/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:19:43,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:19:43,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:19:43,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:19:43,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:19:43,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:19:43,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:19:43,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:19:43,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:19:43,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:19:43,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:19:43,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:19:43,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:19:43,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:19:43,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:19:43,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:19:43,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:19:43,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:19:43,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:19:43,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:19:43,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:19:43,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:19:43,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:19:43,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:19:43,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:19:43,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:19:43,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:19:43,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:19:43,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 19:19:43,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:19:43,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:19:43,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:19:43,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:19:43,481 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:19:43,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:19:43,481 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:19:43,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:19:43,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:19:43,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:19:43,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:19:43,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:19:43,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:19:43,483 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:19:43,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:19:43,483 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:19:43,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:19:43,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:19:43,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:19:43,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:19:43,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:19:43,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:19:43,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:19:43,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:19:43,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:19:43,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:19:43,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:19:43,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:19:43,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:19:43,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:19:43,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:19:43,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:19:43,778 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:19:43,778 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:19:43,779 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2019-11-06 19:19:43,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5d2347e/0b919a9cf5694b8cbf8130575cff4e0a/FLAGac8044d9c [2019-11-06 19:19:44,506 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:19:44,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2019-11-06 19:19:44,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5d2347e/0b919a9cf5694b8cbf8130575cff4e0a/FLAGac8044d9c [2019-11-06 19:19:44,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac5d2347e/0b919a9cf5694b8cbf8130575cff4e0a [2019-11-06 19:19:44,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:19:44,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:19:44,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:19:44,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:19:44,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:19:44,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:19:44" (1/1) ... [2019-11-06 19:19:44,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783e8055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:44, skipping insertion in model container [2019-11-06 19:19:44,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:19:44" (1/1) ... [2019-11-06 19:19:44,716 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:19:44,840 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:19:45,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:19:45,938 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:19:46,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:19:46,364 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:19:46,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46 WrapperNode [2019-11-06 19:19:46,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:19:46,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:19:46,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:19:46,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:19:46,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (1/1) ... [2019-11-06 19:19:46,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (1/1) ... [2019-11-06 19:19:46,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (1/1) ... [2019-11-06 19:19:46,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (1/1) ... [2019-11-06 19:19:46,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (1/1) ... [2019-11-06 19:19:46,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (1/1) ... [2019-11-06 19:19:46,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (1/1) ... [2019-11-06 19:19:46,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:19:46,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:19:46,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:19:46,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:19:46,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:19:46,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:19:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:19:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:19:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:19:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:19:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:19:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:19:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:19:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:19:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:19:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:19:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:19:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:19:50,958 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:19:50,962 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:19:50,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:19:50 BoogieIcfgContainer [2019-11-06 19:19:50,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:19:50,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:19:50,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:19:50,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:19:50,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:19:44" (1/3) ... [2019-11-06 19:19:50,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5156e76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:19:50, skipping insertion in model container [2019-11-06 19:19:50,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:46" (2/3) ... [2019-11-06 19:19:50,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5156e76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:19:50, skipping insertion in model container [2019-11-06 19:19:50,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:19:50" (3/3) ... [2019-11-06 19:19:50,982 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label30.c [2019-11-06 19:19:50,997 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:19:51,007 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:19:51,020 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:19:51,067 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:19:51,067 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:19:51,067 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:19:51,067 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:19:51,068 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:19:51,068 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:19:51,068 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:19:51,068 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:19:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-11-06 19:19:51,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-06 19:19:51,116 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:19:51,117 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:19:51,119 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:19:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:19:51,126 