/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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:30:04,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:30:04,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:30:04,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 23:30:04,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 23:30:04,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 23:30:04,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 23:30:04,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 23:30:04,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 23:30:04,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 23:30:04,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 23:30:04,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 23:30:04,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:30:04,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:30:04,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:30:04,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:30:04,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:30:04,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:30:04,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:30:04,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:30:04,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:30:04,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:30:04,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:30:04,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:30:04,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:30:04,847 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 23:30:04,880 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:30:04,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:30:04,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:30:04,881 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:30:04,881 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:30:04,881 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:30:04,882 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:30:04,884 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:30:04,884 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:30:04,884 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:30:04,884 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:30:04,885 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:30:04,885 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:30:04,885 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:30:04,885 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:30:04,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:30:04,886 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:30:04,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:30:04,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:30:04,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:30:04,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:30:04,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:30:04,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:30:04,890 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:30:04,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:30:04,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:30:04,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:30:04,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:30:04,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:30:04,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:30:04,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:30:04,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:30:04,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:30:04,892 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:30:04,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:30:04,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:30:04,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:30:04,893 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:30:05,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:30:05,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:30:05,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:30:05,183 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:30:05,184 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:30:05,184 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2019-11-23 23:30:05,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a9c34f8/7f50bc7c07254affbd1b29830209ef96/FLAG1d7f9f439 [2019-11-23 23:30:05,824 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:30:05,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2019-11-23 23:30:05,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a9c34f8/7f50bc7c07254affbd1b29830209ef96/FLAG1d7f9f439 [2019-11-23 23:30:06,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0a9c34f8/7f50bc7c07254affbd1b29830209ef96 [2019-11-23 23:30:06,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:30:06,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:30:06,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:30:06,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:30:06,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:30:06,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:06,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bcc01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06, skipping insertion in model container [2019-11-23 23:30:06,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:06,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:30:06,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:30:06,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:30:06,738 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:30:06,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:30:06,895 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:30:06,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06 WrapperNode [2019-11-23 23:30:06,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:30:06,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:30:06,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:30:06,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:30:06,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:06,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:06,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:30:06,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:30:06,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:30:06,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:30:06,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:06,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:06,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:06,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:07,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:07,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:07,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (1/1) ... [2019-11-23 