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/Problem15_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:04:20,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:04:20,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:04:20,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:04:20,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:04:20,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:04:20,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:04:20,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:04:20,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:04:20,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:04:20,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:04:20,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:04:20,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:04:20,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:04:20,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:04:20,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:04:20,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:04:20,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:04:20,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:04:20,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:04:20,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:04:20,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:04:20,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:04:20,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:04:20,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:04:20,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:04:20,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:04:20,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:04:20,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:04:20,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:04:20,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:04:20,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:04:20,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:04:20,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:04:20,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:04:20,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:04:20,448 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 18:04:20,479 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:04:20,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:04:20,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:04:20,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:04:20,486 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:04:20,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:04:20,486 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:04:20,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:04:20,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:04:20,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:04:20,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:04:20,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:04:20,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:04:20,487 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:04:20,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:04:20,488 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:04:20,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:04:20,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:04:20,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:04:20,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:04:20,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:04:20,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:04:20,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:04:20,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:04:20,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:04:20,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:04:20,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:04:20,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:04:20,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:04:20,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:04:20,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:04:20,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:04:20,783 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:04:20,784 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:04:20,784 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49.c [2019-10-13 18:04:20,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e1ed495/58bf7d6f12674bf99298f2f1f8e20354/FLAG78ea2ba13 [2019-10-13 18:04:21,462 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:04:21,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label49.c [2019-10-13 18:04:21,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e1ed495/58bf7d6f12674bf99298f2f1f8e20354/FLAG78ea2ba13 [2019-10-13 18:04:21,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e1ed495/58bf7d6f12674bf99298f2f1f8e20354 [2019-10-13 18:04:21,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:04:21,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:04:21,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:21,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:04:21,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:04:21,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:21" (1/1) ... [2019-10-13 18:04:21,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d46bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:21, skipping insertion in model container [2019-10-13 18:04:21,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:21" (1/1) ... [2019-10-13 18:04:21,684 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:04:21,767 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:04:22,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:22,605 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:04:22,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:22,918 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:04:22,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22 WrapperNode [2019-10-13 18:04:22,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:22,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:04:22,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:04:22,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:04:22,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (1/1) ... [2019-10-13 18:04:22,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (1/1) ... [2019-10-13 18:04:22,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (1/1) ... [2019-10-13 18:04:22,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (1/1) ... [2019-10-13 18:04:23,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (1/1) ... [2019-10-13 18:04:23,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (1/1) ... [2019-10-13 18:04:23,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (1/1) ... [2019-10-13 18:04:23,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:04:23,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:04:23,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:04:23,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:04:23,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (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 18:04:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:04:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:04:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:04:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:04:23,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:04:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:04:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:04:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:04:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:04:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:04:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:04:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:04:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:04:26,709 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:04:26,710 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:04:26,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:26 BoogieIcfgContainer [2019-10-13 18:04:26,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:04:26,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:04:26,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:04:26,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:04:26,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:04:21" (1/3) ... [2019-10-13 18:04:26,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c77d8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:26, skipping