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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:04:51,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:04:51,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:04:51,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:04:51,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:04:51,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:04:51,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:04:51,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:04:51,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:04:51,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:04:51,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:04:51,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:04:51,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:04:51,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:04:51,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:04:51,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:04:51,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:04:51,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:04:51,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:04:51,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:04:51,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:04:51,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:04:51,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:04:51,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:04:51,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:04:51,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:04:51,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:04:51,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:04:51,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:04:51,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:04:51,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:04:51,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:04:51,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:04:51,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:04:51,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:04:51,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:04:51,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:04:51,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:04:51,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:04:51,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:04:51,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:04:51,112 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 18:04:51,147 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:04:51,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:04:51,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:04:51,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:04:51,150 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:04:51,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:04:51,152 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:04:51,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:04:51,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:04:51,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:04:51,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:04:51,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:04:51,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:04:51,153 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:04:51,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:04:51,154 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:04:51,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:04:51,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:04:51,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:04:51,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:04:51,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:04:51,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:04:51,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:04:51,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:04:51,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:04:51,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:04:51,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:04:51,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:04:51,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:04:51,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:04:51,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:04:51,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:04:51,463 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:04:51,464 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:04:51,464 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label10.c [2019-10-13 18:04:51,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d867b962/401b8a8a611e4ca8b90d56e2fa665e3c/FLAGcac6ce81e [2019-10-13 18:04:52,238 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:04:52,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label10.c [2019-10-13 18:04:52,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d867b962/401b8a8a611e4ca8b90d56e2fa665e3c/FLAGcac6ce81e [2019-10-13 18:04:52,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d867b962/401b8a8a611e4ca8b90d56e2fa665e3c [2019-10-13 18:04:52,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:04:52,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:04:52,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:52,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:04:52,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:04:52,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:52" (1/1) ... [2019-10-13 18:04:52,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404140b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:52, skipping insertion in model container [2019-10-13 18:04:52,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:52" (1/1) ... [2019-10-13 18:04:52,388 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:04:52,475 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:04:53,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:53,460 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:04:53,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:53,715 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:04:53,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53 WrapperNode [2019-10-13 18:04:53,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:53,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:04:53,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:04:53,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:04:53,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (1/1) ... [2019-10-13 18:04:53,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:04:53,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:04:53,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:04:53,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:04:53,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (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 18:04:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:04:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:04:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:04:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:04:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:04:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:04:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:04:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:04:53,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:04:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:04:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:04:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:04:53,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:04:56,593 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:04:56,593 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:04:56,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:56 BoogieIcfgContainer [2019-10-13 18:04:56,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:04:56,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:04:56,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:04:56,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:04:56,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:04:52" (1/3) ... [2019-10-13 18:04:56,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1398a45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:56, skipping insertion in model