/usr/bin/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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:18:58,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:18:58,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:18:58,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:18:58,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:18:58,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:18:58,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:18:58,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:18:58,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:18:58,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:18:58,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:18:58,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:18:58,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:18:58,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:18:58,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:18:58,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:18:58,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:18:58,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:18:58,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:18:58,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:18:58,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:18:58,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:18:58,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:18:58,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:18:58,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:18:58,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:18:58,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:18:58,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:18:58,472 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 [2019-11-06 19:18:58,504 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:18:58,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:18:58,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:18:58,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:18:58,508 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:18:58,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:18:58,508 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:18:58,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:18:58,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:18:58,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:18:58,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:18:58,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:18:58,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:18:58,513 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:18:58,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:18:58,513 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:18:58,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:18:58,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:18:58,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:18:58,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:18:58,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:18:58,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:18:58,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:18:58,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:18:58,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:18:58,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:18:58,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:18:58,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:18:58,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:18:58,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:18:58,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:18:58,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:18:58,838 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:18:58,838 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:18:58,839 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label47.c [2019-11-06 19:18:58,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7224ff798/3fdb8122cd21490b882006c4507268ae/FLAGb509a4248 [2019-11-06 19:18:59,622 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:18:59,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label47.c [2019-11-06 19:18:59,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7224ff798/3fdb8122cd21490b882006c4507268ae/FLAGb509a4248 [2019-11-06 19:18:59,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7224ff798/3fdb8122cd21490b882006c4507268ae [2019-11-06 19:18:59,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:18:59,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:18:59,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:18:59,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:18:59,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:18:59,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:18:59" (1/1) ... [2019-11-06 19:18:59,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bce34ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:18:59, skipping insertion in model container [2019-11-06 19:18:59,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:18:59" (1/1) ... [2019-11-06 19:18:59,793 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:18:59,866 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:19:00,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:19:00,859 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:19:01,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:19:01,195 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:19:01,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01 WrapperNode [2019-11-06 19:19:01,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:19:01,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:19:01,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:19:01,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:19:01,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (1/1) ... [2019-11-06 19:19:01,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (1/1) ... [2019-11-06 19:19:01,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (1/1) ... [2019-11-06 19:19:01,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (1/1) ... [2019-11-06 19:19:01,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (1/1) ... [2019-11-06 19:19:01,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (1/1) ... [2019-11-06 19:19:01,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (1/1) ... [2019-11-06 19:19:01,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:19:01,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:19:01,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:19:01,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:19:01,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (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 [2019-11-06 19:19:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:19:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:19:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:19:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:19:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:19:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:19:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:19:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:19:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:19:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:19:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:19:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:19:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:19:03,826 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:19:03,827 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:19:03,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:19:03 BoogieIcfgContainer [2019-11-06 19:19:03,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:19:03,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:19:03,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:19:03,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:19:03,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:18:59" (1/3) ... [2019-11-06 19:19:03,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a8f104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:19:03, skipping insertion in model container [2019-11-06 19:19:03,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:01" (2/3) ... [2019-11-06 19:19:03,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a8f104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:19:03, skipping insertion in model container [2019-11-06 19:19:03,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:19:03" (3/3) ... [2019-11-06 19:19:03,840 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label47.c [2019-11-06 19:19:03,851 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:19:03,864 