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/Problem18_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:07:00,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:07:00,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:07:00,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:07:00,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:07:00,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:07:00,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:07:00,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:07:00,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:07:00,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:07:00,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:07:00,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:07:00,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:07:00,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:07:00,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:07:00,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:07:00,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:07:00,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:07:00,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:07:00,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:07:00,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:07:00,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:07:00,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:07:00,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:07:00,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:07:00,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:07:00,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:07:00,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:07:00,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:07:00,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:07:00,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:07:00,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:07:00,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:07:00,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:07:00,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:07:00,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:07:00,969 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 [2019-10-13 18:07:00,989 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:07:00,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:07:00,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:07:00,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:07:00,992 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:07:00,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:07:00,992 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:07:00,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:07:00,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:07:00,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:07:00,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:07:00,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:07:00,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:07:00,995 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:07:00,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:07:00,995 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:07:00,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:07:00,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:07:00,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:07:00,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:07:00,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:07:00,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:07:00,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:07:00,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:07:00,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:07:00,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:07:00,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:07:00,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:07:00,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:07:01,312 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:07:01,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:07:01,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:07:01,333 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:07:01,334 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:07:01,334 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label42.c [2019-10-13 18:07:01,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c613445f6/b366f111487340369f73892d094369ed/FLAG507294266 [2019-10-13 18:07:02,069 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:07:02,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label42.c [2019-10-13 18:07:02,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c613445f6/b366f111487340369f73892d094369ed/FLAG507294266 [2019-10-13 18:07:02,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c613445f6/b366f111487340369f73892d094369ed [2019-10-13 18:07:02,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:07:02,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:07:02,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:02,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:07:02,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:07:02,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:02" (1/1) ... [2019-10-13 18:07:02,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0f51fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:02, skipping insertion in model container [2019-10-13 18:07:02,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:02" (1/1) ... [2019-10-13 18:07:02,240 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:07:02,358 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:07:03,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:03,696 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:07:04,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:04,223 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:07:04,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04 WrapperNode [2019-10-13 18:07:04,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:04,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:07:04,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:07:04,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:07:04,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (1/1) ... [2019-10-13 18:07:04,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (1/1) ... [2019-10-13 18:07:04,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (1/1) ... [2019-10-13 18:07:04,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (1/1) ... [2019-10-13 18:07:04,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (1/1) ... [2019-10-13 18:07:04,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (1/1) ... [2019-10-13 18:07:04,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (1/1) ... [2019-10-13 18:07:04,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:07:04,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:07:04,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:07:04,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:07:04,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (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 [2019-10-13 18:07:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:07:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:07:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:07:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:07:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:07:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:07:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:07:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:07:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:07:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:07:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:07:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:07:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:07:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:07:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:07:07,984 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:07:07,984 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:07:07,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:07 BoogieIcfgContainer [2019-10-13 18:07:07,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:07:07,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:07:07,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:07:07,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:07:07,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:07:02" (1/3) ... [2019-10-13 18:07:07,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0c034c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:07, skipping insertion in model container [2019-10-13 18:07:07,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:04" (2/3) ... [2019-10-13 18:07:07,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0c034c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:07, skipping insertion in model container [2019-10-13 18:07:07,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:07" (3/3) ... [2019-10-13 18:07:07,994 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label42.c [2019-10-13 18:07:08,004 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:07:08,016 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:07:08,027 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:07:08,063 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:07:08,063 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:07:08,064 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:07:08,064 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:07:08,064 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:07:08,064 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:07:08,064 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:07:08,064 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:07:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 18:07:08,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 18:07:08,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:08,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:08,111 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:08,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1002146950, now seen corresponding path program 1 times [2019-10-13 18:07:08,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:08,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313962983] [2019-10-13 18:07:08,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:08,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:08,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:08,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313962983] [2019-10-13 18:07:08,544 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:08,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:07:08,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114731607] [2019-10-13 18:07:08,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:08,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:08,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:08,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:07:08,567 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-13 18:07:17,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:17,362 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-10-13 