container [2019-10-13 18:04:56,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:53" (2/3) ... [2019-10-13 18:04:56,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1398a45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:56, skipping insertion in model container [2019-10-13 18:04:56,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:56" (3/3) ... [2019-10-13 18:04:56,611 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label10.c [2019-10-13 18:04:56,624 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:04:56,635 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:04:56,647 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:04:56,690 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:04:56,691 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:04:56,691 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:04:56,692 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:04:56,692 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:04:56,692 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:04:56,693 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:04:56,693 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:04:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-13 18:04:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 18:04:56,730 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:56,733 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] [2019-10-13 18:04:56,735 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:56,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1129192547, now seen corresponding path program 1 times [2019-10-13 18:04:56,752 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:56,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481780976] [2019-10-13 18:04:56,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:56,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:56,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:57,171 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 18:04:57,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481780976] [2019-10-13 18:04:57,173 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:57,173 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:04:57,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407015336] [2019-10-13 18:04:57,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:04:57,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:57,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:04:57,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:04:57,197 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-13 18:05:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:04,696 INFO L93 Difference]: Finished difference Result 1530 states and 2865 transitions. [2019-10-13 18:05:04,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:05:04,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-13 18:05:04,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:04,727 INFO L225 Difference]: With dead ends: 1530 [2019-10-13 18:05:04,727 INFO L226 Difference]: Without dead ends: 1038 [2019-10-13 18:05:04,737 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 18:05:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-13 18:05:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-13 18:05:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-13 18:05:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1751 transitions. [2019-10-13 18:05:04,870 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1751 transitions. Word has length 38 [2019-10-13 18:05:04,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:04,873 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1751 transitions. [2019-10-13 18:05:04,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:05:04,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1751 transitions. [2019-10-13 18:05:04,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 18:05:04,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:04,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:04,884 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:04,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2138729124, now seen corresponding path program 1 times [2019-10-13 18:05:04,886 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:04,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612014246] [2019-10-13 18:05:04,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:04,888 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:04,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:05:05,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612014246] [2019-10-13 18:05:05,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:05:05,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:05:05,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080258142] [2019-10-13 18:05:05,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:05:05,236 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:05,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:05:05,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:05:05,237 INFO L87 Difference]: Start difference. First operand 1031 states and 1751 transitions. Second operand 9 states. [2019-10-13 18:05:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:09,275 INFO L93 Difference]: Finished difference Result 3130 states and 5428 transitions. [2019-10-13 18:05:09,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:05:09,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2019-10-13 18:05:09,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:09,307 INFO L225 Difference]: With dead ends: 3130 [2019-10-13 18:05:09,307 INFO L226 Difference]: Without dead ends: 2105 [2019-10-13 18:05:09,313 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 18:05:09,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2019-10-13 18:05:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2073. [2019-10-13 18:05:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2019-10-13 18:05:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3396 transitions. [2019-10-13 18:05:09,466 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3396 transitions. Word has length 108 [2019-10-13 18:05:09,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:09,469 INFO L462 AbstractCegarLoop]: Abstraction has 2073 states and 3396 transitions. [2019-10-13 18:05:09,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:05:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3396 transitions. [2019-10-13 18:05:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 18:05:09,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:09,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:09,481 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:09,484 INFO L82 PathProgramCache]: Analyzing trace with hash -899506204, now seen corresponding path program 1 times [2019-10-13 18:05:09,484 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:09,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247555920] [2019-10-13 18:05:09,485 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:09,486 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:09,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:05:09,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247555920] [2019-10-13 18:05:09,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:05:09,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:05:09,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627678493] [2019-10-13 18:05:09,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:05:09,906 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:05:09,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:05:09,907 INFO L87 Difference]: Start difference. First operand 2073 states and 3396 transitions. Second operand 9 states. [2019-10-13 18:05:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:15,516 INFO L93 Difference]: Finished difference Result 7992 states and 13707 transitions. [2019-10-13 18:05:15,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:05:15,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 136 [2019-10-13 18:05:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:15,559 INFO L225 Difference]: With dead ends: 7992 [2019-10-13 18:05:15,560 INFO L226 Difference]: Without dead ends: 5925 [2019-10-13 18:05:15,567 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:05:15,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2019-10-13 18:05:15,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5898. [2019-10-13 