insertion in model container [2019-10-13 18:04:26,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:22" (2/3) ... [2019-10-13 18:04:26,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c77d8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:26, skipping insertion in model container [2019-10-13 18:04:26,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:26" (3/3) ... [2019-10-13 18:04:26,719 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label49.c [2019-10-13 18:04:26,729 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:04:26,737 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:04:26,749 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:04:26,781 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:04:26,781 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:04:26,782 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:04:26,782 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:04:26,782 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:04:26,782 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:04:26,783 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:04:26,783 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:04:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-10-13 18:04:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 18:04:26,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:26,853 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] [2019-10-13 18:04:26,855 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:26,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:26,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1661413296, now seen corresponding path program 1 times [2019-10-13 18:04:26,876 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:26,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74061357] [2019-10-13 18:04:26,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:26,878 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:26,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:27,458 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 18:04:27,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74061357] [2019-10-13 18:04:27,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:27,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:04:27,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368731802] [2019-10-13 18:04:27,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:04:27,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:27,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:04:27,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:04:27,483 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2019-10-13 18:04:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:34,634 INFO L93 Difference]: Finished difference Result 1568 states and 2863 transitions. [2019-10-13 18:04:34,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:04:34,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-10-13 18:04:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:34,671 INFO L225 Difference]: With dead ends: 1568 [2019-10-13 18:04:34,671 INFO L226 Difference]: Without dead ends: 1048 [2019-10-13 18:04:34,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:04:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2019-10-13 18:04:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1025. [2019-10-13 18:04:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2019-10-13 18:04:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1590 transitions. [2019-10-13 18:04:34,804 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1590 transitions. Word has length 58 [2019-10-13 18:04:34,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:34,804 INFO L462 AbstractCegarLoop]: Abstraction has 1025 states and 1590 transitions. [2019-10-13 18:04:34,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:04:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1590 transitions. [2019-10-13 18:04:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 18:04:34,812 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:34,812 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, 1, 1, 1, 1, 1, 1, 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 18:04:34,812 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:34,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:34,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1221807989, now seen corresponding path program 1 times [2019-10-13 18:04:34,813 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:34,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217574542] [2019-10-13 18:04:34,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:34,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:34,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:35,088 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217574542] [2019-10-13 18:04:35,089 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:35,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:04:35,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856749730] [2019-10-13 18:04:35,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:04:35,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:35,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:04:35,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:04:35,094 INFO L87 Difference]: Start difference. First operand 1025 states and 1590 transitions. Second operand 8 states. [2019-10-13 18:04:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:40,464 INFO L93 Difference]: Finished difference Result 3048 states and 4814 transitions. [2019-10-13 18:04:40,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:04:40,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 130 [2019-10-13 18:04:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:40,482 INFO L225 Difference]: With dead ends: 3048 [2019-10-13 18:04:40,483 INFO L226 Difference]: Without dead ends: 2029 [2019-10-13 18:04:40,487 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:04:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2019-10-13 18:04:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1671. [2019-10-13 18:04:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2019-10-13 18:04:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2347 transitions. [2019-10-13 18:04:40,563 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2347 transitions. Word has length 130 [2019-10-13 18:04:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:40,566 INFO L462 AbstractCegarLoop]: Abstraction has 1671 states and 2347 transitions. [2019-10-13 18:04:40,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:04:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2347 transitions. [2019-10-13 18:04:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 18:04:40,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:40,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:40,579 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash -78025861, now seen corresponding path program 1 times [2019-10-13 18:04:40,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:40,581 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066754940] [2019-10-13 18:04:40,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:40,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:40,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:40,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066754940] [2019-10-13 18:04:40,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615466694] [2019-10-13 18:04:40,876 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 18:04:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:40,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:04:40,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:41,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:04:41,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:04:41,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426874985] [2019-10-13 18:04:41,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:04:41,050 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:41,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:04:41,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:04:41,050 INFO L87 Difference]: Start difference. First operand 1671 states and 2347 transitions. Second operand 3 states. [2019-10-13 18:04:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:43,777 INFO L93 Difference]: Finished difference Result 4892 states and 6988 transitions. [2019-10-13 