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:19:03,876 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:19:03,929 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:19:03,929 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:19:03,929 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:19:03,930 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:19:03,930 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:19:03,930 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:19:03,930 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:19:03,930 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:19:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-11-06 19:19:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 19:19:03,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:19:03,991 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:19:03,994 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:19:04,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:19:04,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1116751826, now seen corresponding path program 1 times [2019-11-06 19:19:04,017 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:19:04,017 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035540469] [2019-11-06 19:19:04,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:19:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:19:04,626 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035540469] [2019-11-06 19:19:04,627 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:19:04,628 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:19:04,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118801690] [2019-11-06 19:19:04,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:19:04,636 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:19:04,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:19:04,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:19:04,654 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-11-06 19:19:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:19:09,958 INFO L93 Difference]: Finished difference Result 1515 states and 2850 transitions. [2019-11-06 19:19:09,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:19:09,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-11-06 19:19:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:19:10,004 INFO L225 Difference]: With dead ends: 1515 [2019-11-06 19:19:10,005 INFO L226 Difference]: Without dead ends: 1038 [2019-11-06 19:19:10,021 INFO L630 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 [2019-11-06 19:19:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-11-06 19:19:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-11-06 19:19:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-11-06 19:19:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1619 transitions. [2019-11-06 19:19:10,147 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1619 transitions. Word has length 71 [2019-11-06 19:19:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:19:10,150 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1619 transitions. [2019-11-06 19:19:10,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:19:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1619 transitions. [2019-11-06 19:19:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-06 19:19:10,165 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:19:10,166 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 19:19:10,167 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:19:10,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:19:10,168 INFO L82 PathProgramCache]: Analyzing trace with hash -533653573, now seen corresponding path program 1 times [2019-11-06 19:19:10,168 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:19:10,168 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839754061] [2019-11-06 19:19:10,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:19:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:19:10,539 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839754061] [2019-11-06 19:19:10,539 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:19:10,539 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:19:10,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062599434] [2019-11-06 19:19:10,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:19:10,542 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:19:10,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:19:10,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:19:10,543 INFO L87 Difference]: Start difference. First operand 1031 states and 1619 transitions. Second operand 9 states. [2019-11-06 19:19:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:19:14,738 INFO L93 Difference]: Finished difference Result 3118 states and 4964 transitions. [2019-11-06 19:19:14,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 19:19:14,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2019-11-06 19:19:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:19:14,755 INFO L225 Difference]: With dead ends: 3118 [2019-11-06 19:19:14,755 INFO L226 Difference]: Without dead ends: 2093 [2019-11-06 19:19:14,760 INFO L630 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 [2019-11-06 19:19:14,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2019-11-06 19:19:14,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2075. [2019-11-06 19:19:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2075 states. [2019-11-06 19:19:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2956 transitions. [2019-11-06 19:19:14,844 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2956 transitions. Word has length 154 [2019-11-06 19:19:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:19:14,845 INFO L462 AbstractCegarLoop]: Abstraction has 2075 states and 2956 transitions. [2019-11-06 19:19:14,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:19:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2956 transitions. [2019-11-06 19:19:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-06 19:19:14,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:19:14,849 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:19:14,850 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:19:14,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:19:14,850 INFO L82 PathProgramCache]: Analyzing trace with hash -564206834, now seen corresponding path program 1 times [2019-11-06 19:19:14,850 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:19:14,853 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453296380] [2019-11-06 19:19:14,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:19:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 19:19:15,079 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453296380] [2019-11-06 19:19:15,080 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895362663] [2019-11-06 19:19:15,080 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 [2019-11-06 19:19:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:15,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:19:15,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:19:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:19:15,273 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:19:15,273 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-11-06 19:19:15,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114196358] [2019-11-06 19:19:15,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:19:15,275 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:19:15,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:19:15,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:19:15,276 INFO L87 Difference]: Start difference. First operand 2075 states and 2956 transitions. Second operand 3 states. [2019-11-06 19:19:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:19:17,018 INFO L93 Difference]: Finished difference Result 3102 states and 4277 transitions. [2019-11-06 19:19:17,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:19:17,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-06 19:19:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:19:17,039 INFO L225 Difference]: With dead ends: 3102 [2019-11-06 19:19:17,040 INFO L226 Difference]: Without dead ends: 3100 [2019-11-06 19:19:17,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:19:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2019-11-06 19:19:17,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2755. [2019-11-06 19:19:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2019-11-06 19:19:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3884 transitions. [2019-11-06 19:19:17,172 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3884 transitions. Word has length 171 [2019-11-06 19:19:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:19:17,175 