java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:03:08,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:03:08,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:03:08,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:03:08,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:03:08,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:03:08,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:03:08,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:03:08,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:03:08,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:03:08,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:03:08,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:03:08,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:03:08,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:03:08,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:03:08,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:03:08,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:03:08,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:03:08,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:03:08,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:03:08,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:03:08,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:03:08,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:03:08,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:03:08,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:03:08,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:03:08,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:03:08,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:03:08,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:03:08,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:03:08,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:03:08,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:03:08,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:03:08,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:03:08,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:03:08,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:03:08,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:03:08,571 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:03:08,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:03:08,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:03:08,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:03:08,573 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:03:08,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:03:08,573 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:03:08,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:03:08,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:03:08,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:03:08,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:03:08,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:03:08,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:03:08,581 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:03:08,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:03:08,581 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:03:08,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:03:08,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:03:08,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:03:08,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:03:08,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:03:08,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:03:08,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:03:08,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:03:08,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:03:08,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:03:08,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:03:08,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:03:08,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:03:08,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:03:08,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:03:08,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:03:08,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:03:08,890 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:03:08,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2019-10-14 22:03:08,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9c5e02a/54b51a2c14c24ba2a8c6585d9d89d80f/FLAGd72353417 [2019-10-14 22:03:09,652 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:03:09,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2019-10-14 22:03:09,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9c5e02a/54b51a2c14c24ba2a8c6585d9d89d80f/FLAGd72353417 [2019-10-14 22:03:09,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9c5e02a/54b51a2c14c24ba2a8c6585d9d89d80f [2019-10-14 22:03:09,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:03:09,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:03:09,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:03:09,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:03:09,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:03:09,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:09" (1/1) ... [2019-10-14 22:03:09,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f51de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:09, skipping insertion in model container [2019-10-14 22:03:09,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:09" (1/1) ... [2019-10-14 22:03:09,869 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:03:09,960 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:03:10,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:03:10,911 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:03:11,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:03:11,211 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:03:11,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11 WrapperNode [2019-10-14 22:03:11,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:03:11,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:03:11,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:03:11,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:03:11,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (1/1) ... [2019-10-14 22:03:11,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (1/1) ... [2019-10-14 22:03:11,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (1/1) ... [2019-10-14 22:03:11,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (1/1) ... [2019-10-14 22:03:11,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (1/1) ... [2019-10-14 22:03:11,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (1/1) ... [2019-10-14 22:03:11,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (1/1) ... [2019-10-14 22:03:11,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:03:11,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:03:11,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:03:11,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:03:11,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:03:11,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:03:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:03:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:03:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:03:11,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:03:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:03:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:03:11,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:03:15,136 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:03:15,137 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:03:15,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:15 BoogieIcfgContainer [2019-10-14 22:03:15,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:03:15,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:03:15,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:03:15,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:03:15,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:09" (1/3) ... [2019-10-14 22:03:15,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce79fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:15, skipping insertion in model container [2019-10-14 22:03:15,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:11" (2/3) ... [2019-10-14 22:03:15,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce79fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:15, skipping insertion in model container [2019-10-14 22:03:15,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:15" (3/3) ... [2019-10-14 22:03:15,148 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label40.c [2019-10-14 22:03:15,158 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:03:15,168 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:03:15,180 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:03:15,213 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:03:15,213 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:03:15,214 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:03:15,214 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:03:15,214 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:03:15,214 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:03:15,214 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:03:15,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:03:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-10-14 22:03:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-14 22:03:15,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:15,254 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] [2019-10-14 22:03:15,256 