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_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:07:20,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:07:20,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:07:20,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:07:20,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:07:20,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:07:20,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:07:20,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:07:20,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:07:20,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:07:20,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:07:20,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:07:20,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:07:20,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:07:20,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:07:20,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:07:20,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:07:20,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:07:20,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:07:20,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:07:20,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:07:20,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:07:20,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:07:20,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:07:20,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:07:20,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:07:20,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:07:20,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:07:20,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:07:20,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:07:20,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:07:20,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:07:20,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:07:20,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:07:20,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:07:20,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:07:20,688 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 18:07:20,716 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:07:20,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:07:20,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:07:20,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:07:20,718 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:07:20,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:07:20,719 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:07:20,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:07:20,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:07:20,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:07:20,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:07:20,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:07:20,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:07:20,720 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:07:20,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:07:20,720 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:07:20,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:07:20,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:07:20,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:07:20,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:07:20,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:07:20,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:07:20,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:07:20,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:07:20,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:07:20,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:07:20,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:07:20,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:07:20,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:07:21,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:07:21,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:07:21,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:07:21,060 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:07:21,060 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:07:21,061 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2019-10-13 18:07:21,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2111b3/762f7ccc78004589849136538892bdea/FLAGe480ac429 [2019-10-13 18:07:21,885 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:07:21,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2019-10-13 18:07:21,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2111b3/762f7ccc78004589849136538892bdea/FLAGe480ac429 [2019-10-13 18:07:21,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2111b3/762f7ccc78004589849136538892bdea [2019-10-13 18:07:22,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:07:22,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:07:22,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:22,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:07:22,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:07:22,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:21" (1/1) ... [2019-10-13 18:07:22,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a499990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22, skipping insertion in model container [2019-10-13 18:07:22,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:21" (1/1) ... [2019-10-13 18:07:22,033 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:07:22,168 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:07:23,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:23,773 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:07:24,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:24,271 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:07:24,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24 WrapperNode [2019-10-13 18:07:24,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:24,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:07:24,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:07:24,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:07:24,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (1/1) ... [2019-10-13 18:07:24,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (1/1) ... [2019-10-13 18:07:24,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (1/1) ... [2019-10-13 18:07:24,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (1/1) ... [2019-10-13 18:07:24,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (1/1) ... [2019-10-13 18:07:24,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (1/1) ... [2019-10-13 18:07:24,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (1/1) ... [2019-10-13 18:07:24,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:07:24,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:07:24,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:07:24,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:07:24,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (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 18:07:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:07:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:07:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:07:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:07:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:07:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:07:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:07:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:07:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:07:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:07:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:07:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:07:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:07:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:07:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:07:28,640 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:07:28,641 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:07:28,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:28 BoogieIcfgContainer [2019-10-13 18:07:28,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:07:28,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:07:28,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:07:28,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:07:28,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:07:21" (1/3) ... [2019-10-13 18:07:28,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1cc216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:28, skipping insertion in model container [2019-10-13 18:07:28,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:24" (2/3) ... [2019-10-13 18:07:28,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1cc216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:28, skipping insertion in model container [2019-10-13 18:07:28,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:28" (3/3) ... [2019-10-13 18:07:28,667 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label48.c [2019-10-13 18:07:28,680 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:07:28,693 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:07:28,707 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:07:28,754 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:07:28,755 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:07:28,755 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:07:28,755 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:07:28,755 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:07:28,755 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:07:28,756 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:07:28,756 