18:04:43,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:04:43,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-10-13 18:04:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:43,800 INFO L225 Difference]: With dead ends: 4892 [2019-10-13 18:04:43,800 INFO L226 Difference]: Without dead ends: 3227 [2019-10-13 18:04:43,805 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:04:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2019-10-13 18:04:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2918. [2019-10-13 18:04:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2918 states. [2019-10-13 18:04:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 3838 transitions. [2019-10-13 18:04:43,893 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 3838 transitions. Word has length 138 [2019-10-13 18:04:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:43,894 INFO L462 AbstractCegarLoop]: Abstraction has 2918 states and 3838 transitions. [2019-10-13 18:04:43,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:04:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 3838 transitions. [2019-10-13 18:04:43,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 18:04:43,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:43,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:44,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:44,101 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash 90955185, now seen corresponding path program 1 times [2019-10-13 18:04:44,103 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:44,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108709677] [2019-10-13 18:04:44,104 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:44,104 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:44,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:44,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108709677] [2019-10-13 18:04:44,379 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:44,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:04:44,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422136786] [2019-10-13 18:04:44,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:04:44,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:44,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:04:44,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:04:44,382 INFO L87 Difference]: Start difference. First operand 2918 states and 3838 transitions. Second operand 9 states. [2019-10-13 18:04:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:50,858 INFO L93 Difference]: Finished difference Result 8710 states and 11711 transitions. [2019-10-13 18:04:50,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:04:50,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 144 [2019-10-13 18:04:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:50,889 INFO L225 Difference]: With dead ends: 8710 [2019-10-13 18:04:50,890 INFO L226 Difference]: Without dead ends: 5798 [2019-10-13 18:04:50,899 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:04:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2019-10-13 18:04:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5162. [2019-10-13 18:04:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5162 states. [2019-10-13 18:04:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 6378 transitions. [2019-10-13 18:04:51,155 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 6378 transitions. Word has length 144 [2019-10-13 18:04:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:51,155 INFO L462 AbstractCegarLoop]: Abstraction has 5162 states and 6378 transitions. [2019-10-13 18:04:51,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:04:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 6378 transitions. [2019-10-13 18:04:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-10-13 18:04:51,158 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:51,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:51,159 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:51,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:51,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1726783468, now seen corresponding path program 1 times [2019-10-13 18:04:51,160 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:51,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128187895] [2019-10-13 18:04:51,160 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:51,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:51,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 18:04:51,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128187895] [2019-10-13 18:04:51,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281801515] [2019-10-13 18:04:51,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:51,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 18:04:51,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 18:04:51,896 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:04:51,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-10-13 18:04:51,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304690771] [2019-10-13 18:04:51,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:04:51,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:51,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:04:51,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:04:51,899 INFO L87 Difference]: Start difference. First operand 5162 states and 6378 transitions. Second operand 8 states. [2019-10-13 18:04:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:57,869 INFO L93 Difference]: Finished difference Result 15994 states and 20276 transitions. [2019-10-13 18:04:57,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:04:57,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2019-10-13 18:04:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:57,961 INFO L225 Difference]: With dead ends: 15994 [2019-10-13 18:04:57,962 INFO L226 Difference]: Without dead ends: 10838 [2019-10-13 18:04:57,974 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:04:57,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10838 states. [2019-10-13 18:04:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10838 to 9869. [2019-10-13 18:04:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9869 states. [2019-10-13 18:04:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9869 states to 9869 states and 11794 transitions. [2019-10-13 18:04:58,192 INFO L78 Accepts]: Start accepts. Automaton has 9869 states and 11794 transitions. Word has length 258 [2019-10-13 18:04:58,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:58,193 INFO L462 AbstractCegarLoop]: Abstraction has 9869 states and 11794 transitions. [2019-10-13 18:04:58,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:04:58,193 INFO L276 IsEmpty]: Start isEmpty. Operand 9869 states and 11794 transitions. [2019-10-13 18:04:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2019-10-13 18:04:58,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:58,203 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:58,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:58,415 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:58,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:58,416 INFO L82 PathProgramCache]: Analyzing trace with hash -581092111, now seen corresponding path program 1 times [2019-10-13 18:04:58,416 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:58,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217755672] [2019-10-13 18:04:58,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:58,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:58,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:04:58,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217755672] [2019-10-13 18:04:58,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938460677] [2019-10-13 18:04:58,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:58,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:04:58,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:59,087 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:04:59,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:04:59,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119859006] [2019-10-13 18:04:59,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:04:59,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:59,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:04:59,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:04:59,090 INFO L87 Difference]: Start difference. First operand 9869 states and 11794 transitions. Second operand 11 states.