/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/Problem11_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:08:09,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:08:09,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:08:09,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:08:09,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:08:09,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:08:09,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:08:09,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:08:09,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:08:09,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:08:09,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:08:09,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:08:09,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:08:09,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:08:09,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:08:09,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:08:09,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:08:09,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:08:09,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:08:09,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:08:09,272 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 19:08:09,286 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:08:09,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:08:09,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:08:09,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:08:09,288 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:08:09,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:08:09,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:08:09,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:08:09,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:08:09,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:08:09,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:08:09,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:08:09,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:08:09,290 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:08:09,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:08:09,290 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:08:09,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:08:09,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:08:09,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:08:09,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:08:09,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:08:09,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:08:09,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:08:09,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:08:09,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:08:09,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:08:09,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:08:09,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:08:09,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:08:09,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:08:09,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:08:09,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:08:09,570 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:08:09,570 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:08:09,571 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label13.c [2019-11-06 19:08:09,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593af68fd/179d3f17937e45b3a2225d220bb5c6bd/FLAGfc4aa6efb [2019-11-06 19:08:10,271 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:08:10,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label13.c [2019-11-06 19:08:10,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593af68fd/179d3f17937e45b3a2225d220bb5c6bd/FLAGfc4aa6efb [2019-11-06 19:08:10,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593af68fd/179d3f17937e45b3a2225d220bb5c6bd [2019-11-06 19:08:10,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:08:10,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:08:10,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:08:10,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:08:10,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:08:10,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:08:10" (1/1) ... [2019-11-06 19:08:10,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409e6b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:10, skipping insertion in model container [2019-11-06 19:08:10,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:08:10" (1/1) ... [2019-11-06 19:08:10,523 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:08:10,582 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:08:11,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:08:11,305 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:08:11,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:08:11,518 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:08:11,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11 WrapperNode [2019-11-06 19:08:11,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:08:11,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:08:11,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:08:11,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:08:11,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (1/1) ... [2019-11-06 19:08:11,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (1/1) ... [2019-11-06 19:08:11,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (1/1) ... [2019-11-06 19:08:11,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (1/1) ... [2019-11-06 19:08:11,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (1/1) ... [2019-11-06 19:08:11,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (1/1) ... [2019-11-06 19:08:11,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (1/1) ... [2019-11-06 19:08:11,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:08:11,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:08:11,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:08:11,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:08:11,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (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 [2019-11-06 19:08:11,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:08:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:08:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:08:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:08:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:08:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:08:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:08:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:08:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:08:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:08:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:08:13,790 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:08:13,790 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:08:13,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:08:13 BoogieIcfgContainer [2019-11-06 19:08:13,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:08:13,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:08:13,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:08:13,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:08:13,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:08:10" (1/3) ... [2019-11-06 19:08:13,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474de7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:08:13, skipping insertion in model container [2019-11-06 19:08:13,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:11" (2/3) ... [2019-11-06 19:08:13,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474de7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:08:13, skipping insertion in model container [2019-11-06 19:08:13,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:08:13" (3/3) ... [2019-11-06 19:08:13,803 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label13.c [2019-11-06 19:08:13,815 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:08:13,829 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:08:13,849 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:08:13,896 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:08:13,896 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:08:13,896 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:08:13,897 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:08:13,897 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:08:13,897 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:08:13,897 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:08:13,897 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:08:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-11-06 19:08:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-06 19:08:13,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:08:13,948 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:08:13,950 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:08:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:08:13,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1992146438, now seen corresponding path program 1 times [2019-11-06 19:08:13,967 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:08:13,967 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640740232] [2019-11-06 19:08:13,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:08:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:14,442 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 19:08:14,443 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640740232] [2019-11-06 19:08:14,444 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:08:14,444 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:08:14,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807497957] [2019-11-06 