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/Problem12_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:00:22,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:00:22,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:00:22,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:00:22,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:00:22,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:00:22,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:00:22,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:00:22,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:00:22,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:00:22,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:00:22,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:00:22,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:00:22,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:00:22,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:00:22,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:00:22,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:00:22,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:00:22,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:00:22,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:00:22,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:00:22,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:00:22,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:00:22,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:00:22,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:00:22,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:00:22,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:00:22,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:00:22,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:00:22,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:00:22,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:00:22,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:00:22,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:00:22,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:00:22,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:00:22,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:00:22,979 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 22:00:23,008 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:00:23,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:00:23,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:00:23,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:00:23,011 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:00:23,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:00:23,011 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:00:23,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:00:23,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:00:23,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:00:23,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:00:23,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:00:23,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:00:23,017 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:00:23,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:00:23,018 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:00:23,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:00:23,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:00:23,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:00:23,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:00:23,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:00:23,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:00:23,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:00:23,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:00:23,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:00:23,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:00:23,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:00:23,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:00:23,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:00:23,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:00:23,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:00:23,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:00:23,315 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:00:23,316 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:00:23,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label24.c [2019-10-14 22:00:23,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63aa9b597/000ff69993b14752b2f4a2e8c8ea00a9/FLAG10c97a8d6 [2019-10-14 22:00:24,207 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:00:24,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label24.c [2019-10-14 22:00:24,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63aa9b597/000ff69993b14752b2f4a2e8c8ea00a9/FLAG10c97a8d6 [2019-10-14 22:00:24,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63aa9b597/000ff69993b14752b2f4a2e8c8ea00a9 [2019-10-14 22:00:24,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:00:24,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:00:24,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:00:24,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:00:24,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:00:24,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:24" (1/1) ... [2019-10-14 22:00:24,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a7751a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:24, skipping insertion in model container [2019-10-14 22:00:24,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:24" (1/1) ... [2019-10-14 22:00:24,292 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:00:24,431 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:00:25,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:00:25,917 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:00:26,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:00:26,622 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:00:26,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26 WrapperNode [2019-10-14 22:00:26,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:00:26,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:00:26,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:00:26,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:00:26,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (1/1) ... [2019-10-14 22:00:26,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (1/1) ... [2019-10-14 22:00:26,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (1/1) ... [2019-10-14 22:00:26,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (1/1) ... [2019-10-14 22:00:26,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (1/1) ... [2019-10-14 22:00:26,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (1/1) ... [2019-10-14 22:00:26,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (1/1) ... [2019-10-14 22:00:26,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:00:26,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:00:26,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:00:26,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:00:26,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (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 22:00:27,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:00:27,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:00:27,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:00:27,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:00:27,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:00:27,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-14 22:00:27,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:00:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:00:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:00:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:00:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-14 22:00:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:00:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:00:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:00:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:00:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:00:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:00:32,197 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:00:32,198 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:00:32,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:32 BoogieIcfgContainer [2019-10-14 22:00:32,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:00:32,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:00:32,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:00:32,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:00:32,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:24" (1/3) ... [2019-10-14 22:00:32,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3726e07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:32, skipping insertion in model container [2019-10-14 22:00:32,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:26" (2/3) ... [2019-10-14 22:00:32,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3726e07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:32, skipping insertion in model container [2019-10-14 22:00:32,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:32" (3/3) ... [2019-10-14 22:00:32,219 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label24.c [2019-10-14 22:00:32,231 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:00:32,242 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:00:32,254 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:00:32,297 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:00:32,298 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:00:32,298 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:00:32,298 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:00:32,298 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:00:32,298 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:00:32,298 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:00:32,298 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:00:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-14 