 23:31:53,386 INFO L444 ceAbstractionStarter]: For program point L194(lines 194 390) no Hoare annotation was computed. [2019-11-23 23:31:53,386 INFO L444 ceAbstractionStarter]: For program point L62(lines 62 390) no Hoare annotation was computed. [2019-11-23 23:31:53,386 INFO L444 ceAbstractionStarter]: For program point L261(lines 261 390) no Hoare annotation was computed. [2019-11-23 23:31:53,386 INFO L444 ceAbstractionStarter]: For program point L129(lines 129 390) no Hoare annotation was computed. [2019-11-23 23:31:53,387 INFO L444 ceAbstractionStarter]: For program point L361(lines 361 390) no Hoare annotation was computed. [2019-11-23 23:31:53,387 INFO L444 ceAbstractionStarter]: For program point L97(lines 97 390) no Hoare annotation was computed. [2019-11-23 23:31:53,387 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 390) no Hoare annotation was computed. [2019-11-23 23:31:53,387 INFO L444 ceAbstractionStarter]: For program point L329(lines 329 390) no Hoare annotation was computed. [2019-11-23 23:31:53,387 INFO L444 ceAbstractionStarter]: For program point L197(lines 197 390) no Hoare annotation was computed. [2019-11-23 23:31:53,387 INFO L444 ceAbstractionStarter]: For program point L65(lines 65 390) no Hoare annotation was computed. [2019-11-23 23:31:53,388 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 473) no Hoare annotation was computed. [2019-11-23 23:31:53,388 INFO L444 ceAbstractionStarter]: For program point L363(lines 363 390) no Hoare annotation was computed. [2019-11-23 23:31:53,388 INFO L444 ceAbstractionStarter]: For program point L231(lines 231 390) no Hoare annotation was computed. [2019-11-23 23:31:53,388 INFO L444 ceAbstractionStarter]: For program point L165(lines 165 390) no Hoare annotation was computed. [2019-11-23 23:31:53,388 INFO L444 ceAbstractionStarter]: For program point L265(lines 265 390) no Hoare annotation was computed. [2019-11-23 23:31:53,388 INFO L444 ceAbstractionStarter]: For program point L365(lines 365 390) no Hoare annotation was computed. [2019-11-23 23:31:53,389 INFO L444 ceAbstractionStarter]: For program point L299(lines 299 390) no Hoare annotation was computed. [2019-11-23 23:31:53,389 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 390) no Hoare annotation was computed. [2019-11-23 23:31:53,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:31:53 BoogieIcfgContainer [2019-11-23 23:31:53,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 23:31:53,410 INFO L168 Benchmark]: Toolchain (without parser) took 8108.58 ms. Allocated memory was 138.9 MB in the beginning and 328.2 MB in the end (delta: 189.3 MB). Free memory was 101.8 MB in the beginning and 186.2 MB in the end (delta: -84.4 MB). Peak memory consumption was 104.9 MB. Max. memory is 7.1 GB. [2019-11-23 23:31:53,411 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-23 23:31:53,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.07 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 101.6 MB in the beginning and 167.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2019-11-23 23:31:53,413 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.66 ms. Allocated memory is still 204.5 MB. Free memory was 167.1 MB in the beginning and 161.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2019-11-23 23:31:53,414 INFO L168 Benchmark]: Boogie Preprocessor took 94.52 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 156.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-11-23 23:31:53,415 INFO L168 Benchmark]: RCFGBuilder took 2242.43 ms. Allocated memory was 204.5 MB in the beginning and 248.5 MB in the end (delta: 44.0 MB). Free memory was 156.2 MB in the beginning and 198.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. [2019-11-23 23:31:53,416 INFO L168 Benchmark]: TraceAbstraction took 4887.42 ms. Allocated memory was 248.5 MB in the beginning and 328.2 MB in the end (delta: 79.7 MB). Free memory was 196.3 MB in the beginning and 186.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2019-11-23 23:31:53,421 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.07 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 101.6 MB in the beginning and 167.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 103.66 ms. Allocated memory is still 204.5 MB. Free memory was 167.1 MB in the beginning and 161.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.52 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 156.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2242.43 ms. Allocated memory was 204.5 MB in the beginning and 248.5 MB in the end (delta: 44.0 MB). Free memory was 156.2 MB in the beginning and 198.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4887.42 ms. Allocated memory was 248.5 MB in the beginning and 328.2 MB in the end (delta: 79.7 MB). Free memory was 196.3 MB in the beginning and 186.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 473]: 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: 30]: Loop Invariant Derived loop invariant: (((!(a16 == 6) && a21 == 1) || (!(a16 == 6) && !(14 == a8))) || (!(14 == a8) && a21 == 1)) || a20 == 1 - InvariantResult [Line: 577]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((!(a16 == 6) && a21 == 1) || (!(a16 == 6) && !(14 == a8))) || (!(14 == a8) && a21 == 1)) || a20 == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Result: SAFE, OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 201 SDtfs, 625 SDslu, 37 SDs, 0 SdLazy, 1740 SolverSat, 527 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 215 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 59 HoareAnnotationTreeSize, 3 FomulaSimplifications, 804 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 643 NumberOfCodeBlocks, 643 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 637 ConstructedInterpolants, 0 QuantifiedInterpolants, 141871 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 283/283 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...