18:05:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5898 states. [2019-10-13 18:05:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8923 transitions. [2019-10-13 18:05:15,745 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8923 transitions. Word has length 136 [2019-10-13 18:05:15,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:15,746 INFO L462 AbstractCegarLoop]: Abstraction has 5898 states and 8923 transitions. [2019-10-13 18:05:15,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:05:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8923 transitions. [2019-10-13 18:05:15,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 18:05:15,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:15,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:15,750 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:15,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:15,750 INFO L82 PathProgramCache]: Analyzing trace with hash 689117204, now seen corresponding path program 1 times [2019-10-13 18:05:15,750 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:15,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408685781] [2019-10-13 18:05:15,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:15,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:15,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:05:16,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408685781] [2019-10-13 18:05:16,061 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:05:16,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:05:16,062 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695280311] [2019-10-13 18:05:16,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:05:16,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:16,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:05:16,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:05:16,064 INFO L87 Difference]: Start difference. First operand 5898 states and 8923 transitions. Second operand 9 states. [2019-10-13 18:05:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:19,755 INFO L93 Difference]: Finished difference Result 14973 states and 23283 transitions. [2019-10-13 18:05:19,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:05:19,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2019-10-13 18:05:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:19,805 INFO L225 Difference]: With dead ends: 14973 [2019-10-13 18:05:19,806 INFO L226 Difference]: Without dead ends: 9081 [2019-10-13 18:05:19,822 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 18:05:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2019-10-13 18:05:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 9011. [2019-10-13 18:05:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9011 states. [2019-10-13 18:05:20,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9011 states to 9011 states and 11768 transitions. [2019-10-13 18:05:20,089 INFO L78 Accepts]: Start accepts. Automaton has 9011 states and 11768 transitions. Word has length 176 [2019-10-13 18:05:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:20,091 INFO L462 AbstractCegarLoop]: Abstraction has 9011 states and 11768 transitions. [2019-10-13 18:05:20,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:05:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9011 states and 11768 transitions. [2019-10-13 18:05:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2019-10-13 18:05:20,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:20,101 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:05:20,101 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1385122856, now seen corresponding path program 1 times [2019-10-13 18:05:20,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:20,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883991933] [2019-10-13 18:05:20,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:20,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:20,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 18:05:20,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883991933] [2019-10-13 18:05:20,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309881836] [2019-10-13 18:05:20,523 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 18:05:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:20,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:05:20,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 18:05:20,990 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:05:20,990 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:05:20,990 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415150465] [2019-10-13 18:05:20,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:05:20,991 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:20,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:05:20,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:05:20,992 INFO L87 Difference]: Start difference. First operand 9011 states and 11768 transitions. Second operand 3 states. [2019-10-13 18:05:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:05:22,949 INFO L93 Difference]: Finished difference Result 21065 states and 27822 transitions. [2019-10-13 18:05:22,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:05:22,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 357 [2019-10-13 18:05:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:05:23,016 INFO L225 Difference]: With dead ends: 21065 [2019-10-13 18:05:23,019 INFO L226 Difference]: Without dead ends: 12060 [2019-10-13 18:05:23,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 362 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 18:05:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12060 states. [2019-10-13 18:05:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12060 to 11382. [2019-10-13 18:05:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11382 states. [2019-10-13 18:05:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11382 states to 11382 states and 14471 transitions. [2019-10-13 18:05:23,390 INFO L78 Accepts]: Start accepts. Automaton has 11382 states and 14471 transitions. Word has length 357 [2019-10-13 18:05:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:05:23,391 INFO L462 AbstractCegarLoop]: Abstraction has 11382 states and 14471 transitions. [2019-10-13 18:05:23,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:05:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 11382 states and 14471 transitions. [2019-10-13 18:05:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2019-10-13 18:05:23,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:05:23,404 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:05:23,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:05:23,715 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:05:23,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:05:23,716 INFO L82 PathProgramCache]: Analyzing trace with hash 793181941, now seen corresponding path program 1 times [2019-10-13 18:05:23,716 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:05:23,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653773185] [2019-10-13 18:05:23,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:23,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:05:23,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:05:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:05:24,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653773185] [2019-10-13 18:05:24,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347263115] [2019-10-13 18:05:24,455 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 18:05:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:05:24,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:05:24,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:05:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:05:24,931 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:05:24,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:05:24,932 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160362978] [2019-10-13 18:05:24,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:05:24,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:05:24,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:05:24,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:05:24,936 INFO L87 Difference]: Start difference. First operand 11382 states and 14471 transitions. Second operand 11 states.