23:30:07,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:30:07,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:30:07,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:30:07,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:30:07,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (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 23:30:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:30:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:30:09,144 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:30:09,144 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 23:30:09,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:30:09 BoogieIcfgContainer [2019-11-23 23:30:09,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:30:09,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:30:09,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:30:09,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:30:09,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:30:06" (1/3) ... [2019-11-23 23:30:09,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfc3cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:30:09, skipping insertion in model container [2019-11-23 23:30:09,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:30:06" (2/3) ... [2019-11-23 23:30:09,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfc3cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:30:09, skipping insertion in model container [2019-11-23 23:30:09,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:30:09" (3/3) ... [2019-11-23 23:30:09,158 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2019-11-23 23:30:09,168 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:30:09,176 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:30:09,187 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:30:09,219 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:30:09,219 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:30:09,219 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:30:09,219 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:30:09,219 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:30:09,220 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:30:09,220 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:30:09,220 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:30:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2019-11-23 23:30:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-23 23:30:09,245 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:09,246 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 23:30:09,247 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:09,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:09,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1323234201, now seen corresponding path program 1 times [2019-11-23 23:30:09,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:09,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790031135] [2019-11-23 23:30:09,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:09,628 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 23:30:09,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790031135] [2019-11-23 23:30:09,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:30:09,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:30:09,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847457833] [2019-11-23 23:30:09,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:30:09,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:09,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:30:09,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:30:09,655 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2019-11-23 23:30:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:10,465 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2019-11-23 23:30:10,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:30:10,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2019-11-23 23:30:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:10,482 INFO L225 Difference]: With dead ends: 297 [2019-11-23 23:30:10,482 INFO L226 Difference]: Without dead ends: 216 [2019-11-23 23:30:10,486 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 23:30:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-11-23 23:30:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2019-11-23 23:30:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-11-23 23:30:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 378 transitions. [2019-11-23 23:30:10,539 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 378 transitions. Word has length 71 [2019-11-23 23:30:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:10,540 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 378 transitions. [2019-11-23 23:30:10,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:30:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 378 transitions. [2019-11-23 23:30:10,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-23 23:30:10,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:10,548 INFO L410 BasicCegarLoop]: trace histogram [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, 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 23:30:10,548 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash 585783519, now seen corresponding path program 1 times [2019-11-23 23:30:10,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:10,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907511337] [2019-11-23 23:30:10,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:30:10,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907511337] [2019-11-23 23:30:10,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:30:10,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:30:10,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937212986] [2019-11-23 23:30:10,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:30:10,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:10,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:30:10,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:30:10,635 INFO L87 Difference]: Start difference. First operand 216 states and 378 transitions. Second operand 4 states. [2019-11-23 23:30:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:11,075 INFO L93 Difference]: Finished difference Result 644 states and 1131 transitions. [2019-11-23 23:30:11,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:30:11,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2019-11-23 23:30:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:11,080 INFO L225 Difference]: With dead ends: 644 [2019-11-23 23:30:11,080 INFO L226 Difference]: Without dead ends: 429 [2019-11-23 23:30:11,082 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 23:30:11,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-11-23 23:30:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2019-11-23 23:30:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-11-23 23:30:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 705 transitions. [2019-11-23 23:30:11,125 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 705 transitions. Word has length 76 [2019-11-23 23:30:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:11,126 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 705 transitions. [2019-11-23 23:30:11,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:30:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 705 transitions. [2019-11-23 23:30:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-23 23:30:11,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:11,134 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:30:11,135 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:11,140 INFO L82 PathProgramCache]: Analyzing trace with hash 928590825, now seen corresponding path program 1 times [2019-11-23 23:30:11,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:11,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712877066] [2019-11-23 23:30:11,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 23:30:11,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712877066] [2019-11-23 23:30:11,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:30:11,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:30:11,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899967910] [2019-11-23 23:30:11,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:30:11,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:11,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:30:11,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:30:11,266 INFO L87 Difference]: Start difference. First operand 429 states and 705 transitions. Second operand 3 states. [2019-11-23 23:30:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:11,633 INFO L93 Difference]: Finished difference Result 1070 states and 1785 transitions. [2019-11-23 23:30:11,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:30:11,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2019-11-23 23:30:11,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:11,638 INFO L225 Difference]: With dead ends: 1070 [2019-11-23 23:30:11,638 INFO L226 Difference]: Without dead ends: 642 [2019-11-23 23:30:11,641 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 23:30:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-23 23:30:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 500. [2019-11-23 23:30:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2019-11-23 23:30:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 825 transitions. [2019-11-23 23:30:11,663 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 825 transitions. Word has length 97 [2019-11-23 23:30:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:11,664 INFO L462 AbstractCegarLoop]: Abstraction has 500 states and 825 transitions. [2019-11-23 23:30:11,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:30:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 825 transitions. [2019-11-23 23:30:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-23 23:30:11,670 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:11,671 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:30:11,671 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:11,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:11,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1330793460, now seen corresponding path program 1 times [2019-11-23 23:30:11,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:11,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651609799] [2019-11-23 23:30:11,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-11-23 23:30:11,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651609799] [2019-11-23 23:30:11,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:30:11,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:30:11,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099737526] [2019-11-23 23:30:11,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:30:11,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:30:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:30:11,740 INFO L87 Difference]: Start difference. First operand 500 states and 825 transitions. Second operand 3 states. [2019-11-23 23:30:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:12,104 INFO L93 Difference]: Finished difference Result 1212 states and 1976 transitions. [2019-11-23 23:30:12,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:30:12,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2019-11-23 23:30:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:12,109 INFO L225 Difference]: With dead ends: 1212 [2019-11-23 23:30:12,109 INFO L226 Difference]: Without dead ends: 713 [2019-11-23 23:30:12,111 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 23:30:12,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2019-11-23 23:30:12,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 571. [2019-11-23 23:30:12,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-11-23 23:30:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 889 transitions. [2019-11-23 23:30:12,130 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 889 transitions. Word has length 133 [2019-11-23 23:30:12,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:12,131 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 889 transitions. [2019-11-23 23:30:12,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:30:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 889 transitions. [2019-11-23 23:30:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-23 23:30:12,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:12,135 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:30:12,135 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash -573611104, now seen corresponding path program 1 times [2019-11-23 23:30:12,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:12,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174752508] [2019-11-23 23:30:12,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-11-23 23:30:12,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174752508] [2019-11-23 23:30:12,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:30:12,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:30:12,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997511620] [2019-11-23 23:30:12,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:30:12,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:12,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:30:12,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:30:12,318 INFO L87 Difference]: Start difference. First operand 571 states and 889 transitions. Second operand 4 states. [2019-11-23 23:30:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:12,818 INFO L93 Difference]: Finished difference Result 1229 states and 1883 transitions. [2019-11-23 23:30:12,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 23:30:12,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2019-11-23 23:30:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:12,822 INFO L225 Difference]: With dead ends: 1229 [2019-11-23 23:30:12,822 INFO L226 Difference]: Without dead ends: 659 [2019-11-23 23:30:12,823 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 23:30:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-11-23 23:30:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 642. [2019-11-23 23:30:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-23 23:30:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 966 transitions. [2019-11-23 23:30:12,840 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 966 transitions. Word has length 141 [2019-11-23 23:30:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:12,841 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 966 transitions. [2019-11-23 23:30:12,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:30:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 966 transitions. [2019-11-23 23:30:12,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-23 23:30:12,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:12,844 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:30:12,844 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:12,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:12,845 INFO L82 PathProgramCache]: Analyzing trace with hash 925212632, now seen corresponding path program 1 times [2019-11-23 23:30:12,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:12,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140868089] [2019-11-23 23:30:12,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-11-23 23:30:12,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140868089] [2019-11-23 23:30:12,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:30:12,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:30:12,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561183556] [2019-11-23 23:30:12,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:30:12,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:12,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:30:12,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:30:12,979 INFO L87 Difference]: Start difference. First operand 642 states and 966 transitions. Second operand 4 states. [2019-11-23 23:30:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:13,537 INFO L93 Difference]: Finished difference Result 1567 states and 2365 transitions. [2019-11-23 23:30:13,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:30:13,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-11-23 23:30:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:13,543 INFO L225 Difference]: With dead ends: 1567 [2019-11-23 23:30:13,543 INFO L226 Difference]: Without dead ends: 997 [2019-11-23 23:30:13,545 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 23:30:13,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2019-11-23 23:30:13,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2019-11-23 23:30:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2019-11-23 23:30:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1138 transitions. [2019-11-23 23:30:13,564 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1138 transitions. Word has length 145 [2019-11-23 23:30:13,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:13,564 INFO L462 AbstractCegarLoop]: Abstraction has 784 states and 1138 transitions. [2019-11-23 23:30:13,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:30:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1138 transitions. [2019-11-23 23:30:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-23 23:30:13,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:13,568 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:30:13,568 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:13,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1683943653, now seen corresponding path program 1 times [2019-11-23 23:30:13,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:13,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134276192] [2019-11-23 23:30:13,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-11-23 23:30:13,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134276192] [2019-11-23 23:30:13,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:30:13,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-23 23:30:13,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412285267] [2019-11-23 23:30:13,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 23:30:13,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:13,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 23:30:13,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-11-23 23:30:13,748 INFO L87 Difference]: Start difference. First operand 784 states and 1138 transitions. Second operand 8 states. [2019-11-23 23:30:14,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:14,591 INFO L93 Difference]: Finished difference Result 1742 states and 2534 transitions. [2019-11-23 23:30:14,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 23:30:14,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 159 [2019-11-23 23:30:14,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:14,596 INFO L225 Difference]: With dead ends: 1742 [2019-11-23 23:30:14,597 INFO L226 Difference]: Without dead ends: 1030 [2019-11-23 23:30:14,598 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-11-23 23:30:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2019-11-23 23:30:14,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 926. [2019-11-23 23:30:14,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2019-11-23 23:30:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1316 transitions. [2019-11-23 23:30:14,621 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1316 transitions. Word has length 159 [2019-11-23 