19:08:14,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:08:14,451 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:08:14,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:08:14,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:08:14,469 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-11-06 19:08:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:08:17,879 INFO L93 Difference]: Finished difference Result 1009 states and 1797 transitions. [2019-11-06 19:08:17,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:08:17,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-11-06 19:08:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:08:17,906 INFO L225 Difference]: With dead ends: 1009 [2019-11-06 19:08:17,907 INFO L226 Difference]: Without dead ends: 633 [2019-11-06 19:08:17,918 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 19:08:17,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-11-06 19:08:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 626. [2019-11-06 19:08:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-06 19:08:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 903 transitions. [2019-11-06 19:08:18,041 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 903 transitions. Word has length 39 [2019-11-06 19:08:18,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:08:18,042 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 903 transitions. [2019-11-06 19:08:18,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:08:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 903 transitions. [2019-11-06 19:08:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-06 19:08:18,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:08:18,053 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:18,054 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:08:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:08:18,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1526241146, now seen corresponding path program 1 times [2019-11-06 19:08:18,054 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:08:18,055 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737127206] [2019-11-06 19:08:18,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:08:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:08:18,394 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737127206] [2019-11-06 19:08:18,394 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:08:18,394 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:08:18,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289096784] [2019-11-06 19:08:18,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:08:18,400 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:08:18,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:08:18,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:08:18,401 INFO L87 Difference]: Start difference. First operand 626 states and 903 transitions. Second operand 9 states. [2019-11-06 19:08:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:08:21,388 INFO L93 Difference]: Finished difference Result 2436 states and 3670 transitions. [2019-11-06 19:08:21,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 19:08:21,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-11-06 19:08:21,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:08:21,409 INFO L225 Difference]: With dead ends: 2436 [2019-11-06 19:08:21,410 INFO L226 Difference]: Without dead ends: 1816 [2019-11-06 19:08:21,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:08:21,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2019-11-06 19:08:21,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1777. [2019-11-06 19:08:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1777 states. [2019-11-06 19:08:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2525 transitions. [2019-11-06 19:08:21,511 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2525 transitions. Word has length 111 [2019-11-06 19:08:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:08:21,513 INFO L462 AbstractCegarLoop]: Abstraction has 1777 states and 2525 transitions. [2019-11-06 19:08:21,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:08:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2525 transitions. [2019-11-06 19:08:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-06 19:08:21,529 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:08:21,529 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 19:08:21,529 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:08:21,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:08:21,530 INFO L82 PathProgramCache]: Analyzing trace with hash 993014813, now seen corresponding path program 1 times [2019-11-06 19:08:21,530 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:08:21,531 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720012736] [2019-11-06 19:08:21,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:08:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 101 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:08:22,189 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720012736] [2019-11-06 19:08:22,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558204707] [2019-11-06 19:08:22,190 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 19:08:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:22,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 19:08:22,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:08:22,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:08:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 19:08:22,535 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:08:22,535 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2019-11-06 19:08:22,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907266857] [2019-11-06 19:08:22,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:08:22,541 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:08:22,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:08:22,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-11-06 19:08:22,543 INFO L87 Difference]: Start difference. First operand 1777 states and 2525 transitions. Second operand 5 states. [2019-11-06 19:08:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:08:24,574 INFO L93 Difference]: Finished difference Result 4179 states and 5943 transitions. [2019-11-06 19:08:24,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 19:08:24,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2019-11-06 19:08:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:08:24,596 INFO L225 Difference]: With dead ends: 4179 [2019-11-06 19:08:24,597 INFO L226 Difference]: Without dead ends: 2408 [2019-11-06 19:08:24,602 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:08:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2019-11-06 19:08:24,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2200. [2019-11-06 19:08:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2019-11-06 19:08:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3047 transitions. [2019-11-06 19:08:24,698 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3047 transitions. Word has length 214 [2019-11-06 19:08:24,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:08:24,700 INFO L462 AbstractCegarLoop]: Abstraction has 2200 states and 3047 transitions. [2019-11-06 19:08:24,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:08:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3047 transitions. [2019-11-06 19:08:24,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-11-06 19:08:24,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:08:24,710 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 19:08:24,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:08:24,916 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:08:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:08:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash -957711129, now seen corresponding path program 1 times [2019-11-06 19:08:24,917 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:08:24,917 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908943334] [2019-11-06 19:08:24,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:08:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-11-06 19:08:25,362 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908943334] [2019-11-06 19:08:25,362 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613464358] [2019-11-06 19:08:25,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:08:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:08:25,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-06 19:08:25,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:08:25,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:08:25,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:08:25,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:08:25,570 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:08:25,571 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:08:25,573 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:08:25,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:08:25,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:08:27,742 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 59 DAG size of output: 21 [2019-11-06 19:08:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-11-06 19:08:29,987 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:08:29,987 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-11-06 19:08:29,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575812631] [2019-11-06 19:08:29,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 19:08:29,989 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:08:29,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 19:08:29,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2019-11-06 19:08:29,990 INFO L87 Difference]: Start difference. First operand 2200 states and 3047 transitions. Second operand 11 states.