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/Problem16_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:06:00,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:06:00,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:06:00,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:06:00,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:06:00,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:06:00,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:06:00,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:06:00,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:06:00,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:06:00,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:06:00,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:06:00,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:06:00,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:06:00,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:06:00,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:06:00,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:06:00,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:06:00,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:06:00,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:06:00,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:06:00,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:06:00,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:06:00,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:06:00,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:06:00,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:06:00,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:06:00,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:06:00,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:06:00,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:06:00,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:06:00,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:06:00,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:06:00,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:06:00,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:06:00,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:06:00,706 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 18:06:00,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:06:00,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:06:00,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:06:00,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:06:00,739 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:06:00,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:06:00,739 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:06:00,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:06:00,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:06:00,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:06:00,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:06:00,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:06:00,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:06:00,742 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:06:00,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:06:00,742 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:06:00,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:06:00,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:06:00,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:06:00,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:06:00,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:06:00,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:06:00,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:06:00,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:06:00,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:06:00,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:06:00,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:06:00,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:06:00,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:06:01,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:06:01,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:06:01,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:06:01,057 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:06:01,057 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:06:01,058 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label49.c [2019-10-13 18:06:01,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a6e6d82/4b9502cdb42b4587b5d29a6df244cf73/FLAG159257616 [2019-10-13 18:06:01,826 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:06:01,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label49.c [2019-10-13 18:06:01,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a6e6d82/4b9502cdb42b4587b5d29a6df244cf73/FLAG159257616 [2019-10-13 18:06:02,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a6e6d82/4b9502cdb42b4587b5d29a6df244cf73 [2019-10-13 18:06:02,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:06:02,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:06:02,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:02,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:06:02,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:06:02,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:02" (1/1) ... [2019-10-13 18:06:02,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0ede89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:02, skipping insertion in model container [2019-10-13 18:06:02,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:02" (1/1) ... [2019-10-13 18:06:02,040 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:06:02,121 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:06:02,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:02,991 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:06:03,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:03,243 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:06:03,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03 WrapperNode [2019-10-13 18:06:03,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:03,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:06:03,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:06:03,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:06:03,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:06:03,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:06:03,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:06:03,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:06:03,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (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 18:06:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:06:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:06:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:06:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:06:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:06:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:06:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:06:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:06:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:06:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:06:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:06:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:06:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:06:05,945 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:06:05,945 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:06:05,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:05 BoogieIcfgContainer [2019-10-13 18:06:05,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:06:05,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:06:05,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:06:05,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:06:05,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:06:02" (1/3) ... [2019-10-13 18:06:05,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf1698d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:05, skipping insertion in model container [2019-10-13 18:06:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (2/3) ... [2019-10-13 18:06:05,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf1698d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:05, skipping insertion in model container [2019-10-13 18:06:05,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:05" (3/3) ... [2019-10-13 18:06:05,955 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label49.c [2019-10-13 18:06:05,965 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:06:05,974 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:06:05,986 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:06:06,017 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:06:06,017 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:06:06,017 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:06:06,017 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:06:06,017 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:06:06,018 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:06:06,018 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:06:06,018 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:06:06,046 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-13 