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/Problem11_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 17:59:48,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 17:59:48,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 17:59:48,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 17:59:48,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 17:59:48,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 17:59:48,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 17:59:48,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 17:59:48,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 17:59:48,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 17:59:48,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 17:59:48,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 17:59:48,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 17:59:48,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 17:59:48,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 17:59:48,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 17:59:48,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 17:59:48,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 17:59:48,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 17:59:48,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 17:59:48,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 17:59:48,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 17:59:48,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 17:59:48,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 17:59:48,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 17:59:48,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 17:59:48,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 17:59:48,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 17:59:48,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 17:59:48,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 17:59:48,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 17:59:48,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 17:59:48,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 17:59:48,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 17:59:48,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 17:59:48,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 17:59:48,502 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 17:59:48,523 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 17:59:48,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 17:59:48,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 17:59:48,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 17:59:48,525 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 17:59:48,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 17:59:48,526 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 17:59:48,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 17:59:48,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 17:59:48,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 17:59:48,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 17:59:48,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 17:59:48,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 17:59:48,528 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 17:59:48,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 17:59:48,529 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 17:59:48,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 17:59:48,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 17:59:48,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 17:59:48,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 17:59:48,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 17:59:48,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 17:59:48,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 17:59:48,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 17:59:48,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 17:59:48,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 17:59:48,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 17:59:48,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 17:59:48,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 17:59:48,796 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 17:59:48,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 17:59:48,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 17:59:48,822 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 17:59:48,822 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 17:59:48,823 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label17.c [2019-10-13 17:59:48,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247fd4bc4/0d03b7e405fe49a3b61e3bf4becc40b8/FLAG88b3666eb [2019-10-13 17:59:49,521 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 17:59:49,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label17.c [2019-10-13 17:59:49,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247fd4bc4/0d03b7e405fe49a3b61e3bf4becc40b8/FLAG88b3666eb [2019-10-13 17:59:49,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247fd4bc4/0d03b7e405fe49a3b61e3bf4becc40b8 [2019-10-13 17:59:49,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 17:59:49,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 17:59:49,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 17:59:49,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 17:59:49,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 17:59:49,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:49" (1/1) ... [2019-10-13 17:59:49,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191613fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:49, skipping insertion in model container [2019-10-13 17:59:49,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:49" (1/1) ... [2019-10-13 17:59:49,782 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 17:59:49,856 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 17:59:50,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:59:50,499 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 17:59:50,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 17:59:50,815 INFO L192 MainTranslator]: Completed translation [2019-10-13 17:59:50,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50 WrapperNode [2019-10-13 17:59:50,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 17:59:50,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 17:59:50,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 17:59:50,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 17:59:50,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (1/1) ... [2019-10-13 17:59:50,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (1/1) ... [2019-10-13 17:59:50,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (1/1) ... [2019-10-13 17:59:50,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (1/1) ... [2019-10-13 17:59:50,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (1/1) ... [2019-10-13 17:59:51,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (1/1) ... [2019-10-13 17:59:51,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (1/1) ... [2019-10-13 17:59:51,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 17:59:51,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 17:59:51,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 17:59:51,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 17:59:51,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (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 17:59:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 17:59:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 17:59:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 17:59:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 17:59:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 17:59:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 17:59:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 17:59:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 17:59:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 17:59:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 17:59:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 17:59:52,923 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 17:59:52,924 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 17:59:52,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:52 BoogieIcfgContainer [2019-10-13 17:59:52,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 17:59:52,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 