18:07:17,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:07:17,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-10-13 18:07:17,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:17,408 INFO L225 Difference]: With dead ends: 2984 [2019-10-13 18:07:17,408 INFO L226 Difference]: Without dead ends: 2142 [2019-10-13 18:07:17,420 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 [2019-10-13 18:07:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-13 18:07:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-10-13 18:07:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-10-13 18:07:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-10-13 18:07:17,586 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 55 [2019-10-13 18:07:17,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:17,587 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-10-13 18:07:17,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-10-13 18:07:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 18:07:17,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:17,594 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, 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] [2019-10-13 18:07:17,595 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:17,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1451433186, now seen corresponding path program 1 times [2019-10-13 18:07:17,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:17,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394910225] [2019-10-13 18:07:17,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:17,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:17,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:17,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394910225] [2019-10-13 18:07:17,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:17,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:07:17,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587468595] [2019-10-13 18:07:17,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:07:17,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:07:17,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:07:17,978 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-10-13 18:07:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:28,052 INFO L93 Difference]: Finished difference Result 8649 states and 15485 transitions. [2019-10-13 18:07:28,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:07:28,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2019-10-13 18:07:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:28,088 INFO L225 Difference]: With dead ends: 8649 [2019-10-13 18:07:28,089 INFO L226 Difference]: Without dead ends: 6523 [2019-10-13 18:07:28,096 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:07:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2019-10-13 18:07:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6502. [2019-10-13 18:07:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2019-10-13 18:07:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 9753 transitions. [2019-10-13 18:07:28,313 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 9753 transitions. Word has length 143 [2019-10-13 18:07:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:28,315 INFO L462 AbstractCegarLoop]: Abstraction has 6502 states and 9753 transitions. [2019-10-13 18:07:28,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:07:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 9753 transitions. [2019-10-13 18:07:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 18:07:28,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:28,329 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:28,330 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:28,330 INFO L82 PathProgramCache]: Analyzing trace with hash 163779891, now seen corresponding path program 1 times [2019-10-13 18:07:28,330 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:28,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327721627] [2019-10-13 18:07:28,331 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:28,331 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:28,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:28,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327721627] [2019-10-13 18:07:28,666 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411665804] [2019-10-13 18:07:28,667 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 [2019-10-13 18:07:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:28,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:07:28,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:28,839 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:07:28,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-10-13 18:07:28,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999968950] [2019-10-13 18:07:28,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:07:28,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:28,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:07:28,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:07:28,841 INFO L87 Difference]: Start difference. First operand 6502 states and 9753 transitions. Second operand 3 states. [2019-10-13 18:07:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:32,357 INFO L93 Difference]: Finished difference Result 17267 states and 25492 transitions. [2019-10-13 18:07:32,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:07:32,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-13 18:07:32,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:32,414 INFO L225 Difference]: With dead ends: 17267 [2019-10-13 18:07:32,414 INFO L226 Difference]: Without dead ends: 10771 [2019-10-13 18:07:32,433 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:07:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2019-10-13 18:07:32,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9360. [2019-10-13 18:07:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9360 states. [2019-10-13 18:07:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9360 states to 9360 states and 13070 transitions. [2019-10-13 18:07:32,732 INFO L78 Accepts]: Start accepts. Automaton has 9360 states and 13070 transitions. Word has length 166 [2019-10-13 18:07:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:32,734 INFO L462 AbstractCegarLoop]: Abstraction has 9360 states and 13070 transitions. [2019-10-13 18:07:32,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:07:32,734 INFO L276 IsEmpty]: Start isEmpty. Operand 9360 states and 13070 transitions. [2019-10-13 18:07:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 18:07:32,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:32,740 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:32,947 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:07:32,948 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:32,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:32,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1669578515, now seen corresponding path program 1 times [2019-10-13 18:07:32,948 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:32,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176589271] [2019-10-13 18:07:32,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:32,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:32,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 18:07:33,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176589271] [2019-10-13 18:07:33,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919866805] [2019-10-13 18:07:33,288 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 [2019-10-13 18:07:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:33,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 18:07:33,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 18:07:33,491 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:07:33,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-13 18:07:33,492 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363350455] [2019-10-13 18:07:33,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:33,493 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:33,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:33,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:07:33,494 INFO L87 Difference]: Start difference. First operand 9360 states and 13070 transitions. Second operand 5 states. [2019-10-13 18:07:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:37,870 INFO L93 Difference]: Finished difference Result 18939 states and 27059 transitions. [2019-10-13 18:07:37,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:07:37,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2019-10-13 18:07:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:37,924 INFO L225 Difference]: With dead ends: 18939 [2019-10-13 18:07:37,924 INFO L226 Difference]: Without dead ends: 9585 [2019-10-13 18:07:37,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:07:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9585 states. [2019-10-13 18:07:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9585 to 9469. [2019-10-13 18:07:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9469 states. [2019-10-13 18:07:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9469 states to 9469 states and 12528 transitions. [2019-10-13 18:07:38,178 INFO L78 Accepts]: Start accepts. Automaton has 9469 states and 12528 transitions. Word has length 218 [2019-10-13 18:07:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:38,179 INFO L462 AbstractCegarLoop]: Abstraction has 9469 states and 12528 transitions. [2019-10-13 18:07:38,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9469 states and 12528 transitions. [2019-10-13 18:07:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-13 18:07:38,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:38,184 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:38,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:07:38,390 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:38,391 INFO L82 PathProgramCache]: Analyzing trace with hash 482654642, now seen corresponding path program 1 times [2019-10-13 18:07:38,391 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:38,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632135936] [2019-10-13 18:07:38,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:38,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:38,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:07:38,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632135936] [2019-10-13 18:07:38,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755157544] [2019-10-13 18:07:38,758 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 [2019-10-13 18:07:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:38,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:07:38,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:38,933 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:07:38,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:07:38,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089814496] [2019-10-13 18:07:38,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:07:38,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:38,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:07:38,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:07:38,936 INFO L87 Difference]: Start difference. First operand 9469 states and 12528 transitions. Second operand 11 states.