18:06:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 18:06:06,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:06,058 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, 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 18:06:06,060 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:06,066 INFO L82 PathProgramCache]: Analyzing trace with hash -971896627, now seen corresponding path program 1 times [2019-10-13 18:06:06,075 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:06,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992610437] [2019-10-13 18:06:06,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:06,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:06,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:06,568 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 18:06:06,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992610437] [2019-10-13 18:06:06,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:06,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:06:06,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544157942] [2019-10-13 18:06:06,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:06:06,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:06,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:06:06,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:06:06,602 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-13 18:06:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:13,168 INFO L93 Difference]: Finished difference Result 1530 states and 2865 transitions. [2019-10-13 18:06:13,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:06:13,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-10-13 18:06:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:13,198 INFO L225 Difference]: With dead ends: 1530 [2019-10-13 18:06:13,198 INFO L226 Difference]: Without dead ends: 1038 [2019-10-13 18:06:13,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:06:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-13 18:06:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-13 18:06:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-13 18:06:13,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1703 transitions. [2019-10-13 18:06:13,337 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1703 transitions. Word has length 66 [2019-10-13 18:06:13,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:13,338 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1703 transitions. [2019-10-13 18:06:13,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:06:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1703 transitions. [2019-10-13 18:06:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 18:06:13,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:13,345 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, 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] [2019-10-13 18:06:13,345 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:13,346 INFO L82 PathProgramCache]: Analyzing trace with hash -653341620, now seen corresponding path program 1 times [2019-10-13 18:06:13,346 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:13,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854205744] [2019-10-13 18:06:13,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:13,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:13,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:13,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854205744] [2019-10-13 18:06:13,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:13,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:06:13,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544734532] [2019-10-13 18:06:13,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:06:13,598 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:13,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:06:13,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:06:13,601 INFO L87 Difference]: Start difference. First operand 1031 states and 1703 transitions. Second operand 9 states. [2019-10-13 18:06:19,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:19,644 INFO L93 Difference]: Finished difference Result 3128 states and 5278 transitions. [2019-10-13 18:06:19,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:06:19,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 136 [2019-10-13 18:06:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:19,661 INFO L225 Difference]: With dead ends: 3128 [2019-10-13 18:06:19,662 INFO L226 Difference]: Without dead ends: 2103 [2019-10-13 18:06:19,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:06:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2019-10-13 18:06:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2069. [2019-10-13 18:06:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2019-10-13 18:06:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3304 transitions. [2019-10-13 18:06:19,766 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3304 transitions. Word has length 136 [2019-10-13 18:06:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:19,770 INFO L462 AbstractCegarLoop]: Abstraction has 2069 states and 3304 transitions. [2019-10-13 18:06:19,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:06:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3304 transitions. [2019-10-13 18:06:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 18:06:19,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:19,780 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, 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] [2019-10-13 18:06:19,782 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:19,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1932739549, now seen corresponding path program 1 times [2019-10-13 18:06:19,784 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:19,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433834087] [2019-10-13 18:06:19,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:19,785 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:19,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:19,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433834087] [2019-10-13 18:06:19,990 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:19,990 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:06:19,990 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150461554] [2019-10-13 18:06:19,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:06:19,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:19,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:06:19,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:06:19,999 INFO L87 Difference]: Start difference. First operand 2069 states and 3304 transitions. Second operand 8 states. [2019-10-13 18:06:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:25,714 INFO L93 Difference]: Finished difference Result 5216 states and 8406 transitions. [2019-10-13 18:06:25,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:06:25,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2019-10-13 18:06:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:25,734 INFO L225 Difference]: With dead ends: 5216 [2019-10-13 18:06:25,735 INFO L226 Difference]: Without dead ends: 3153 [2019-10-13 18:06:25,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:06:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2019-10-13 18:06:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2096. [2019-10-13 18:06:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2019-10-13 18:06:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2805 transitions. [2019-10-13 18:06:25,831 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2805 transitions. Word has length 137 [2019-10-13 18:06:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:25,833 INFO L462 AbstractCegarLoop]: Abstraction has 2096 states and 2805 transitions. [2019-10-13 18:06:25,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:06:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2805 transitions. [2019-10-13 18:06:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-13 18:06:25,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:25,843 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:25,843 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:25,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1687278437, now seen corresponding path program 1 times [2019-10-13 18:06:25,844 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:25,844 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456235548] [2019-10-13 18:06:25,844 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:25,844 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:25,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:26,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456235548] [2019-10-13 18:06:26,296 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:26,296 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:06:26,296 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720856848] [2019-10-13 18:06:26,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:06:26,297 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:26,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:06:26,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:06:26,298 INFO L87 Difference]: Start difference. First operand 2096 states and 2805 transitions. Second operand 9 states. [2019-10-13 18:06:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:31,731 INFO L93 Difference]: Finished difference Result 8373 states and 11591 transitions. [2019-10-13 18:06:31,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:06:31,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2019-10-13 18:06:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:31,766 INFO L225 Difference]: With dead ends: 8373 [2019-10-13 18:06:31,767 INFO L226 Difference]: Without dead ends: 6283 [2019-10-13 18:06:31,775 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:06:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6283 states. [2019-10-13 18:06:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6283 to 6269. [2019-10-13 18:06:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6269 states. [2019-10-13 18:06:31,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 8083 transitions. [2019-10-13 18:06:31,953 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 8083 transitions. Word has length 229 [2019-10-13 18:06:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:31,955 INFO L462 AbstractCegarLoop]: Abstraction has 6269 states and 8083 transitions. [2019-10-13 18:06:31,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:06:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 8083 transitions. [2019-10-13 18:06:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-10-13 18:06:31,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:31,960 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:31,960 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1656258471, now seen corresponding path program 1 times [2019-10-13 18:06:31,962 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:31,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859626535] [2019-10-13 18:06:31,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:31,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:31,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:32,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859626535] [2019-10-13 18:06:32,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91715738] [2019-10-13 18:06:32,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:06:32,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:06:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:32,771 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:06:32,771 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:06:32,771 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106745977] [2019-10-13 18:06:32,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:06:32,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:32,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:06:32,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:06:32,773 INFO L87 Difference]: Start difference. First operand 6269 states and 8083 transitions. Second operand 3 states. [2019-10-13 18:06:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:34,299 INFO L93 Difference]: Finished difference Result 12532 states and 16169 transitions. [2019-10-13 18:06:34,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:06:34,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2019-10-13 18:06:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:34,326 INFO L225 Difference]: With dead ends: 12532 [2019-10-13 18:06:34,327 INFO L226 Difference]: Without dead ends: 6269 [2019-10-13 18:06:34,341 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:06:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2019-10-13 18:06:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 5932. [2019-10-13 18:06:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5932 states. [2019-10-13 18:06:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 7457 transitions. [2019-10-13 18:06:34,572 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 7457 transitions. Word has length 315 [2019-10-13 18:06:34,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:34,573 INFO L462 AbstractCegarLoop]: Abstraction has 5932 states and 7457 transitions. [2019-10-13 18:06:34,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:06:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 7457 transitions. [2019-10-13 18:06:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2019-10-13 18:06:34,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:34,590 INFO L380 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:34,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:34,797 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:34,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1176610783, now seen corresponding path program 1 times [2019-10-13 18:06:34,798 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:34,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352564691] [2019-10-13 18:06:34,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:34,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:34,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-10-13 18:06:35,452 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352564691] [2019-10-13 18:06:35,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495788184] [2019-10-13 18:06:35,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:35,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:06:35,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:06:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-10-13 18:06:35,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:06:35,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-13 18:06:35,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183971463] [2019-10-13 18:06:35,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:06:35,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:06:35,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 18:06:35,865 INFO L87 Difference]: Start difference. First operand 5932 states and 7457 transitions. Second operand 3 states. [2019-10-13 18:06:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:37,508 INFO L93 Difference]: Finished difference Result 7958 states and 9766 transitions. [2019-10-13 18:06:37,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:06:37,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 470 [2019-10-13 18:06:37,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:37,542 INFO L225 Difference]: With dead ends: 7958 [2019-10-13 18:06:37,542 INFO L226 Difference]: Without dead ends: 7956 [2019-10-13 18:06:37,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 473 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 18:06:37,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7956 states. [2019-10-13 18:06:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7956 to 6608. [2019-10-13 18:06:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6608 states. [2019-10-13 18:06:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6608 states to 6608 states and 8271 transitions. [2019-10-13 18:06:37,691 INFO L78 Accepts]: Start accepts. Automaton has 6608 states and 8271 transitions. Word has length 470 [2019-10-13 18:06:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:37,692 INFO L462 AbstractCegarLoop]: Abstraction has 6608 states and 8271 transitions. [2019-10-13 18:06:37,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:06:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6608 states and 8271 transitions. [2019-10-13 18:06:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2019-10-13 18:06:37,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:37,705 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:37,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:37,909 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:37,911 INFO L82 PathProgramCache]: Analyzing trace with hash 106035057, now seen corresponding path program 1 times [2019-10-13 18:06:37,911 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:37,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411851870] [2019-10-13 18:06:37,912 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:37,912 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:37,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 293 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 18:06:38,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411851870] [2019-10-13 18:06:38,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572633042] [2019-10-13 18:06:38,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:38,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:06:38,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:06:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 18:06:39,106 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:06:39,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:06:39,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367295302] [2019-10-13 18:06:39,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:06:39,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:39,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:06:39,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:06:39,110 INFO L87 Difference]: Start difference. First operand 6608 states and 8271 transitions. Second operand 11 states.