17:59:52,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 17:59:52,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 17:59:52,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:59:49" (1/3) ... [2019-10-13 17:59:52,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4950ff3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:52, skipping insertion in model container [2019-10-13 17:59:52,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:50" (2/3) ... [2019-10-13 17:59:52,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4950ff3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:52, skipping insertion in model container [2019-10-13 17:59:52,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:52" (3/3) ... [2019-10-13 17:59:52,973 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label17.c [2019-10-13 17:59:52,983 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 17:59:52,991 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 17:59:53,004 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 17:59:53,031 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 17:59:53,031 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 17:59:53,032 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 17:59:53,032 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 17:59:53,032 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 17:59:53,032 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 17:59:53,032 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 17:59:53,033 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 17:59:53,059 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-13 17:59:53,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 17:59:53,067 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:53,068 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] [2019-10-13 17:59:53,069 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:53,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2013037499, now seen corresponding path program 1 times [2019-10-13 17:59:53,084 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:53,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120695787] [2019-10-13 17:59:53,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:53,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:53,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:53,398 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 17:59:53,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120695787] [2019-10-13 17:59:53,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 17:59:53,400 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 17:59:53,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508212818] [2019-10-13 17:59:53,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 17:59:53,405 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:53,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 17:59:53,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 17:59:53,421 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-10-13 17:59:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:56,430 INFO L93 Difference]: Finished difference Result 1004 states and 1802 transitions. [2019-10-13 17:59:56,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 17:59:56,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-10-13 17:59:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:56,458 INFO L225 Difference]: With dead ends: 1004 [2019-10-13 17:59:56,458 INFO L226 Difference]: Without dead ends: 644 [2019-10-13 17:59:56,476 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 17:59:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-13 17:59:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 623. [2019-10-13 17:59:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 17:59:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 957 transitions. [2019-10-13 17:59:56,626 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 957 transitions. Word has length 44 [2019-10-13 17:59:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:56,627 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 957 transitions. [2019-10-13 17:59:56,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 17:59:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 957 transitions. [2019-10-13 17:59:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 17:59:56,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:56,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:56,649 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:56,649 INFO L82 PathProgramCache]: Analyzing trace with hash -697152023, now seen corresponding path program 1 times [2019-10-13 17:59:56,650 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:56,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733867097] [2019-10-13 17:59:56,650 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:56,650 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:56,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:57,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733867097] [2019-10-13 17:59:57,003 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 17:59:57,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 17:59:57,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782672332] [2019-10-13 17:59:57,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 17:59:57,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 17:59:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-13 17:59:57,007 INFO L87 Difference]: Start difference. First operand 623 states and 957 transitions. Second operand 7 states. [2019-10-13 17:59:59,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 17:59:59,556 INFO L93 Difference]: Finished difference Result 1867 states and 2956 transitions. [2019-10-13 17:59:59,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 17:59:59,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-13 17:59:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 17:59:59,566 INFO L225 Difference]: With dead ends: 1867 [2019-10-13 17:59:59,567 INFO L226 Difference]: Without dead ends: 1250 [2019-10-13 17:59:59,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 17:59:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2019-10-13 17:59:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1020. [2019-10-13 17:59:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2019-10-13 17:59:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1452 transitions. [2019-10-13 17:59:59,625 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1452 transitions. Word has length 119 [2019-10-13 17:59:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 17:59:59,625 INFO L462 AbstractCegarLoop]: Abstraction has 1020 states and 1452 transitions. [2019-10-13 17:59:59,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 17:59:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1452 transitions. [2019-10-13 17:59:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 17:59:59,628 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 17:59:59,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:59,629 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 17:59:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 17:59:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash 957639322, now seen corresponding path program 1 times [2019-10-13 17:59:59,629 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 17:59:59,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233933422] [2019-10-13 17:59:59,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:59,630 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 17:59:59,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 17:59:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 17:59:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 17:59:59,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233933422] [2019-10-13 17:59:59,945 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 17:59:59,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 17:59:59,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712984460] [2019-10-13 17:59:59,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 17:59:59,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 17:59:59,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 17:59:59,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 17:59:59,951 INFO L87 Difference]: Start difference. First operand 1020 states and 1452 transitions. Second operand 8 states. [2019-10-13 