java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:05:52,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:05:52,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:05:52,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:05:52,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:05:52,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:05:52,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:05:52,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:05:52,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:05:52,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:05:52,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:05:52,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:05:52,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:05:52,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:05:52,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:05:52,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:05:52,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:05:52,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:05:52,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:05:52,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:05:52,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:05:52,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:05:52,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:05:52,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:05:52,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:05:52,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:05:52,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:05:52,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:05:52,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:05:52,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:05:52,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:05:52,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:05:52,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:05:52,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:05:52,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:05:52,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:05:52,187 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 [2019-10-14 22:05:52,206 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:05:52,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:05:52,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:05:52,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:05:52,208 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:05:52,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:05:52,209 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:05:52,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:05:52,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:05:52,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:05:52,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:05:52,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:05:52,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:05:52,210 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:05:52,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:05:52,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:05:52,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:05:52,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:05:52,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:05:52,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:05:52,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:05:52,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:05:52,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:05:52,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:05:52,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:05:52,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:05:52,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:05:52,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:05:52,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:05:52,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:05:52,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:05:52,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:05:52,508 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:05:52,508 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:05:52,509 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27.c [2019-10-14 22:05:52,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f607b273/d7cf6289dbad462893ff619eaba7c058/FLAG6fb9fc539 [2019-10-14 22:05:53,278 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:05:53,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label27.c [2019-10-14 22:05:53,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f607b273/d7cf6289dbad462893ff619eaba7c058/FLAG6fb9fc539 [2019-10-14 22:05:53,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f607b273/d7cf6289dbad462893ff619eaba7c058 [2019-10-14 22:05:53,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:05:53,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:05:53,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:05:53,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:05:53,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:05:53,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:53" (1/1) ... [2019-10-14 22:05:53,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7c29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:53, skipping insertion in model container [2019-10-14 22:05:53,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:53" (1/1) ... [2019-10-14 22:05:53,440 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:05:53,562 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:05:54,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:05:54,812 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:05:55,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:05:55,288 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:05:55,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55 WrapperNode [2019-10-14 22:05:55,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:05:55,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:05:55,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:05:55,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:05:55,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (1/1) ... [2019-10-14 22:05:55,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (1/1) ... [2019-10-14 22:05:55,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (1/1) ... [2019-10-14 22:05:55,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (1/1) ... [2019-10-14 22:05:55,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (1/1) ... [2019-10-14 22:05:55,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (1/1) ... [2019-10-14 22:05:55,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (1/1) ... [2019-10-14 22:05:55,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:05:55,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:05:55,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:05:55,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:05:55,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (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 [2019-10-14 22:05:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:05:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:05:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:05:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:05:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:05:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:05:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:05:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:05:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:05:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:05:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:05:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:05:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:05:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:05:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:05:59,679 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:05:59,679 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:05:59,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:59 BoogieIcfgContainer [2019-10-14 22:05:59,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:05:59,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:05:59,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:05:59,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:05:59,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:05:53" (1/3) ... [2019-10-14 22:05:59,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e60138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:59, skipping insertion in model container [2019-10-14 22:05:59,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:55" (2/3) ... [2019-10-14 22:05:59,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e60138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:59, skipping insertion in model container [2019-10-14 22:05:59,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:59" (3/3) ... [2019-10-14 22:05:59,695 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label27.c [2019-10-14 22:05:59,709 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:05:59,720 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:05:59,731 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:05:59,775 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:05:59,775 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:05:59,776 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:05:59,776 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:05:59,776 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:05:59,776 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:05:59,776 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:05:59,776 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:05:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-14 22:05:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-14 22:05:59,821 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:59,822 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] [2019-10-14 22:05:59,824 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:59,829 INFO L82 PathProgramCache]: Analyzing trace with hash 602165681, now seen corresponding path program 1 times [2019-10-14 22:05:59,837 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:59,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819949375] [2019-10-14 22:05:59,838 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:59,838 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:59,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:00,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819949375] [2019-10-14 22:06:00,161 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:00,161 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:06:00,162 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280067630] [2019-10-14 