23:30:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:14,623 INFO L462 AbstractCegarLoop]: Abstraction has 926 states and 1316 transitions. [2019-11-23 23:30:14,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 23:30:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1316 transitions. [2019-11-23 23:30:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-23 23:30:14,627 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:14,627 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:30:14,627 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:14,628 INFO L82 PathProgramCache]: Analyzing trace with hash 311590294, now seen corresponding path program 1 times [2019-11-23 23:30:14,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:14,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311663644] [2019-11-23 23:30:14,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-11-23 23:30:14,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311663644] [2019-11-23 23:30:14,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:30:14,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 23:30:14,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819111361] [2019-11-23 23:30:14,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:30:14,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:14,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:30:14,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:30:14,757 INFO L87 Difference]: Start difference. First operand 926 states and 1316 transitions. Second operand 4 states. [2019-11-23 23:30:15,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:15,232 INFO L93 Difference]: Finished difference Result 2277 states and 3219 transitions. [2019-11-23 23:30:15,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:30:15,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-11-23 23:30:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:15,239 INFO L225 Difference]: With dead ends: 2277 [2019-11-23 23:30:15,239 INFO L226 Difference]: Without dead ends: 1068 [2019-11-23 23:30:15,241 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 23:30:15,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2019-11-23 23:30:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2019-11-23 23:30:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2019-11-23 23:30:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1072 transitions. [2019-11-23 23:30:15,263 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1072 transitions. Word has length 162 [2019-11-23 23:30:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:15,264 INFO L462 AbstractCegarLoop]: Abstraction has 926 states and 1072 transitions. [2019-11-23 23:30:15,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:30:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1072 transitions. [2019-11-23 23:30:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-23 23:30:15,267 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:30:15,267 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1] [2019-11-23 23:30:15,268 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:30:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:30:15,268 INFO L82 PathProgramCache]: Analyzing trace with hash -114222837, now seen corresponding path program 1 times [2019-11-23 23:30:15,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:30:15,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403599044] [2019-11-23 23:30:15,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:30:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 205 proven. 27 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-23 23:30:15,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403599044] [2019-11-23 23:30:15,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154403780] [2019-11-23 23:30:15,505 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 23:30:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:30:15,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 23:30:15,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:30:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-11-23 23:30:15,780 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:30:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-11-23 23:30:15,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 23:30:15,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2019-11-23 23:30:15,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024668268] [2019-11-23 23:30:15,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:30:15,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:30:15,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:30:15,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-23 23:30:15,860 INFO L87 Difference]: Start difference. First operand 926 states and 1072 transitions. Second operand 3 states. [2019-11-23 23:30:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:30:16,111 INFO L93 Difference]: Finished difference Result 926 states and 1072 transitions. [2019-11-23 23:30:16,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:30:16,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-11-23 23:30:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:30:16,113 INFO L225 Difference]: With dead ends: 926 [2019-11-23 23:30:16,113 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 23:30:16,114 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-23 23:30:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 23:30:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 23:30:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 23:30:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 23:30:16,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 192 [2019-11-23 23:30:16,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:30:16,116 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 23:30:16,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:30:16,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 23:30:16,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 23:30:16,321 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:30:16,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 23:30:16,464 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2019-11-23 23:30:16,573 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2019-11-23 23:30:16,700 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 21 [2019-11-23 23:30:16,821 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 21 [2019-11-23 23:30:16,824 INFO L444 ceAbstractionStarter]: For program point L333(lines 333 390) no Hoare annotation was computed. [2019-11-23 23:30:16,824 INFO L444 ceAbstractionStarter]: For program point L102(lines 102 390) no Hoare