java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 21:59:00,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 21:59:00,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 21:59:00,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 21:59:00,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 21:59:00,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 21:59:00,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 21:59:00,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 21:59:00,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 21:59:00,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 21:59:00,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 21:59:00,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 21:59:00,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 21:59:00,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 21:59:00,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 21:59:00,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 21:59:00,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 21:59:00,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 21:59:00,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 21:59:00,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 21:59:00,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 21:59:00,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 21:59:00,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 21:59:00,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 21:59:00,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 21:59:00,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 21:59:00,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 21:59:00,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 21:59:00,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 21:59:00,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 21:59:00,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 21:59:00,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 21:59:00,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 21:59:00,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 21:59:00,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 21:59:00,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 21:59:00,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 21:59:00,944 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 21:59:00,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 21:59:00,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 21:59:00,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 21:59:00,946 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 21:59:00,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 21:59:00,946 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 21:59:00,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 21:59:00,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 21:59:00,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 21:59:00,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 21:59:00,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 21:59:00,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 21:59:00,947 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 21:59:00,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 21:59:00,948 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 21:59:00,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 21:59:00,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 21:59:00,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 21:59:00,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 21:59:00,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 21:59:00,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:59:00,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 21:59:00,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 21:59:00,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 21:59:00,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 21:59:00,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 21:59:00,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 21:59:00,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 21:59:01,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 21:59:01,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 21:59:01,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 21:59:01,235 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 21:59:01,235 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 21:59:01,236 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label26.c [2019-10-14 21:59:01,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdccd2be/91c8abf953c54ebbbede20d8b6e76815/FLAG0a00b86a6 [2019-10-14 21:59:01,920 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 21:59:01,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label26.c [2019-10-14 21:59:01,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdccd2be/91c8abf953c54ebbbede20d8b6e76815/FLAG0a00b86a6 [2019-10-14 21:59:02,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdccd2be/91c8abf953c54ebbbede20d8b6e76815 [2019-10-14 21:59:02,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 21:59:02,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 21:59:02,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 21:59:02,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 21:59:02,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 21:59:02,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:02" (1/1) ... [2019-10-14 21:59:02,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154386d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:02, skipping insertion in model container [2019-10-14 21:59:02,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:02" (1/1) ... [2019-10-14 21:59:02,177 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 21:59:02,243 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 21:59:02,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:59:02,870 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 21:59:03,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:59:03,154 INFO L192 MainTranslator]: Completed translation [2019-10-14 21:59:03,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03 WrapperNode [2019-10-14 21:59:03,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 21:59:03,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 21:59:03,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 21:59:03,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 21:59:03,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (1/1) ... [2019-10-14 21:59:03,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (1/1) ... [2019-10-14 21:59:03,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (1/1) ... [2019-10-14 21:59:03,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (1/1) ... [2019-10-14 21:59:03,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (1/1) ... [2019-10-14 21:59:03,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (1/1) ... [2019-10-14 21:59:03,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (1/1) ... [2019-10-14 21:59:03,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 21:59:03,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 21:59:03,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 21:59:03,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 21:59:03,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:59:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 21:59:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 21:59:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 21:59:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 21:59:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 21:59:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 21:59:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 21:59:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 21:59:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 21:59:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 21:59:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 21:59:05,552 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 21:59:05,553 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 21:59:05,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:05 BoogieIcfgContainer [2019-10-14 21:59:05,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 21:59:05,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 21:59:05,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 21:59:05,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 21:59:05,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:59:02" (1/3) ... [2019-10-14 21:59:05,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5594181a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:05, skipping insertion in model container [2019-10-14 21:59:05,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:03" (2/3) ... [2019-10-14 21:59:05,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5594181a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:05, skipping insertion in model container [2019-10-14 21:59:05,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:05" (3/3) ... [2019-10-14 21:59:05,586 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label26.c [2019-10-14 21:59:05,599 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 21:59:05,610 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 21:59:05,626 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 21:59:05,660 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 21:59:05,660 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 21:59:05,660 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 21:59:05,660 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 21:59:05,661 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 21:59:05,661 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 21:59:05,661 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 21:59:05,661 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 21:59:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-14 21:59:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 21:59:05,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:05,708 INFO L380 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] [2019-10-14 21:59:05,710 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash -2020342670, now seen corresponding path program 1 times [2019-10-14 21:59:05,725 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:05,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226260449] [2019-10-14 21:59:05,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:05,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:05,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:06,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226260449] [2019-10-14 21:59:06,176 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:59:06,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:59:06,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861577674] [2019-10-14 21:59:06,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:59:06,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:06,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:59:06,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:59:06,200 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-10-14 21:59:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:09,554 INFO L93 Difference]: Finished difference Result 999 states and 1795 transitions. [2019-10-14 21:59:09,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 21:59:09,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-10-14 21:59:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:09,580 INFO L225 Difference]: With dead ends: 999 [2019-10-14 21:59:09,581 INFO L226 Difference]: Without dead ends: 639 [2019-10-14 21:59:09,596 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:09,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-14 21:59:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 621. [2019-10-14 21:59:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-14 21:59:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 956 transitions. [2019-10-14 21:59:09,780 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 