22:00:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 22:00:32,354 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:00:32,355 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] [2019-10-14 22:00:32,357 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:00:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:00:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash 721508781, now seen corresponding path program 1 times [2019-10-14 22:00:32,369 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:00:32,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713169169] [2019-10-14 22:00:32,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:32,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:32,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:00:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:32,773 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 22:00:32,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713169169] [2019-10-14 22:00:32,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:00:32,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:00:32,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751223664] [2019-10-14 22:00:32,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:00:32,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:00:32,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:00:32,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:00:32,799 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-10-14 22:00:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:00:41,065 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2019-10-14 22:00:41,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 22:00:41,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 22:00:41,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:00:41,115 INFO L225 Difference]: With dead ends: 2471 [2019-10-14 22:00:41,115 INFO L226 Difference]: Without dead ends: 1568 [2019-10-14 22:00:41,130 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:00:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2019-10-14 22:00:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2019-10-14 22:00:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2019-10-14 22:00:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2019-10-14 22:00:41,358 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 52 [2019-10-14 22:00:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:00:41,359 INFO L462 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2019-10-14 22:00:41,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:00:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2019-10-14 22:00:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-14 22:00:41,385 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:00:41,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:41,386 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:00:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:00:41,387 INFO L82 PathProgramCache]: Analyzing trace with hash -511527591, now seen corresponding path program 1 times [2019-10-14 22:00:41,388 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:00:41,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053800244] [2019-10-14 22:00:41,388 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:41,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:41,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:00:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:00:41,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053800244] [2019-10-14 22:00:41,787 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:00:41,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:00:41,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702459133] [2019-10-14 22:00:41,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:00:41,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:00:41,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:00:41,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:00:41,794 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 8 states. [2019-10-14 22:00:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:00:53,546 INFO L93 Difference]: Finished difference Result 4751 states and 8585 transitions. [2019-10-14 22:00:53,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:00:53,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2019-10-14 22:00:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:00:53,572 INFO L225 Difference]: With dead ends: 4751 [2019-10-14 22:00:53,572 INFO L226 Difference]: Without dead ends: 3204 [2019-10-14 22:00:53,579 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:00:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2019-10-14 22:00:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3149. [2019-10-14 22:00:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3149 states. [2019-10-14 22:00:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4657 transitions. [2019-10-14 22:00:53,703 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 4657 transitions. Word has length 125 [2019-10-14 22:00:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:00:53,706 INFO L462 AbstractCegarLoop]: Abstraction has 3149 states and 4657 transitions. [2019-10-14 22:00:53,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:00:53,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 4657 transitions. [2019-10-14 22:00:53,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-14 22:00:53,718 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:00:53,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:53,719 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:00:53,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:00:53,720 INFO L82 PathProgramCache]: Analyzing trace with hash -644607435, now seen corresponding path program 1 times [2019-10-14 22:00:53,721 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:00:53,721 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409736698] [2019-10-14 22:00:53,721 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:53,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:53,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:00:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:00:54,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409736698] [2019-10-14 22:00:54,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784369237] [2019-10-14 22:00:54,131 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 22:00:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:54,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:00:54,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:00:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:00:54,292 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:00:54,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-10-14 22:00:54,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380705181] [2019-10-14 22:00:54,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:00:54,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:00:54,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:00:54,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:00:54,294 INFO L87 Difference]: Start difference. First operand 3149 states and 4657 transitions. Second operand 3 states. [2019-10-14 22:00:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:00:59,076 INFO L93 Difference]: Finished difference Result 9421 states and 14168 transitions. [2019-10-14 22:00:59,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:00:59,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2019-10-14 22:00:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:00:59,116 INFO L225 Difference]: With dead ends: 9421 [2019-10-14 22:00:59,116 INFO L226 Difference]: Without dead ends: 6278 [2019-10-14 22:00:59,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:00:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2019-10-14 22:00:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 6278. [2019-10-14 22:00:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2019-10-14 22:00:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 8479 transitions. [2019-10-14 22:00:59,274 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 8479 transitions. Word has length 127 [2019-10-14 22:00:59,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:00:59,275 INFO L462 AbstractCegarLoop]: Abstraction has 6278 states and 8479 transitions. [2019-10-14 22:00:59,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:00:59,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 8479 transitions. [2019-10-14 22:00:59,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-14 22:00:59,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:00:59,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:59,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:00:59,491 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:00:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:00:59,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1694615351, now seen corresponding path program 1 times [2019-10-14 22:00:59,492 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:00:59,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965968324] [2019-10-14 22:00:59,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:59,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:59,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:00:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:00:59,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965968324] [2019-10-14 22:00:59,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:00:59,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:00:59,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162093262] [2019-10-14 22:00:59,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:00:59,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:00:59,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:00:59,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:00:59,780 INFO L87 Difference]: Start difference. First operand 6278 states and 8479 transitions. Second operand 9 states.