22:06:00,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:06:00,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:00,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:06:00,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:06:00,183 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-14 22:06:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:08,914 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-10-14 22:06:08,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:06:08,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-10-14 22:06:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:08,956 INFO L225 Difference]: With dead ends: 2984 [2019-10-14 22:06:08,956 INFO L226 Difference]: Without dead ends: 2142 [2019-10-14 22:06:08,965 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:06:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-14 22:06:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-10-14 22:06:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-10-14 22:06:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-10-14 22:06:09,119 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 36 [2019-10-14 22:06:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:09,120 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-10-14 22:06:09,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:06:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-10-14 22:06:09,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-14 22:06:09,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:09,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:06:09,127 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:09,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:09,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1312422072, now seen corresponding path program 1 times [2019-10-14 22:06:09,128 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:09,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895594955] [2019-10-14 22:06:09,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:09,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:09,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:09,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895594955] [2019-10-14 22:06:09,523 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:09,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:06:09,523 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915962881] [2019-10-14 22:06:09,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:06:09,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:09,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:06:09,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:06:09,527 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-10-14 22:06:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:19,588 INFO L93 Difference]: Finished difference Result 8649 states and 15485 transitions. [2019-10-14 22:06:19,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:06:19,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2019-10-14 22:06:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:19,627 INFO L225 Difference]: With dead ends: 8649 [2019-10-14 22:06:19,627 INFO L226 Difference]: Without dead ends: 6523 [2019-10-14 22:06:19,634 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:06:19,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2019-10-14 22:06:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6502. [2019-10-14 22:06:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2019-10-14 22:06:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 9753 transitions. [2019-10-14 22:06:19,870 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 9753 transitions. Word has length 124 [2019-10-14 22:06:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:19,873 INFO L462 AbstractCegarLoop]: Abstraction has 6502 states and 9753 transitions. [2019-10-14 22:06:19,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:06:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 9753 transitions. [2019-10-14 22:06:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 22:06:19,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:19,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:06:19,887 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1874435001, now seen corresponding path program 1 times [2019-10-14 22:06:19,888 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:19,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583193412] [2019-10-14 22:06:19,888 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:19,888 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:19,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:20,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583193412] [2019-10-14 22:06:20,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741474869] [2019-10-14 22:06:20,140 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 [2019-10-14 22:06:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:20,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:06:20,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:06:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:20,291 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:06:20,291 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-10-14 22:06:20,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64166915] [2019-10-14 22:06:20,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:06:20,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:20,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:06:20,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:06:20,294 INFO L87 Difference]: Start difference. First operand 6502 states and 9753 transitions. Second operand 3 states. [2019-10-14 22:06:23,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:23,884 INFO L93 Difference]: Finished difference Result 17267 states and 25492 transitions. [2019-10-14 22:06:23,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:06:23,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2019-10-14 22:06:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:23,942 INFO L225 Difference]: With dead ends: 17267 [2019-10-14 22:06:23,943 INFO L226 Difference]: Without dead ends: 10771 [2019-10-14 22:06:23,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:06:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2019-10-14 22:06:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9360. [2019-10-14 22:06:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9360 states. [2019-10-14 22:06:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9360 states to 9360 states and 13070 transitions. [2019-10-14 22:06:24,196 INFO L78 Accepts]: Start accepts. Automaton has 9360 states and 13070 transitions. Word has length 147 [2019-10-14 22:06:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:24,198 INFO L462 AbstractCegarLoop]: Abstraction has 9360 states and 13070 transitions. [2019-10-14 22:06:24,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:06:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 9360 states and 13070 transitions. [2019-10-14 22:06:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-14 22:06:24,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:24,202 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 22:06:24,407 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:06:24,407 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:24,408 INFO L82 PathProgramCache]: Analyzing trace with hash -184406120, now seen corresponding path program 1 times [2019-10-14 22:06:24,408 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:24,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847127210] [2019-10-14 22:06:24,409 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:24,409 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:24,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 58 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 22:06:24,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847127210] [2019-10-14 22:06:24,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055672070] [2019-10-14 22:06:24,688 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 [2019-10-14 22:06:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:24,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 22:06:24,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:06:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-14 22:06:24,923 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:06:24,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-10-14 22:06:24,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398866070] [2019-10-14 22:06:24,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:06:24,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:24,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:06:24,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:06:24,925 INFO L87 Difference]: Start difference. First operand 9360 states and 13070 transitions. Second operand 5 states. [2019-10-14 22:06:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:29,367 INFO L93 Difference]: Finished difference Result 18939 states and 27059 transitions. [2019-10-14 22:06:29,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:06:29,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2019-10-14 22:06:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:29,418 INFO L225 Difference]: With dead ends: 18939 [2019-10-14 22:06:29,418 INFO L226 Difference]: Without dead ends: 9585 [2019-10-14 22:06:29,441 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:06:29,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9585 states. [2019-10-14 22:06:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9585 to 9469. [2019-10-14 22:06:29,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9469 states. [2019-10-14 22:06:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9469 states to 9469 states and 12528 transitions. [2019-10-14 22:06:29,680 INFO L78 Accepts]: Start accepts. Automaton has 9469 states and 12528 transitions. Word has length 199 [2019-10-14 22:06:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:29,680 INFO L462 AbstractCegarLoop]: Abstraction has 9469 states and 12528 transitions. [2019-10-14 22:06:29,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:06:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 9469 states and 12528 transitions. [2019-10-14 22:06:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-14 22:06:29,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:29,686 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 22:06:29,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:06:29,892 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:29,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:29,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1382706633, now seen corresponding path program 1 times [2019-10-14 22:06:29,894 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:29,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616665368] [2019-10-14 22:06:29,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:29,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:29,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat