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-f4eb214f-m [2019-10-13 18:07:29,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:07:29,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:07:29,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:07:29,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:07:29,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:07:29,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:07:29,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:07:29,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:07:29,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:07:29,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:07:29,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:07:29,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:07:29,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:07:29,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:07:29,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:07:29,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:07:29,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:07:29,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:07:29,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:07:29,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:07:29,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:07:29,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:07:29,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:07:29,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:07:29,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:07:29,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:07:29,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:07:29,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:07:29,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:07:29,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:07:29,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:07:29,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:07:29,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:07:29,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:07:29,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:07:29,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:07:29,585 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:07:29,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:07:29,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:07:29,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:07:29,589 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:07:29,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:07:29,589 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:07:29,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:07:29,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:07:29,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:07:29,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:07:29,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:07:29,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:07:29,591 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:07:29,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:07:29,592 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:07:29,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:07:29,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:07:29,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:07:29,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:07:29,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:07:29,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:07:29,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:07:29,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:07:29,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:07:29,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:07:29,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:07:29,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:07:29,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:07:29,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:07:29,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:07:29,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:07:29,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:07:29,908 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:07:29,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label59.c [2019-10-13 18:07:29,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30ab5cff/1e675d57d6d74406a09da9718af873d5/FLAGb939467d5 [2019-10-13 18:07:30,735 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:07:30,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label59.c [2019-10-13 18:07:30,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30ab5cff/1e675d57d6d74406a09da9718af873d5/FLAGb939467d5 [2019-10-13 18:07:30,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30ab5cff/1e675d57d6d74406a09da9718af873d5 [2019-10-13 18:07:30,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:07:30,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:07:30,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:30,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:07:30,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:07:30,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:30" (1/1) ... [2019-10-13 18:07:30,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92df964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:30, skipping insertion in model container [2019-10-13 18:07:30,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:30" (1/1) ... [2019-10-13 18:07:30,865 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:07:30,994 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:07:32,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:32,320 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:07:32,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:32,801 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:07:32,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32 WrapperNode [2019-10-13 18:07:32,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:32,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:07:32,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:07:32,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:07:32,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (1/1) ... [2019-10-13 18:07:32,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (1/1) ... [2019-10-13 18:07:32,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (1/1) ... [2019-10-13 18:07:32,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (1/1) ... [2019-10-13 18:07:32,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (1/1) ... [2019-10-13 18:07:33,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (1/1) ... [2019-10-13 18:07:33,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (1/1) ... [2019-10-13 18:07:33,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:07:33,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:07:33,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:07:33,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:07:33,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:07:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:07:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:07:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:07:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:07:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:07:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:07:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:07:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:07:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:07:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:07:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:07:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:07:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:07:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:07:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:07:37,241 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:07:37,242 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:07:37,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:37 BoogieIcfgContainer [2019-10-13 18:07:37,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:07:37,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:07:37,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:07:37,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:07:37,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:07:30" (1/3) ... [2019-10-13 18:07:37,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393220c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:37, skipping insertion in model container [2019-10-13 18:07:37,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:32" (2/3) ... [2019-10-13 18:07:37,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393220c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:37, skipping insertion in model container [2019-10-13 18:07:37,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:37" (3/3) ... [2019-10-13 18:07:37,265 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label59.c [2019-10-13 18:07:37,280 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:07:37,294 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:07:37,306 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:07:37,353 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:07:37,353 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:07:37,353 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:07:37,354 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:07:37,354 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:07:37,354 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:07:37,354 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:07:37,354 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:07:37,399 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 18:07:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 18:07:37,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:37,409 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:37,411 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:37,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1601296886, now seen corresponding path program 1 times [2019-10-13 18:07:37,427 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:37,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599344669] [2019-10-13 18:07:37,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:37,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:37,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:37,841 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599344669] [2019-10-13 18:07:37,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:37,843 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:07:37,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519344577] [2019-10-13 18:07:37,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:37,849 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:37,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:37,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:07:37,866 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-13 18:07:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:45,266 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2019-10-13 18:07:45,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 18:07:45,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-13 18:07:45,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:45,302 INFO L225 Difference]: With dead ends: 2270 [2019-10-13 18:07:45,302 INFO L226 Difference]: Without dead ends: 1432 [2019-10-13 18:07:45,314 INFO L600 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 [2019-10-13 18:07:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-10-13 18:07:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2019-10-13 18:07:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2019-10-13 18:07:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2643 transitions. [2019-10-13 18:07:45,472 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2643 transitions. Word has length 43 [2019-10-13 18:07:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:45,473 INFO L462 AbstractCegarLoop]: Abstraction has 1425 states and 2643 transitions. [2019-10-13 18:07:45,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2643 transitions. [2019-10-13 18:07:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 18:07:45,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:45,479 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:45,479 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:45,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1229064497, now seen corresponding path program 1 times [2019-10-13 18:07:45,480 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:45,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935002538] [2019-10-13 18:07:45,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:45,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:45,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:45,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935002538] [2019-10-13 18:07:45,771 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:45,771 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:07:45,772 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296533240] [2019-10-13 18:07:45,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:07:45,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:45,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:07:45,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:07:45,778 INFO L87 Difference]: Start difference. First operand 1425 states and 2643 transitions. Second operand 8 states. [2019-10-13 18:07:57,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:57,384 INFO L93 Difference]: Finished difference Result 5772 states and 10805 transitions. [2019-10-13 18:07:57,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:07:57,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2019-10-13 18:07:57,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:57,413 INFO L225 Difference]: With dead ends: 5772 [2019-10-13 18:07:57,413 INFO L226 Difference]: Without dead ends: 4353 [2019-10-13 18:07:57,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:07:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2019-10-13 18:07:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 4331. [2019-10-13 18:07:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4331 states. [2019-10-13 18:07:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6682 transitions. [2019-10-13 18:07:57,588 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6682 transitions. Word has length 112 [2019-10-13 18:07:57,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:57,590 INFO L462 AbstractCegarLoop]: Abstraction has 4331 states and 6682 transitions. [2019-10-13 18:07:57,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:07:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6682 transitions. [2019-10-13 18:07:57,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 18:07:57,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:57,601 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:57,602 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:57,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:57,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1998315758, now seen corresponding path program 1 times [2019-10-13 18:07:57,603 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:57,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419625560] [2019-10-13 18:07:57,604 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:57,604 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:57,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:57,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419625560] [2019-10-13 18:07:57,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:57,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:07:57,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871289524] [2019-10-13 18:07:57,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:07:57,856 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:57,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:07:57,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:07:57,857 INFO L87 Difference]: Start difference. First operand 4331 states and 6682 transitions. Second operand 8 states.