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:07:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 18:07:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 18:07:28,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:28,822 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] [2019-10-13 18:07:28,824 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:28,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1448610927, now seen corresponding path program 1 times [2019-10-13 18:07:28,841 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:28,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035129878] [2019-10-13 18:07:28,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:28,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:28,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:29,250 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 18:07:29,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035129878] [2019-10-13 18:07:29,252 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:29,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:07:29,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301161367] [2019-10-13 18:07:29,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:29,257 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:29,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:29,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:07:29,274 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-13 18:07:38,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:38,785 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-10-13 18:07:38,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:07:38,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-10-13 18:07:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:38,823 INFO L225 Difference]: With dead ends: 2984 [2019-10-13 18:07:38,824 INFO L226 Difference]: Without dead ends: 2142 [2019-10-13 18:07:38,834 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 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 18:07:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-13 18:07:39,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-10-13 18:07:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-10-13 18:07:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-10-13 18:07:39,017 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 60 [2019-10-13 18:07:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:39,018 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-10-13 18:07:39,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-10-13 18:07:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 18:07:39,037 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:39,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:39,038 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:39,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:39,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1160293157, now seen corresponding path program 1 times [2019-10-13 18:07:39,039 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:39,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66919591] [2019-10-13 18:07:39,039 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:39,040 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:39,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:39,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66919591] [2019-10-13 18:07:39,478 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:39,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:07:39,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052210867] [2019-10-13 18:07:39,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:07:39,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:39,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:07:39,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:07:39,482 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-10-13 18:07:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:47,485 INFO L93 Difference]: Finished difference Result 6473 states and 11554 transitions. [2019-10-13 18:07:47,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 18:07:47,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 149 [2019-10-13 18:07:47,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:47,514 INFO L225 Difference]: With dead ends: 6473 [2019-10-13 18:07:47,515 INFO L226 Difference]: Without dead ends: 4347 [2019-10-13 18:07:47,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:07:47,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2019-10-13 18:07:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 4301. [2019-10-13 18:07:47,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4301 states. [2019-10-13 18:07:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 7377 transitions. [2019-10-13 18:07:47,684 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 7377 transitions. Word has length 149 [2019-10-13 18:07:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:47,685 INFO L462 AbstractCegarLoop]: Abstraction has 4301 states and 7377 transitions. [2019-10-13 18:07:47,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:07:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 7377 transitions. [2019-10-13 18:07:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 18:07:47,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:47,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:47,689 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:47,690 INFO L82 PathProgramCache]: Analyzing trace with hash 610889412, now seen corresponding path program 1 times [2019-10-13 18:07:47,690 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:47,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676165599] [2019-10-13 18:07:47,691 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:47,691 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:47,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:48,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676165599] [2019-10-13 18:07:48,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:48,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 18:07:48,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435350720] [2019-10-13 18:07:48,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 18:07:48,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:48,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 18:07:48,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:07:48,078 INFO L87 Difference]: Start difference. First operand 4301 states and 7377 transitions. Second operand 7 states. [2019-10-13 18:07:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:56,673 INFO L93 Difference]: Finished difference Result 13120 states and 22980 transitions. [2019-10-13 18:07:56,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 18:07:56,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2019-10-13 18:07:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:56,720 INFO L225 Difference]: With dead ends: 13120 [2019-10-13 18:07:56,721 INFO L226 Difference]: Without dead ends: 8825 [2019-10-13 18:07:56,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:07:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8825 states. [2019-10-13 18:07:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8825 to 8723. [2019-10-13 18:07:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8723 states. [2019-10-13 18:07:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8723 states to 8723 states and 13156 transitions. [2019-10-13 18:07:56,954 INFO L78 Accepts]: Start accepts. Automaton has 8723 states and 13156 transitions. Word has length 150 [2019-10-13 18:07:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:56,955 INFO L462 AbstractCegarLoop]: Abstraction has 8723 states and 13156 transitions. [2019-10-13 18:07:56,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 18:07:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 8723 states and 13156 transitions. [2019-10-13 18:07:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 18:07:56,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:56,963 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, 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] [2019-10-13 18:07:56,963 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:56,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1350391872, now seen corresponding path program 1 times [2019-10-13 18:07:56,964 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:56,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722793242] [2019-10-13 18:07:56,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:56,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:56,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 106 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 18:07:57,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722793242] [2019-10-13 18:07:57,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918129525] [2019-10-13 18:07:57,302 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 18:07:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:57,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 18:07:57,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-13 18:07:57,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:07:57,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2019-10-13 18:07:57,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770325197] [2019-10-13 18:07:57,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:57,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:57,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:57,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 18:07:57,535 INFO L87 Difference]: Start difference. First operand 8723 states and 13156 transitions. Second operand 5 states.