/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/Problem18_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:21:45,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:21:45,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:21:45,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:21:45,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:21:45,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:21:45,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:21:45,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:21:45,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:21:45,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:21:45,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:21:45,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:21:45,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:21:45,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:21:45,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:21:45,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:21:45,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:21:45,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:21:45,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:21:45,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:21:46,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:21:46,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:21:46,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:21:46,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:21:46,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:21:46,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:21:46,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:21:46,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:21:46,022 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 19:21:46,056 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:21:46,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:21:46,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:21:46,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:21:46,061 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:21:46,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:21:46,062 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:21:46,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:21:46,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:21:46,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:21:46,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:21:46,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:21:46,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:21:46,065 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:21:46,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:21:46,065 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:21:46,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:21:46,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:21:46,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:21:46,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:21:46,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:21:46,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:21:46,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:21:46,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:21:46,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:21:46,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:21:46,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:21:46,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:21:46,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:21:46,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:21:46,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:21:46,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:21:46,409 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:21:46,410 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:21:46,410 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label59.c [2019-11-06 19:21:46,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eff220a61/e9a6442c43e5490b895a2f35b5b2d951/FLAG81cf19f86 [2019-11-06 19:21:47,193 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:21:47,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label59.c [2019-11-06 19:21:47,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eff220a61/e9a6442c43e5490b895a2f35b5b2d951/FLAG81cf19f86 [2019-11-06 19:21:47,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eff220a61/e9a6442c43e5490b895a2f35b5b2d951 [2019-11-06 19:21:47,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:21:47,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:21:47,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:21:47,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:21:47,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:21:47,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:21:47" (1/1) ... [2019-11-06 19:21:47,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d80ea1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:47, skipping insertion in model container [2019-11-06 19:21:47,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:21:47" (1/1) ... [2019-11-06 19:21:47,317 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:21:47,440 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:21:48,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:21:48,898 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:21:49,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:21:49,507 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:21:49,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49 WrapperNode [2019-11-06 19:21:49,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:21:49,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:21:49,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:21:49,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:21:49,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (1/1) ... [2019-11-06 19:21:49,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (1/1) ... [2019-11-06 19:21:49,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (1/1) ... [2019-11-06 19:21:49,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (1/1) ... [2019-11-06 19:21:49,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (1/1) ... [2019-11-06 19:21:49,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (1/1) ... [2019-11-06 19:21:49,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (1/1) ... [2019-11-06 19:21:49,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:21:49,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:21:49,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:21:49,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:21:49,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (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 19:21:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:21:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:21:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:21:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:21:49,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:21:49,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:21:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:21:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:21:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:21:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:21:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:21:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:21:49,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:21:49,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:21:49,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:21:53,744 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:21:53,745 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:21:53,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:21:53 BoogieIcfgContainer [2019-11-06 19:21:53,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:21:53,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:21:53,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:21:53,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:21:53,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:21:47" (1/3) ... [2019-11-06 19:21:53,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec3dd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:21:53, skipping insertion in model container [2019-11-06 19:21:53,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:49" (2/3) ... [2019-11-06 19:21:53,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec3dd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:21:53, skipping insertion in model container [2019-11-06 19:21:53,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:21:53" (3/3) ... [2019-11-06 19:21:53,767 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label59.c [2019-11-06 19:21:53,784 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:21:53,795 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:21:53,806 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:21:53,852 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:21:53,852 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:21:53,853 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:21:53,853 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:21:53,853 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:21:53,853 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:21:53,853 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:21:53,853 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:21:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 19:21:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-06 19:21:53,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:53,906 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:21:53,908 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:53,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1601296886, now seen corresponding path program 1 times [2019-11-06 19:21:53,923 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:53,923 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599195143] [2019-11-06 19:21:53,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:54,331 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 19:21:54,332 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599195143] [2019-11-06 19:21:54,333 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:54,333 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:21:54,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258176164] [2019-11-06 19:21:54,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:21:54,341 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:54,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:21:54,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:21:54,359 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-11-06 19:22:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:22:01,417 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2019-11-06 19:22:01,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 19:22:01,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-11-06 19:22:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:22:01,447 INFO L225 Difference]: With dead ends: 2270 [2019-11-06 19:22:01,447 INFO L226 Difference]: Without dead ends: 1432 [2019-11-06 19:22:01,459 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:22:01,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-11-06 19:22:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2019-11-06 19:22:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2019-11-06 19:22:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2643 transitions. [2019-11-06 19:22:01,609 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2643 transitions. Word has length 43 [2019-11-06 19:22:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:22:01,610 INFO L462 AbstractCegarLoop]: Abstraction has 1425 states and 2643 transitions. [2019-11-06 19:22:01,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:22:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2643 transitions. [2019-11-06 19:22:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 19:22:01,620 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:22:01,621 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:01,622 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:22:01,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:22:01,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1229064497, now seen corresponding path program 1 times [2019-11-06 19:22:01,622 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:22:01,623 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103644198] [2019-11-06 19:22:01,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:22:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:22:01,998 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103644198] [2019-11-06 19:22:01,998 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:22:01,998 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:22:01,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815436507] [2019-11-06 19:22:02,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:22:02,004 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:22:02,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:22:02,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:22:02,005 INFO L87 Difference]: Start difference. First operand 1425 states and 2643 transitions. Second operand 8 states. [2019-11-06 19:22:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:22:12,580 INFO L93 Difference]: Finished difference Result 5772 states and 10805 transitions. [2019-11-06 19:22:12,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:22:12,581 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2019-11-06 19:22:12,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:22:12,608 INFO L225 Difference]: With dead ends: 5772 [2019-11-06 19:22:12,609 INFO L226 Difference]: Without dead ends: 4353 [2019-11-06 19:22:12,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:22:12,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2019-11-06 19:22:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 4331. [2019-11-06 19:22:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4331 states. [2019-11-06 19:22:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6682 transitions. [2019-11-06 19:22:12,761 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6682 transitions. Word has length 112 [2019-11-06 19:22:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:22:12,763 INFO L462 AbstractCegarLoop]: Abstraction has 4331 states and 6682 transitions. [2019-11-06 19:22:12,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:22:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6682 transitions. [2019-11-06 19:22:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-06 19:22:12,774 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:22:12,775 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:12,776 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:22:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:22:12,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1998315758, now seen corresponding path program 1 times [2019-11-06 19:22:12,777 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:22:12,778 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715870505] [2019-11-06 19:22:12,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:22:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:22:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:22:13,078 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715870505] [2019-11-06 19:22:13,078 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:22:13,078 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:22:13,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879728955] [2019-11-06 19:22:13,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:22:13,079 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:22:13,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:22:13,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:22:13,080 INFO L87 Difference]: Start difference. First operand 4331 states and 6682 transitions. Second operand 8 states.