18:00:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:00:02,780 INFO L93 Difference]: Finished difference Result 3063 states and 4491 transitions. [2019-10-13 18:00:02,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:00:02,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2019-10-13 18:00:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:00:02,791 INFO L225 Difference]: With dead ends: 3063 [2019-10-13 18:00:02,791 INFO L226 Difference]: Without dead ends: 2049 [2019-10-13 18:00:02,794 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:00:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2019-10-13 18:00:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1822. [2019-10-13 18:00:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1822 states. [2019-10-13 18:00:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2445 transitions. [2019-10-13 18:00:02,857 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2445 transitions. Word has length 132 [2019-10-13 18:00:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:00:02,860 INFO L462 AbstractCegarLoop]: Abstraction has 1822 states and 2445 transitions. [2019-10-13 18:00:02,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:00:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2445 transitions. [2019-10-13 18:00:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 18:00:02,865 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:02,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:02,866 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:02,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:02,866 INFO L82 PathProgramCache]: Analyzing trace with hash -523045564, now seen corresponding path program 1 times [2019-10-13 18:00:02,866 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:02,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987389339] [2019-10-13 18:00:02,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:02,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:02,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:00:03,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987389339] [2019-10-13 18:00:03,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787345349] [2019-10-13 18:00:03,292 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 18:00:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:03,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:00:03,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:00:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:00:03,548 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:00:03,549 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2019-10-13 18:00:03,549 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264933897] [2019-10-13 18:00:03,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:00:03,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:03,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:00:03,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:00:03,551 INFO L87 Difference]: Start difference. First operand 1822 states and 2445 transitions. Second operand 3 states. [2019-10-13 18:00:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:00:04,743 INFO L93 Difference]: Finished difference Result 4442 states and 6217 transitions. [2019-10-13 18:00:04,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:00:04,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 18:00:04,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:00:04,763 INFO L225 Difference]: With dead ends: 4442 [2019-10-13 18:00:04,763 INFO L226 Difference]: Without dead ends: 2814 [2019-10-13 18:00:04,768 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:00:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2019-10-13 18:00:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2809. [2019-10-13 18:00:04,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2809 states. [2019-10-13 18:00:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3803 transitions. [2019-10-13 18:00:04,854 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3803 transitions. Word has length 175 [2019-10-13 18:00:04,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:00:04,856 INFO L462 AbstractCegarLoop]: Abstraction has 2809 states and 3803 transitions. [2019-10-13 18:00:04,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:00:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3803 transitions. [2019-10-13 18:00:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 18:00:04,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:04,861 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:00:05,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:00:05,067 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:05,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1124795769, now seen corresponding path program 1 times [2019-10-13 18:00:05,068 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:05,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260344345] [2019-10-13 18:00:05,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:05,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:05,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:00:05,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260344345] [2019-10-13 18:00:05,440 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405266725] [2019-10-13 18:00:05,440 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 18:00:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:05,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 18:00:05,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:00:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:00:05,677 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:00:05,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2019-10-13 18:00:05,677 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076947619] [2019-10-13 18:00:05,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:00:05,679 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:05,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:00:05,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:00:05,680 INFO L87 Difference]: Start difference. First operand 2809 states and 3803 transitions. Second operand 9 states. [2019-10-13 18:00:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:00:07,750 INFO L93 Difference]: Finished difference Result 5448 states and 7595 transitions. [2019-10-13 18:00:07,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:00:07,751 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 200 [2019-10-13 18:00:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:00:07,766 INFO L225 Difference]: With dead ends: 5448 [2019-10-13 18:00:07,766 INFO L226 Difference]: Without dead ends: 2833 [2019-10-13 18:00:07,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:00:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2019-10-13 18:00:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2788. [2019-10-13 18:00:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2019-10-13 18:00:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3468 transitions. [2019-10-13 18:00:07,847 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3468 transitions. Word has length 200 [2019-10-13 18:00:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:00:07,848 INFO L462 AbstractCegarLoop]: Abstraction has 2788 states and 3468 transitions. [2019-10-13 18:00:07,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:00:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3468 transitions. [2019-10-13 18:00:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 18:00:07,852 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:07,853 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:00:08,064 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:00:08,065 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:08,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1183490646, now seen corresponding path program 1 times [2019-10-13 18:00:08,072 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:08,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402800781] [2019-10-13 18:00:08,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:08,074 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:08,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 18:00:08,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402800781] [2019-10-13 18:00:08,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12409352] [2019-10-13 18:00:08,316 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 