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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:07:22,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:07:22,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:07:22,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:07:22,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:07:22,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:07:22,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:07:22,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:07:22,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:07:22,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:07:22,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:07:22,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:07:22,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:07:22,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:07:22,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:07:22,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:07:22,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:07:22,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:07:22,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:07:22,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:07:22,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:07:22,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:07:22,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:07:22,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:07:22,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:07:22,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:07:22,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:07:22,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:07:22,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:07:22,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:07:22,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:07:22,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:07:22,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:07:22,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:07:22,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:07:22,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:07:22,118 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 18:07:22,137 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:07:22,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:07:22,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:07:22,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:07:22,139 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:07:22,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:07:22,140 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:07:22,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:07:22,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:07:22,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:07:22,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:07:22,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:07:22,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:07:22,141 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:07:22,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:07:22,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:07:22,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:07:22,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:07:22,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:07:22,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:07:22,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:07:22,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:07:22,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:07:22,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:07:22,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:07:22,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:07:22,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:07:22,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:07:22,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:07:22,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:07:22,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:07:22,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:07:22,481 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:07:22,481 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:07:22,482 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2019-10-13 18:07:22,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4424fa785/b9e2143432d44d16a60b8d2301c9ddd9/FLAG6457db51e [2019-10-13 18:07:23,354 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:07:23,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label51.c [2019-10-13 18:07:23,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4424fa785/b9e2143432d44d16a60b8d2301c9ddd9/FLAG6457db51e [2019-10-13 18:07:23,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4424fa785/b9e2143432d44d16a60b8d2301c9ddd9 [2019-10-13 18:07:23,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:07:23,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:07:23,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:23,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:07:23,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:07:23,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:23" (1/1) ... [2019-10-13 18:07:23,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adbd603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:23, skipping insertion in model container [2019-10-13 18:07:23,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:23" (1/1) ... [2019-10-13 18:07:23,937 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:07:24,057 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:07:25,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:25,219 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:07:25,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:25,760 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:07:25,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25 WrapperNode [2019-10-13 18:07:25,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:25,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:07:25,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:07:25,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:07:25,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (1/1) ... [2019-10-13 18:07:25,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (1/1) ... [2019-10-13 18:07:25,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (1/1) ... [2019-10-13 18:07:25,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (1/1) ... [2019-10-13 18:07:25,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (1/1) ... [2019-10-13 18:07:25,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (1/1) ... [2019-10-13 18:07:25,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (1/1) ... [2019-10-13 18:07:26,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:07:26,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:07:26,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:07:26,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:07:26,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (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 18:07:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:07:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:07:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:07:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:07:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:07:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:07:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:07:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:07:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:07:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:07:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:07:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:07:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:07:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:07:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:07:30,051 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:07:30,052 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:07:30,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:30 BoogieIcfgContainer [2019-10-13 18:07:30,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:07:30,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:07:30,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:07:30,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:07:30,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:07:23" (1/3) ... [2019-10-13 18:07:30,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362beb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:30, skipping insertion in model container [2019-10-13 18:07:30,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:25" (2/3) ... [2019-10-13 18:07:30,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362beb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:30, skipping insertion in model container [2019-10-13 18:07:30,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:30" (3/3) ... [2019-10-13 18:07:30,073 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label51.c [2019-10-13 18:07:30,084 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:07:30,094 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:07:30,106 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:07:30,149 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:07:30,150 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:07:30,150 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:07:30,150 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:07:30,150 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:07:30,150 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:07:30,150 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:07:30,150 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:07:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 18:07:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 18:07:30,197 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:30,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:30,200 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:30,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:30,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1085163511, now seen corresponding path program 1 times [2019-10-13 18:07:30,215 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:30,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020927796] [2019-10-13 18:07:30,216 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:30,216 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:30,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:30,635 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 18:07:30,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020927796] [2019-10-13 18:07:30,637 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:30,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:07:30,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198497660] [2019-10-13 18:07:30,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:30,643 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:30,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:30,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:07:30,661 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-13 18:07:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:40,938 INFO L93 Difference]: Finished difference Result 3000 states and 5781 transitions. [2019-10-13 18:07:40,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:07:40,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-10-13 18:07:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:40,973 INFO L225 Difference]: With dead ends: 3000 [2019-10-13 18:07:40,973 INFO L226 Difference]: Without dead ends: 2142 [2019-10-13 18:07:40,984 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:07:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-13 18:07:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2019-10-13 18:07:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2138 states. [2019-10-13 18:07:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3344 transitions. [2019-10-13 18:07:41,181 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3344 transitions. Word has length 66 [2019-10-13 18:07:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:41,185 INFO L462 AbstractCegarLoop]: Abstraction has 2138 states and 3344 transitions. [2019-10-13 18:07:41,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3344 transitions. [2019-10-13 18:07:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 18:07:41,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:41,207 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, 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] [2019-10-13 18:07:41,207 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:41,208 INFO L82 PathProgramCache]: Analyzing trace with hash 340179813, now seen corresponding path program 1 times [2019-10-13 18:07:41,208 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:41,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19198707] [2019-10-13 18:07:41,209 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:41,210 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:41,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:41,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19198707] [2019-10-13 18:07:41,545 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:41,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:07:41,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594109646] [2019-10-13 18:07:41,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:07:41,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:41,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:07:41,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:07:41,551 INFO L87 Difference]: Start difference. First operand 2138 states and 3344 transitions. Second operand 8 states. [2019-10-13 18:07:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:51,797 INFO L93 Difference]: Finished difference Result 8662 states and 13798 transitions. [2019-10-13 18:07:51,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:07:51,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2019-10-13 18:07:51,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:51,836 INFO L225 Difference]: With dead ends: 8662 [2019-10-13 18:07:51,836 INFO L226 Difference]: Without dead ends: 6530 [2019-10-13 18:07:51,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:07:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2019-10-13 18:07:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 6509. [2019-10-13 18:07:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6509 states. [2019-10-13 18:07:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 8974 transitions. [2019-10-13 18:07:52,050 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 8974 transitions. Word has length 135 [2019-10-13 18:07:52,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:52,054 INFO L462 AbstractCegarLoop]: Abstraction has 6509 states and 8974 transitions. [2019-10-13 18:07:52,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:07:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 8974 transitions. [2019-10-13 18:07:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-13 18:07:52,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:52,064 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:52,066 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:52,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1665750083, now seen corresponding path program 1 times [2019-10-13 18:07:52,066 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:52,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949407655] [2019-10-13 18:07:52,067 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:52,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:52,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:07:52,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949407655] [2019-10-13 18:07:52,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715929915] [2019-10-13 18:07:52,627 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 18:07:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:52,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:07:52,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:53,004 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:07:53,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:07:53,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644008864] [2019-10-13 18:07:53,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:07:53,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:07:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:07:53,007 INFO L87 Difference]: Start difference. First operand 6509 states and 8974 transitions. Second operand 11 states.