956 transitions. Word has length 45 [2019-10-14 21:59:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:09,781 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 956 transitions. [2019-10-14 21:59:09,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:59:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 956 transitions. [2019-10-14 21:59:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-14 21:59:09,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:09,799 INFO L380 BasicCegarLoop]: trace histogram [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, 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] [2019-10-14 21:59:09,800 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:09,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1793518198, now seen corresponding path program 1 times [2019-10-14 21:59:09,802 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:09,802 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849691130] [2019-10-14 21:59:09,802 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:09,803 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:09,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:10,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849691130] [2019-10-14 21:59:10,082 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408557659] [2019-10-14 21:59:10,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:10,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 21:59:10,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:10,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:10,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:10,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-10-14 21:59:10,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58743836] [2019-10-14 21:59:10,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:59:10,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:10,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:59:10,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 21:59:10,322 INFO L87 Difference]: Start difference. First operand 621 states and 956 transitions. Second operand 5 states. [2019-10-14 21:59:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:12,075 INFO L93 Difference]: Finished difference Result 1833 states and 2866 transitions. [2019-10-14 21:59:12,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 21:59:12,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-10-14 21:59:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:12,084 INFO L225 Difference]: With dead ends: 1833 [2019-10-14 21:59:12,084 INFO L226 Difference]: Without dead ends: 1218 [2019-10-14 21:59:12,087 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 21:59:12,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2019-10-14 21:59:12,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1009. [2019-10-14 21:59:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-10-14 21:59:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1374 transitions. [2019-10-14 21:59:12,158 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1374 transitions. Word has length 119 [2019-10-14 21:59:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:12,159 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1374 transitions. [2019-10-14 21:59:12,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:59:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1374 transitions. [2019-10-14 21:59:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-14 21:59:12,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:12,163 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-10-14 21:59:12,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:12,371 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:12,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:12,372 INFO L82 PathProgramCache]: Analyzing trace with hash -373682948, now seen corresponding path program 1 times [2019-10-14 21:59:12,372 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:12,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39066325] [2019-10-14 21:59:12,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:12,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:12,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-14 21:59:12,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39066325] [2019-10-14 21:59:12,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833128335] [2019-10-14 21:59:12,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:12,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 21:59:12,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:12,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:12,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:12,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:13,350 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 48 [2019-10-14 21:59:13,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 71 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:13,573 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:59:13,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-10-14 21:59:13,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967497033] [2019-10-14 21:59:13,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 21:59:13,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:13,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 21:59:13,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-14 21:59:13,576 INFO L87 Difference]: Start difference. First operand 1009 states and 1374 transitions. Second operand 12 states. [2019-10-14 21:59:20,964 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-10-14 21:59:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:24,141 INFO L93 Difference]: Finished difference Result 5248 states and 8809 transitions. [2019-10-14 21:59:24,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-10-14 21:59:24,142 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 235 [2019-10-14 21:59:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:24,195 INFO L225 Difference]: With dead ends: 5248 [2019-10-14 21:59:24,195 INFO L226 Difference]: Without dead ends: 4433 [2019-10-14 21:59:24,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=465, Invalid=1605, Unknown=0, NotChecked=0, Total=2070 [2019-10-14 21:59:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2019-10-14 21:59:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 3189. [2019-10-14 21:59:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2019-10-14 21:59:24,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4277 transitions. [2019-10-14 21:59:24,475 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4277 transitions. Word has length 235 [2019-10-14 21:59:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:24,478 INFO L462 AbstractCegarLoop]: Abstraction has 3189 states and 4277 transitions. [2019-10-14 21:59:24,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 21:59:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4277 transitions. [2019-10-14 21:59:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2019-10-14 21:59:24,499 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:24,500 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 21:59:24,703 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:24,704 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1980457565, now seen corresponding path program 1 times [2019-10-14 21:59:24,705 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:24,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192127037] [2019-10-14 21:59:24,706 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:24,706 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:24,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-14 21:59:25,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192127037] [2019-10-14 21:59:25,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386451354] [2019-10-14 21:59:25,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:25,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:25,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-14 21:59:25,465 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:59:25,466 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2019-10-14 21:59:25,466 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160637683] [2019-10-14 21:59:25,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 21:59:25,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:25,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 21:59:25,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 21:59:25,468 INFO L87 Difference]: Start difference. First operand 3189 states and 4277 transitions. Second operand 10 states. [2019-10-14 21:59:28,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:28,905 INFO L93 Difference]: Finished difference Result 7995 states and 11188 transitions. [2019-10-14 21:59:28,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 21:59:28,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 326 [2019-10-14 21:59:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:28,937 INFO L225 Difference]: With dead ends: 7995 [2019-10-14 21:59:28,937 INFO L226 Difference]: Without dead ends: 4812 [2019-10-14 21:59:28,947 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 336 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2019-10-14 21:59:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4812 states. [2019-10-14 21:59:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4812 to 4588. [2019-10-14 21:59:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4588 states. [2019-10-14 21:59:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 6277 transitions. [2019-10-14 21:59:29,100 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 6277 transitions. Word has length 326 [2019-10-14 21:59:29,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:29,102 INFO L462 AbstractCegarLoop]: Abstraction has 4588 states and 6277 transitions. [2019-10-14 21:59:29,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 21:59:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 6277 transitions. [2019-10-14 21:59:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-10-14 21:59:29,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:29,118 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 21:59:29,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:29,328 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:29,329 INFO L82 PathProgramCache]: Analyzing trace with hash -255883060, now seen corresponding path program 1 times [2019-10-14 21:59:29,329 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:29,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991198976] [2019-10-14 21:59:29,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:29,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:29,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 278 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-14 21:59:29,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991198976] [2019-10-14 21:59:29,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647830478] [2019-10-14 21:59:29,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:29,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-14 21:59:29,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:30,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-14 21:59:30,473 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:59:30,473 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-10-14 21:59:30,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560073894] [2019-10-14 21:59:30,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 21:59:30,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:30,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 21:59:30,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-14 21:59:30,475 INFO L87 Difference]: Start difference. First operand 4588 states and 6277 transitions. Second operand 13 states. [2019-10-14 21:59:32,031 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2019-10-14 21:59:34,957 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2019-10-14 21:59:35,522 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68