INFO L82 PathProgramCache]: Analyzing trace with hash 993587001, now seen corresponding path program 1 times [2019-11-06 19:19:51,138 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:19:51,138 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608135761] [2019-11-06 19:19:51,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:19:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:19:51,609 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608135761] [2019-11-06 19:19:51,610 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:19:51,610 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:19:51,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705363794] [2019-11-06 19:19:51,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:19:51,618 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:19:51,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:19:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:19:51,636 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2019-11-06 19:20:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:20:00,363 INFO L93 Difference]: Finished difference Result 2181 states and 4039 transitions. [2019-11-06 19:20:00,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:20:00,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-06 19:20:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:20:00,398 INFO L225 Difference]: With dead ends: 2181 [2019-11-06 19:20:00,398 INFO L226 Difference]: Without dead ends: 1495 [2019-11-06 19:20:00,409 INFO L630 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 [2019-11-06 19:20:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2019-11-06 19:20:00,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1458. [2019-11-06 19:20:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2019-11-06 19:20:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 2493 transitions. [2019-11-06 19:20:00,597 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 2493 transitions. Word has length 30 [2019-11-06 19:20:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:20:00,598 INFO L462 AbstractCegarLoop]: Abstraction has 1458 states and 2493 transitions. [2019-11-06 19:20:00,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:20:00,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2493 transitions. [2019-11-06 19:20:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 19:20:00,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:20:00,608 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:20:00,608 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:20:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:20:00,609 INFO L82 PathProgramCache]: Analyzing trace with hash -122191608, now seen corresponding path program 1 times [2019-11-06 19:20:00,609 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:20:00,609 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514625566] [2019-11-06 19:20:00,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:20:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:20:01,073 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514625566] [2019-11-06 19:20:01,074 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:20:01,074 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:20:01,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713556461] [2019-11-06 19:20:01,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:20:01,079 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:20:01,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:20:01,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:20:01,080 INFO L87 Difference]: Start difference. First operand 1458 states and 2493 transitions. Second operand 8 states. [2019-11-06 19:20:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:20:10,846 INFO L93 Difference]: Finished difference Result 5746 states and 10378 transitions. [2019-11-06 19:20:10,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:20:10,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-11-06 19:20:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:20:10,888 INFO L225 Difference]: With dead ends: 5746 [2019-11-06 19:20:10,888 INFO L226 Difference]: Without dead ends: 4294 [2019-11-06 19:20:10,896 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-11-06 19:20:10,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2019-11-06 19:20:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4230. [2019-11-06 19:20:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4230 states. [2019-11-06 19:20:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 6209 transitions. [2019-11-06 19:20:11,076 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 6209 transitions. Word has length 108 [2019-11-06 19:20:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:20:11,077 INFO L462 AbstractCegarLoop]: Abstraction has 4230 states and 6209 transitions. [2019-11-06 19:20:11,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:20:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 6209 transitions. [2019-11-06 19:20:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 19:20:11,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:20:11,087 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:20:11,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:20:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:20:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash -771762316, now seen corresponding path program 1 times [2019-11-06 19:20:11,089 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:20:11,089 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061535230] [2019-11-06 19:20:11,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:20:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:20:11,402 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061535230] [2019-11-06 19:20:11,402 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:20:11,403 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:20:11,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808420372] [2019-11-06 19:20:11,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:20:11,405 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:20:11,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:20:11,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:20:11,405 INFO L87 Difference]: Start difference. First operand 4230 states and 6209 transitions. Second operand 9 states. [2019-11-06 19:20:20,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:20:20,283 INFO L93 Difference]: Finished difference Result 16716 states and 26086 transitions. [2019-11-06 19:20:20,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:20:20,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2019-11-06 19:20:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:20:20,343 INFO L225 Difference]: With dead ends: 16716 [2019-11-06 19:20:20,343 INFO L226 Difference]: Without dead ends: 11193 [2019-11-06 19:20:20,364 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:20:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11193 states. [2019-11-06 19:20:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11193 to 9376. [2019-11-06 19:20:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9376 states. [2019-11-06 19:20:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 13457 transitions. [2019-11-06 19:20:20,644 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 13457 transitions. Word has length 109 [2019-11-06 19:20:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:20:20,645 INFO L462 AbstractCegarLoop]: Abstraction has 9376 states and 13457 transitions. [2019-11-06 19:20:20,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:20:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 13457 transitions. [2019-11-06 19:20:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-06 19:20:20,650 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:20:20,650 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 19:20:20,650 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:20:20,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:20:20,651 INFO L82 PathProgramCache]: Analyzing trace with hash 40731763, now seen corresponding path program 1 times [2019-11-06 19:20:20,651 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:20:20,651 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210851763] [2019-11-06 19:20:20,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:20:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-06 19:20:20,897 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210851763] [2019-11-06 19:20:20,897 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795620043] [2019-11-06 19:20:20,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:20:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:21,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:20:21,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:20:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-06 19:20:21,116 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:20:21,116 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:20:21,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190754072] [2019-11-06 19:20:21,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:20:21,117 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:20:21,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:20:21,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:20:21,118 INFO L87 Difference]: Start difference. First operand 9376 states and 13457 transitions. Second operand 3 states.