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:15,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1190948056, now seen corresponding path program 1 times [2019-10-14 22:03:15,273 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:15,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592957230] [2019-10-14 22:03:15,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:15,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:15,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:15,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592957230] [2019-10-14 22:03:15,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:03:15,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:03:15,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316413649] [2019-10-14 22:03:15,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:03:15,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:15,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:03:15,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:03:15,698 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2019-10-14 22:03:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:22,476 INFO L93 Difference]: Finished difference Result 1513 states and 2781 transitions. [2019-10-14 22:03:22,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:03:22,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-14 22:03:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:22,507 INFO L225 Difference]: With dead ends: 1513 [2019-10-14 22:03:22,507 INFO L226 Difference]: Without dead ends: 1007 [2019-10-14 22:03:22,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:03:22,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2019-10-14 22:03:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 999. [2019-10-14 22:03:22,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2019-10-14 22:03:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1377 transitions. [2019-10-14 22:03:22,681 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1377 transitions. Word has length 32 [2019-10-14 22:03:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:22,682 INFO L462 AbstractCegarLoop]: Abstraction has 999 states and 1377 transitions. [2019-10-14 22:03:22,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:03:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1377 transitions. [2019-10-14 22:03:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-14 22:03:22,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:22,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:03:22,688 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:22,688 INFO L82 PathProgramCache]: Analyzing trace with hash 679417420, now seen corresponding path program 1 times [2019-10-14 22:03:22,689 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:22,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905854598] [2019-10-14 22:03:22,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:22,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:22,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:23,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905854598] [2019-10-14 22:03:23,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187169851] [2019-10-14 22:03:23,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:23,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 22:03:23,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:03:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:23,257 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:03:23,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-10-14 22:03:23,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836367164] [2019-10-14 22:03:23,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:03:23,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:23,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:03:23,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:03:23,260 INFO L87 Difference]: Start difference. First operand 999 states and 1377 transitions. Second operand 5 states. [2019-10-14 22:03:29,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:29,392 INFO L93 Difference]: Finished difference Result 2330 states and 3155 transitions. [2019-10-14 22:03:29,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:03:29,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-14 22:03:29,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:29,403 INFO L225 Difference]: With dead ends: 2330 [2019-10-14 22:03:29,403 INFO L226 Difference]: Without dead ends: 1337 [2019-10-14 22:03:29,409 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:03:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2019-10-14 22:03:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1324. [2019-10-14 22:03:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2019-10-14 22:03:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1735 transitions. [2019-10-14 22:03:29,464 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1735 transitions. Word has length 101 [2019-10-14 22:03:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:29,465 INFO L462 AbstractCegarLoop]: Abstraction has 1324 states and 1735 transitions. [2019-10-14 22:03:29,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:03:29,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1735 transitions. [2019-10-14 22:03:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-14 22:03:29,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:29,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:03:29,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:29,675 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:29,676 INFO L82 PathProgramCache]: Analyzing trace with hash -603532513, now seen corresponding path program 1 times [2019-10-14 22:03:29,676 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:29,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847818437] [2019-10-14 22:03:29,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:29,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:29,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:30,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847818437] [2019-10-14 22:03:30,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:03:30,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:03:30,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764106866] [2019-10-14 22:03:30,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:03:30,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:30,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:03:30,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:03:30,071 INFO L87 Difference]: Start difference. First operand 1324 states and 1735 transitions. Second operand 9 states. [2019-10-14 22:03:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:37,189 INFO L93 Difference]: Finished difference Result 3952 states and 5514 transitions. [2019-10-14 22:03:37,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:03:37,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-14 22:03:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:37,212 INFO L225 Difference]: With dead ends: 3952 [2019-10-14 22:03:37,213 INFO L226 Difference]: Without dead ends: 2941 [2019-10-14 22:03:37,216 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:03:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2019-10-14 22:03:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2604. [2019-10-14 22:03:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2019-10-14 22:03:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3401 transitions. [2019-10-14 22:03:37,314 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3401 transitions. Word has length 106 [2019-10-14 22:03:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:37,315 INFO L462 AbstractCegarLoop]: Abstraction has 2604 states and 3401 transitions. [2019-10-14 22:03:37,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:03:37,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3401 transitions. [2019-10-14 22:03:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-14 22:03:37,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:37,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:03:37,325 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:37,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:37,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1976934134, now seen corresponding path program 1 times [2019-10-14 22:03:37,325 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:37,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80272783] [2019-10-14 22:03:37,326 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:37,326 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:37,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:37,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80272783] [2019-10-14 22:03:37,672 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727587492] [2019-10-14 22:03:37,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:37,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 22:03:37,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:03:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:37,868 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:03:37,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2019-10-14 22:03:37,869 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246160531] [2019-10-14 22:03:37,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 22:03:37,872 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:37,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 22:03:37,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:03:37,872 INFO L87 Difference]: Start difference. First operand 2604 states and 3401 transitions. Second operand 13 states.