18:00:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:08,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:00:08,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:00:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 18:00:08,490 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:00:08,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:00:08,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673834628] [2019-10-13 18:00:08,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:00:08,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:08,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:00:08,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:00:08,493 INFO L87 Difference]: Start difference. First operand 2788 states and 3468 transitions. Second operand 3 states. [2019-10-13 18:00:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:00:09,548 INFO L93 Difference]: Finished difference Result 7307 states and 9349 transitions. [2019-10-13 18:00:09,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:00:09,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-13 18:00:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:00:09,570 INFO L225 Difference]: With dead ends: 7307 [2019-10-13 18:00:09,571 INFO L226 Difference]: Without dead ends: 4713 [2019-10-13 18:00:09,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:00:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2019-10-13 18:00:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4522. [2019-10-13 18:00:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4522 states. [2019-10-13 18:00:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 5741 transitions. [2019-10-13 18:00:09,683 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 5741 transitions. Word has length 205 [2019-10-13 18:00:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:00:09,683 INFO L462 AbstractCegarLoop]: Abstraction has 4522 states and 5741 transitions. [2019-10-13 18:00:09,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:00:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 5741 transitions. [2019-10-13 18:00:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-13 18:00:09,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:09,693 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:00:09,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:00:09,904 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:09,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:09,905 INFO L82 PathProgramCache]: Analyzing trace with hash 608776500, now seen corresponding path program 1 times [2019-10-13 18:00:09,905 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:09,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600593314] [2019-10-13 18:00:09,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:09,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:09,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 5 proven. 141 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:00:10,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600593314] [2019-10-13 18:00:10,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120803096] [2019-10-13 18:00:10,719 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 [2019-10-13 18:00:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:10,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 18:00:10,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:00:10,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 18:00:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 18:00:11,039 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:00:11,039 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2019-10-13 18:00:11,039 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589998425] [2019-10-13 18:00:11,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:00:11,040 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:11,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:00:11,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:00:11,041 INFO L87 Difference]: Start difference. First operand 4522 states and 5741 transitions. Second operand 5 states. [2019-10-13 18:00:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:00:12,500 INFO L93 Difference]: Finished difference Result 9103 states and 11667 transitions. [2019-10-13 18:00:12,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:00:12,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2019-10-13 18:00:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:00:12,522 INFO L225 Difference]: With dead ends: 9103 [2019-10-13 18:00:12,522 INFO L226 Difference]: Without dead ends: 4775 [2019-10-13 18:00:12,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2019-10-13 18:00:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2019-10-13 18:00:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4734. [2019-10-13 18:00:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4734 states. [2019-10-13 18:00:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 5986 transitions. [2019-10-13 18:00:12,667 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 5986 transitions. Word has length 283 [2019-10-13 18:00:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:00:12,667 INFO L462 AbstractCegarLoop]: Abstraction has 4734 states and 5986 transitions. [2019-10-13 18:00:12,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:00:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 5986 transitions. [2019-10-13 18:00:12,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2019-10-13 18:00:12,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:12,680 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:00:12,885 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:00:12,886 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:12,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1644707978, now seen corresponding path program 1 times [2019-10-13 18:00:12,886 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:12,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853497985] [2019-10-13 18:00:12,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:12,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:12,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 179 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:00:13,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853497985] [2019-10-13 18:00:13,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190860933] [2019-10-13 18:00:13,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:00:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:13,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 18:00:13,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:00:13,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:13,499 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:13,949 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~a29~0_506 Int)) (let ((.cse1 (+ v_~a29~0_506 69157))) (let ((.cse0 (mod .cse1 299861))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ .cse0 277)) (not (= .cse0 0)) (< .cse1 0))))) (exists ((v_~a29~0_506 Int)) (let ((.cse2 (+ v_~a29~0_506 69157))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ (mod .cse2 299861) 300138)) (<= 0 .cse2)))) (exists ((v_~a29~0_506 Int)) (let ((.cse3 (mod (+ v_~a29~0_506 69157) 299861))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ .cse3 300138)) (= .cse3 0))))) is different from true [2019-10-13 18:00:18,074 WARN L191 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 37 DAG size of output: 15 [2019-10-13 18:00:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 4 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-10-13 18:00:18,258 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:00:18,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-10-13 18:00:18,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636419173] [2019-10-13 18:00:18,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 18:00:18,260 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:18,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 18:00:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=194, Unknown=2, NotChecked=28, Total=272 [2019-10-13 18:00:18,261 INFO L87 Difference]: Start difference. First operand 4734 states and 5986 transitions. Second operand 17 states. [2019-10-13 18:00:18,473 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-10-13 18:00:22,999 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-10-13 18:00:25,129 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22