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/Problem16_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:03:59,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:03:59,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:03:59,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:03:59,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:03:59,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:03:59,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:03:59,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:03:59,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:03:59,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:03:59,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:03:59,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:03:59,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:03:59,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:03:59,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:03:59,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:03:59,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:03:59,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:03:59,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:03:59,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:03:59,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:03:59,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:03:59,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:03:59,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:03:59,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:03:59,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:03:59,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:03:59,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:03:59,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:03:59,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:03:59,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:03:59,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:03:59,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:03:59,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:03:59,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:03:59,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:03:59,668 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 22:03:59,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:03:59,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:03:59,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:03:59,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:03:59,683 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:03:59,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:03:59,684 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:03:59,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:03:59,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:03:59,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:03:59,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:03:59,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:03:59,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:03:59,685 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:03:59,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:03:59,686 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:03:59,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:03:59,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:03:59,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:03:59,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:03:59,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:03:59,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:03:59,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:03:59,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:03:59,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:03:59,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:03:59,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:03:59,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:03:59,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:03:59,944 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:03:59,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:03:59,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:03:59,963 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:03:59,964 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:03:59,965 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2019-10-14 22:04:00,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b34aa595/52aa706e99234fdaafa55fe13592b6ba/FLAGece209acb [2019-10-14 22:04:00,705 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:04:00,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2019-10-14 22:04:00,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b34aa595/52aa706e99234fdaafa55fe13592b6ba/FLAGece209acb [2019-10-14 22:04:00,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b34aa595/52aa706e99234fdaafa55fe13592b6ba [2019-10-14 22:04:00,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:04:00,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:04:00,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:04:00,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:04:00,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:04:00,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:00" (1/1) ... [2019-10-14 22:04:00,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6a8581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:00, skipping insertion in model container [2019-10-14 22:04:00,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:00" (1/1) ... [2019-10-14 22:04:00,896 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:04:00,980 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:04:01,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:04:01,954 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:04:02,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:04:02,205 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:04:02,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02 WrapperNode [2019-10-14 22:04:02,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:04:02,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:04:02,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:04:02,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:04:02,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (1/1) ... [2019-10-14 22:04:02,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (1/1) ... [2019-10-14 22:04:02,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (1/1) ... [2019-10-14 22:04:02,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (1/1) ... [2019-10-14 22:04:02,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (1/1) ... [2019-10-14 22:04:02,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (1/1) ... [2019-10-14 22:04:02,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (1/1) ... [2019-10-14 22:04:02,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:04:02,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:04:02,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:04:02,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:04:02,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (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 22:04:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:04:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:04:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:04:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:04:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:04:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:04:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:04:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:04:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:04:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:04:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:04:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:04:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:04:04,780 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:04:04,781 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:04:04,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:04 BoogieIcfgContainer [2019-10-14 22:04:04,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:04:04,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:04:04,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:04:04,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:04:04,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:00" (1/3) ... [2019-10-14 22:04:04,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a905ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:04, skipping insertion in model container [2019-10-14 22:04:04,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:02" (2/3) ... [2019-10-14 22:04:04,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a905ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:04:04, skipping insertion in model container [2019-10-14 22:04:04,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:04:04" (3/3) ... [2019-10-14 22:04:04,794 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label17.c [2019-10-14 22:04:04,805 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:04:04,814 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:04:04,827 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:04:04,860 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:04:04,860 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:04:04,860 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:04:04,860 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:04:04,860 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:04:04,861 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:04:04,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:04:04,861 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:04:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-14 22:04:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-14 22:04:04,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:04,901 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] [2019-10-14 22:04:04,903 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:04,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:04,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1802126811, now seen corresponding path program 1 times [2019-10-14 22:04:04,919 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:04,919 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650264456] [2019-10-14 22:04:04,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:04,920 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:04,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:05,381 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 22:04:05,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650264456] [2019-10-14 22:04:05,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:04:05,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:04:05,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685089618] [2019-10-14 22:04:05,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:04:05,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:05,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:04:05,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:04:05,407 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-14 22:04:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:10,545 INFO L93 Difference]: Finished difference Result 1515 states and 2849 transitions. [2019-10-14 22:04:10,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:04:10,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-10-14 22:04:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:10,573 INFO L225 Difference]: With dead ends: 1515 [2019-10-14 22:04:10,573 INFO L226 Difference]: Without dead ends: 1038 [2019-10-14 22:04:10,584 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 [2019-10-14 22:04:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-14 22:04:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-14 22:04:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-14 22:04:10,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1618 transitions. [2019-10-14 22:04:10,712 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1618 transitions. Word has length 64 [2019-10-14 22:04:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:10,713 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1618 transitions. [2019-10-14 22:04:10,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:04:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1618 transitions. [2019-10-14 22:04:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-14 22:04:10,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:10,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:10,726 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:10,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:10,726 INFO L82 PathProgramCache]: Analyzing trace with hash 206002368, now seen corresponding path program 1 times [2019-10-14 22:04:10,727 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:10,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285638054] [2019-10-14 22:04:10,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:10,727 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:10,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:04:11,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285638054] [2019-10-14 22:04:11,195 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:04:11,195 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:04:11,195 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570427076] [2019-10-14 22:04:11,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:04:11,201 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:11,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:04:11,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:04:11,202 INFO L87 Difference]: Start difference. First operand 1031 states and 1618 transitions. Second operand 9 states. [2019-10-14 22:04:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:15,552 INFO L93 Difference]: Finished difference Result 3113 states and 4945 transitions. [2019-10-14 22:04:15,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:04:15,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2019-10-14 22:04:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:15,569 INFO L225 Difference]: With dead ends: 3113 [2019-10-14 22:04:15,570 INFO L226 Difference]: Without dead ends: 2088 [2019-10-14 22:04:15,574 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:04:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2019-10-14 22:04:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2070. [2019-10-14 22:04:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2019-10-14 22:04:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2950 transitions. [2019-10-14 22:04:15,673 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2950 transitions. Word has length 184 [2019-10-14 22:04:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:15,674 INFO L462 AbstractCegarLoop]: Abstraction has 2070 states and 2950 transitions. [2019-10-14 22:04:15,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:04:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2950 transitions. [2019-10-14 22:04:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-14 22:04:15,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:15,681 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, 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] [2019-10-14 22:04:15,681 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:15,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2018610233, now seen corresponding path program 1 times [2019-10-14 22:04:15,682 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:15,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833538374] [2019-10-14 22:04:15,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:15,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:15,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:04:16,084 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833538374] [2019-10-14 22:04:16,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403843688] [2019-10-14 22:04:16,085 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 22:04:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:16,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:04:16,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:04:16,333 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:04:16,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-10-14 22:04:16,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929737783] [2019-10-14 22:04:16,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:04:16,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:16,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:04:16,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:04:16,336 INFO L87 Difference]: Start difference. First operand 2070 states and 2950 transitions. Second operand 11 states. [2019-10-14 22:04:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:20,452 INFO L93 Difference]: Finished difference Result 5239 states and 7431 transitions. [2019-10-14 22:04:20,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 22:04:20,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 234 [2019-10-14 22:04:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:20,482 INFO L225 Difference]: With dead ends: 5239 [2019-10-14 22:04:20,482 INFO L226 Difference]: Without dead ends: 3175 [2019-10-14 22:04:20,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:04:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2019-10-14 22:04:20,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 3121. [2019-10-14 22:04:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2019-10-14 22:04:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4041 transitions. [2019-10-14 22:04:20,605 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4041 transitions. Word has length 234 [2019-10-14 22:04:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:20,607 INFO L462 AbstractCegarLoop]: Abstraction has 3121 states and 4041 transitions. [2019-10-14 22:04:20,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 22:04:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4041 transitions. [2019-10-14 22:04:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2019-10-14 22:04:20,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:20,615 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:04:20,819 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:04:20,820 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:20,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1882479951, now seen corresponding path program 1 times [2019-10-14 22:04:20,821 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:20,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820876652] [2019-10-14 22:04:20,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:20,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:20,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-10-14 22:04:21,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820876652] [2019-10-14 22:04:21,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853036555] [2019-10-14 22:04:21,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:04:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:21,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:04:21,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-14 22:04:21,644 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:04:21,645 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-14 22:04:21,645 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100593390] [2019-10-14 22:04:21,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:04:21,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:21,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:04:21,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:04:21,648 INFO L87 Difference]: Start difference. First operand 3121 states and 4041 transitions. Second operand 3 states. [2019-10-14 22:04:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:04:23,167 INFO L93 Difference]: Finished difference Result 4136 states and 5213 transitions. [2019-10-14 22:04:23,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:04:23,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2019-10-14 22:04:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:04:23,187 INFO L225 Difference]: With dead ends: 4136 [2019-10-14 22:04:23,188 INFO L226 Difference]: Without dead ends: 4134 [2019-10-14 22:04:23,190 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:04:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2019-10-14 22:04:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3121. [2019-10-14 22:04:23,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2019-10-14 22:04:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4040 transitions. [2019-10-14 22:04:23,273 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4040 transitions. Word has length 326 [2019-10-14 22:04:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:04:23,274 INFO L462 AbstractCegarLoop]: Abstraction has 3121 states and 4040 transitions. [2019-10-14 22:04:23,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:04:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4040 transitions. [2019-10-14 22:04:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2019-10-14 22:04:23,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:04:23,288 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 22:04:23,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:04:23,501 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:04:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:04:23,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1117184096, now seen corresponding path program 1 times [2019-10-14 22:04:23,503 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:04:23,503 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657881140] [2019-10-14 22:04:23,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:23,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:04:23,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:04:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 333 proven. 199 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2019-10-14 22:04:24,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657881140] [2019-10-14 22:04:24,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45816167] [2019-10-14 22:04:24,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:04:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:04:24,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:04:24,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:04:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-14 22:04:24,952 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:04:24,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-10-14 22:04:24,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75483475] [2019-10-14 22:04:24,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 22:04:24,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:04:24,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 22:04:24,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:04:24,955 INFO L87 Difference]: Start difference. First operand 3121 states and 4040 transitions. Second operand 12 states.