annotation was computed. [2019-11-23 23:30:16,825 INFO L444 ceAbstractionStarter]: For program point L268(lines 268 390) no Hoare annotation was computed. [2019-11-23 23:30:16,825 INFO L444 ceAbstractionStarter]: For program point L136(lines 136 390) no Hoare annotation was computed. [2019-11-23 23:30:16,825 INFO L444 ceAbstractionStarter]: For program point L203(lines 203 390) no Hoare annotation was computed. [2019-11-23 23:30:16,825 INFO L444 ceAbstractionStarter]: For program point L72(lines 72 390) no Hoare annotation was computed. [2019-11-23 23:30:16,825 INFO L444 ceAbstractionStarter]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2019-11-23 23:30:16,825 INFO L444 ceAbstractionStarter]: For program point L337(lines 337 390) no Hoare annotation was computed. [2019-11-23 23:30:16,825 INFO L444 ceAbstractionStarter]: For program point L238(lines 238 390) no Hoare annotation was computed. [2019-11-23 23:30:16,826 INFO L444 ceAbstractionStarter]: For program point L173(lines 173 390) no Hoare annotation was computed. [2019-11-23 23:30:16,830 INFO L444 ceAbstractionStarter]: For program point L140(lines 140 390) no Hoare annotation was computed. [2019-11-23 23:30:16,830 INFO L444 ceAbstractionStarter]: For program point L372(lines 372 390) no Hoare annotation was computed. [2019-11-23 23:30:16,830 INFO L444 ceAbstractionStarter]: For program point L306(lines 306 390) no Hoare annotation was computed. [2019-11-23 23:30:16,830 INFO L444 ceAbstractionStarter]: For program point L273(lines 273 390) no Hoare annotation was computed. [2019-11-23 23:30:16,830 INFO L444 ceAbstractionStarter]: For program point L108(lines 108 390) no Hoare annotation was computed. [2019-11-23 23:30:16,830 INFO L444 ceAbstractionStarter]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2019-11-23 23:30:16,830 INFO L444 ceAbstractionStarter]: For program point L208(lines 208 390) no Hoare annotation was computed. [2019-11-23 23:30:16,831 INFO L444 ceAbstractionStarter]: For program point L43(lines 43 390) no Hoare annotation was computed. [2019-11-23 23:30:16,836 INFO L444 ceAbstractionStarter]: For program point L506(line 506) no Hoare annotation was computed. [2019-11-23 23:30:16,836 INFO L444 ceAbstractionStarter]: For program point L144(lines 144 390) no Hoare annotation was computed. [2019-11-23 23:30:16,836 INFO L440 ceAbstractionStarter]: At program point L574(lines 30 575) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1))) (or (and (<= ~a21~0 0) (= 13 ~a8~0)) (and (not (= ~a16~0 6)) .cse0) (and .cse0 (= 15 ~a8~0)) (and (= ~a17~0 1) .cse0))) [2019-11-23 23:30:16,837 INFO L444 ceAbstractionStarter]: For program point L178(lines 178 390) no Hoare annotation was computed. [2019-11-23 23:30:16,837 INFO L444 ceAbstractionStarter]: For program point L377(lines 377 390) no Hoare annotation was computed. [2019-11-23 23:30:16,837 INFO L444 ceAbstractionStarter]: For program point L278(lines 278 390) no Hoare annotation was computed. [2019-11-23 23:30:16,837 INFO L444 ceAbstractionStarter]: For program point L245(lines 245 390) no Hoare annotation was computed. [2019-11-23 23:30:16,837 INFO L444 ceAbstractionStarter]: For program point L80(lines 80 390) no Hoare annotation was computed. [2019-11-23 23:30:16,837 INFO L444 ceAbstractionStarter]: For program point L345(lines 345 390) no Hoare annotation was computed. [2019-11-23 23:30:16,837 INFO L444 ceAbstractionStarter]: For program point L312(lines 312 390) no Hoare annotation was computed. [2019-11-23 23:30:16,837 INFO L444 ceAbstractionStarter]: For program point L114(lines 114 390) no Hoare annotation was computed. [2019-11-23 23:30:16,838 INFO L447 ceAbstractionStarter]: At program point L577(lines 577 594) the Hoare annotation is: true [2019-11-23 23:30:16,838 INFO L444 ceAbstractionStarter]: For program point L214(lines 214 390) no Hoare annotation was computed. [2019-11-23 23:30:16,838 INFO L444 ceAbstractionStarter]: For program point L148(lines 148 390) no Hoare annotation was computed. [2019-11-23 23:30:16,838 INFO L444 ceAbstractionStarter]: For program point L49(lines 49 390) no Hoare annotation was computed. [2019-11-23 23:30:16,838 INFO L444 ceAbstractionStarter]: For program point L84(lines 84 390) no Hoare annotation was computed. [2019-11-23 23:30:16,838 INFO L444 ceAbstractionStarter]: For program point L382(lines 382 390) no Hoare annotation was computed. [2019-11-23 23:30:16,838 INFO L444 ceAbstractionStarter]: For program point L316(lines 316 390) no Hoare annotation was computed. [2019-11-23 23:30:16,838 INFO L444 ceAbstractionStarter]: For program point L250(lines 250 390) no Hoare annotation was computed. [2019-11-23 23:30:16,838 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 23:30:16,839 INFO L444 ceAbstractionStarter]: For program point L218(lines 218 390) no Hoare annotation was computed. [2019-11-23 23:30:16,841 INFO L444 ceAbstractionStarter]: For program point L152(lines 152 390) no Hoare annotation was computed. [2019-11-23 23:30:16,841 INFO L444 ceAbstractionStarter]: For program point L119(lines 119 390) no Hoare annotation was computed. [2019-11-23 23:30:16,841 INFO L444 ceAbstractionStarter]: For program point L318(lines 318 390) no Hoare annotation was computed. [2019-11-23 23:30:16,841 INFO L444 ceAbstractionStarter]: For program point L186(lines 186 390) no Hoare annotation was computed. [2019-11-23 23:30:16,841 INFO L444 ceAbstractionStarter]: For program point L54(lines 54 390) no Hoare annotation was computed. [2019-11-23 23:30:16,841 INFO L440 ceAbstractionStarter]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1))) (or (and (<= ~a21~0 0) (= 13 ~a8~0)) (and (not (= ~a16~0 6)) .cse0) (and .cse0 (= 15 ~a8~0)) (and (= ~a17~0 1) .cse0))) [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point L286(lines 286 390) no Hoare annotation was computed. [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point L353(lines 353 390) no Hoare annotation was computed. [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point L189(lines 189 390) no Hoare annotation was computed. [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point L355(lines 355 390) no Hoare annotation was computed. [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point L256(lines 256 390) no Hoare annotation was computed. [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point L223(lines 223 390) no Hoare annotation was computed. [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point L124(lines 124 390) no Hoare annotation was computed. [2019-11-23 23:30:16,842 INFO L444 ceAbstractionStarter]: For program point L92(lines 92 390) no Hoare annotation was computed. [2019-11-23 23:30:16,843 INFO L444 ceAbstractionStarter]: For program point L588(line 588) no Hoare annotation was computed. [2019-11-23 23:30:16,843 INFO L444 ceAbstractionStarter]: For program point L324(lines 324 390) no Hoare annotation was computed. [2019-11-23 23:30:16,843 INFO L444 ceAbstractionStarter]: For program point L292(lines 292 390) no Hoare annotation was computed. [2019-11-23 23:30:16,843 INFO L444 ceAbstractionStarter]: For program point L160(lines 160 390) no Hoare annotation was computed. [2019-11-23 23:30:16,843 INFO L444 ceAbstractionStarter]: For program point L194(lines 194 390) no Hoare annotation was computed. [2019-11-23 23:30:16,843 INFO L444 ceAbstractionStarter]: For program point L62(lines 62 390) no Hoare annotation was computed. [2019-11-23 23:30:16,843 INFO L444 ceAbstractionStarter]: For program point L261(lines 261 390) no Hoare annotation was computed. [2019-11-23 23:30:16,843 INFO L444 ceAbstractionStarter]: For program point L129(lines 129 390) no Hoare annotation was computed. [2019-11-23 23:30:16,844 INFO L444 ceAbstractionStarter]: For program point L361(lines 361 390) no Hoare annotation was computed. [2019-11-23 23:30:16,847 INFO L444 ceAbstractionStarter]: For program point L97(lines 97 390) no Hoare annotation was computed. [2019-11-23 23:30:16,847 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 390) no Hoare annotation was computed. [2019-11-23 23:30:16,847 INFO L444 ceAbstractionStarter]: For program point L329(lines 329 390) no Hoare annotation was computed. [2019-11-23 23:30:16,847 INFO L444 ceAbstractionStarter]: For program point L197(lines 197 390) no Hoare annotation was computed. [2019-11-23 23:30:16,847 INFO L444 ceAbstractionStarter]: For program point L65(lines 65 390) no Hoare annotation was computed. [2019-11-23 23:30:16,848 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 506) no Hoare annotation was computed. [2019-11-23 23:30:16,848 INFO L444 ceAbstractionStarter]: For program point L363(lines 363 390) no Hoare annotation was computed. [2019-11-23 23:30:16,848 INFO L444 ceAbstractionStarter]: For program point L231(lines 231 390) no Hoare annotation was computed. [2019-11-23 23:30:16,848 INFO L444 ceAbstractionStarter]: For program point L165(lines 165 390) no Hoare annotation was computed. [2019-11-23 23:30:16,848 INFO L444 ceAbstractionStarter]: For program point L265(lines 265 390) no Hoare annotation was computed. [2019-11-23 23:30:16,848 INFO L444 ceAbstractionStarter]: For program point L365(lines 365 390) no Hoare annotation was computed. [2019-11-23 23:30:16,848 INFO L444 ceAbstractionStarter]: For program point L299(lines 299 390) no Hoare annotation was computed. [2019-11-23 23:30:16,848 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 390) no Hoare annotation was computed. [2019-11-23 23:30:16,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:30:16 BoogieIcfgContainer [2019-11-23 23:30:16,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 23:30:16,876 INFO L168 Benchmark]: Toolchain (without parser) took 10713.72 ms. Allocated memory was 138.9 MB in the beginning and 380.1 MB in the end (delta: 241.2 MB). Free memory was 101.9 MB in the beginning and 276.8 MB in the end (delta: -175.0 MB). Peak memory consumption was 260.2 MB. Max. memory is 7.1 GB. [2019-11-23 23:30:16,877 INFO L168 Benchmark]: CDTParser took 0.18 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: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-23 23:30:16,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.22 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 163.7 MB in the end (delta: -62.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2019-11-23 23:30:16,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.56 ms. Allocated memory is still 203.4 MB. Free memory was 163.7 MB in the beginning and 158.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-11-23 23:30:16,884 INFO L168 Benchmark]: Boogie Preprocessor took 65.86 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 153.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2019-11-23 23:30:16,885 INFO L168 Benchmark]: RCFGBuilder took 2101.48 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 153.5 MB in the beginning and 196.9 MB in the end (delta: -43.4 MB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. [2019-11-23 23:30:16,891 INFO L168 Benchmark]: TraceAbstraction took 7725.15 ms. Allocated memory was 249.0 MB in the beginning and 380.1 MB in the end (delta: 131.1 MB). Free memory was 196.9 MB in the beginning and 276.8 MB in the end (delta: -79.9 MB). Peak memory consumption was 245.2 MB. Max. memory is 7.1 GB. [2019-11-23 23:30:16,899 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.22 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 163.7 MB in the end (delta: -62.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 81.56 ms. Allocated memory is still 203.4 MB. Free memory was 163.7 MB in the beginning and 158.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.86 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 153.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2101.48 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 153.5 MB in the beginning and 196.9 MB in the end (delta: -43.4 MB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7725.15 ms. Allocated memory was 249.0 MB in the beginning and 380.1 MB in the end (delta: 131.1 MB). Free memory was 196.9 MB in the beginning and 276.8 MB in the end (delta: -79.9 MB). Peak memory consumption was 245.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 506]: 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: (((a21 <= 0 && 13 == a8) || (!(a16 == 6) && a21 == 1)) || (a21 == 1 && 15 == a8)) || (a17 == 1 && a21 == 1) - InvariantResult [Line: 577]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((a21 <= 0 && 13 == a8) || (!(a16 == 6) && a21 == 1)) || (a21 == 1 && 15 == a8)) || (a17 == 1 && a21 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Result: SAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 519 SDtfs, 1071 SDslu, 80 SDs, 0 SdLazy, 2988 SolverSat, 772 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 391 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 760 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 42 NumberOfFragments, 61 HoareAnnotationTreeSize, 3 FomulaSimplifications, 10077 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 550 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1368 NumberOfCodeBlocks, 1368 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1549 ConstructedInterpolants, 0 QuantifiedInterpolants, 536643 SizeOfPredicates, 1 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 1736/1763 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...