INFO L462 AbstractCegarLoop]: Abstraction has 2755 states and 3884 transitions. [2019-11-06 19:19:17,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:19:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3884 transitions. [2019-11-06 19:19:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-11-06 19:19:17,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:19:17,184 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:19:17,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:19:17,390 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:19:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:19:17,390 INFO L82 PathProgramCache]: Analyzing trace with hash 569848127, now seen corresponding path program 1 times [2019-11-06 19:19:17,391 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:19:17,391 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512647138] [2019-11-06 19:19:17,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:19:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 19:19:17,988 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512647138] [2019-11-06 19:19:17,988 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719909711] [2019-11-06 19:19:17,989 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 [2019-11-06 19:19:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:18,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:19:18,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:19:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:19:18,257 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:19:18,257 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-11-06 19:19:18,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692512084] [2019-11-06 19:19:18,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 19:19:18,261 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:19:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 19:19:18,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:19:18,262 INFO L87 Difference]: Start difference. First operand 2755 states and 3884 transitions. Second operand 12 states. [2019-11-06 19:19:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:19:26,108 INFO L93 Difference]: Finished difference Result 7991 states and 11355 transitions. [2019-11-06 19:19:26,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-06 19:19:26,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2019-11-06 19:19:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:19:26,136 INFO L225 Difference]: With dead ends: 7991 [2019-11-06 19:19:26,136 INFO L226 Difference]: Without dead ends: 5242 [2019-11-06 19:19:26,143 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 293 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2019-11-06 19:19:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5242 states. [2019-11-06 19:19:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5242 to 4510. [2019-11-06 19:19:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4510 states. [2019-11-06 19:19:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5583 transitions. [2019-11-06 19:19:26,273 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5583 transitions. Word has length 286 [2019-11-06 19:19:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:19:26,275 INFO L462 AbstractCegarLoop]: Abstraction has 4510 states and 5583 transitions. [2019-11-06 19:19:26,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 19:19:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5583 transitions. [2019-11-06 19:19:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2019-11-06 19:19:26,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:19:26,295 INFO L410 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-11-06 19:19:26,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:19:26,499 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:19:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:19:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1703405511, now seen corresponding path program 1 times [2019-11-06 19:19:26,501 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:19:26,501 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092932554] [2019-11-06 19:19:26,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:19:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 587 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2019-11-06 19:19:27,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092932554] [2019-11-06 19:19:27,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775079859] [2019-11-06 19:19:27,513 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 [2019-11-06 19:19:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:27,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:19:27,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:19:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 590 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2019-11-06 19:19:28,010 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:19:28,011 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-11-06 19:19:28,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203790003] [2019-11-06 19:19:28,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 19:19:28,015 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:19:28,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 19:19:28,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-06 19:19:28,016 INFO L87 Difference]: Start difference. First operand 4510 states and 5583 transitions. Second operand 11 states. [2019-11-06 19:19:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:19:34,508 INFO L93 Difference]: Finished difference Result 10080 states and 12704 transitions. [2019-11-06 19:19:34,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 19:19:34,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 640 [2019-11-06 19:19:34,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:19:34,539 INFO L225 Difference]: With dead ends: 10080 [2019-11-06 19:19:34,539 INFO L226 Difference]: Without dead ends: 5576 [2019-11-06 19:19:34,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2019-11-06 19:19:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2019-11-06 19:19:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5560. [2019-11-06 19:19:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5560 states. [2019-11-06 19:19:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 6810 transitions. [2019-11-06 19:19:34,681 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 6810 transitions. Word has length 640 [2019-11-06 19:19:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:19:34,683 INFO L462 AbstractCegarLoop]: Abstraction has 5560 states and 6810 transitions. [2019-11-06 19:19:34,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 19:19:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 6810 transitions. [2019-11-06 19:19:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2019-11-06 19:19:34,705 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:19:34,706 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:19:34,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:19:34,914 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:19:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:19:34,916 INFO L82 PathProgramCache]: Analyzing trace with hash 319020650, now seen corresponding path program 1 times [2019-11-06 19:19:34,916 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:19:34,916 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887558257] [2019-11-06 19:19:34,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:19:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 324 proven. 20 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2019-11-06 19:19:35,632 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887558257] [2019-11-06 19:19:35,633 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573646184] [2019-11-06 19:19:35,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:19:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:35,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:19:35,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:19:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2019-11-06 19:19:36,073 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:19:36,073 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-11-06 19:19:36,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121875793] [2019-11-06 19:19:36,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:19:36,074 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:19:36,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:19:36,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:19:36,075 INFO L87 Difference]: Start difference. First operand 5560 states and 6810 transitions. Second operand 3 states.