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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:06:02,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:06:02,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:06:02,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:06:02,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:06:02,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:06:02,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:06:02,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:06:02,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:06:02,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:06:02,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:06:02,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:06:02,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:06:02,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:06:02,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:06:02,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:06:02,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:06:02,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:06:02,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:06:02,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:06:02,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:06:02,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:06:02,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:06:02,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:06:02,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 20:06:02,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:06:02,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:06:02,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:06:02,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:06:02,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:06:02,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:06:02,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:06:02,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:06:02,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:06:02,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:06:02,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:06:02,326 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 20:06:02,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:06:02,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:06:02,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:06:02,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:06:02,343 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:06:02,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:06:02,343 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:06:02,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:06:02,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:06:02,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:06:02,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:06:02,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:06:02,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:06:02,345 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:06:02,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:06:02,345 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:06:02,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:06:02,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:06:02,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:06:02,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:06:02,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:06:02,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:06:02,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:06:02,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:06:02,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:06:02,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:06:02,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:06:02,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:06:02,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:06:02,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:06:02,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:06:02,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:06:02,685 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:06:02,685 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:06:02,686 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2019-10-13 20:06:02,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2b4f6310/6e45bd8740a942deb488d4d29a837caa/FLAGc9540fd94 [2019-10-13 20:06:03,492 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:06:03,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2019-10-13 20:06:03,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2b4f6310/6e45bd8740a942deb488d4d29a837caa/FLAGc9540fd94 [2019-10-13 20:06:03,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2b4f6310/6e45bd8740a942deb488d4d29a837caa [2019-10-13 20:06:03,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:06:03,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:06:03,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:06:03,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:06:03,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:06:03,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:06:03" (1/1) ... [2019-10-13 20:06:03,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54268d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:03, skipping insertion in model container [2019-10-13 20:06:03,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:06:03" (1/1) ... [2019-10-13 20:06:03,599 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:06:03,753 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:06:05,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:06:05,295 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:06:05,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:06:06,016 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:06:06,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06 WrapperNode [2019-10-13 20:06:06,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:06:06,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:06:06,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:06:06,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:06:06,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (1/1) ... [2019-10-13 20:06:06,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (1/1) ... [2019-10-13 20:06:06,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (1/1) ... [2019-10-13 20:06:06,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (1/1) ... [2019-10-13 20:06:06,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (1/1) ... [2019-10-13 20:06:06,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (1/1) ... [2019-10-13 20:06:06,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (1/1) ... [2019-10-13 20:06:06,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:06:06,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:06:06,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:06:06,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:06:06,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (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 20:06:06,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:06:06,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:06:06,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 20:06:06,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 20:06:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 20:06:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 20:06:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:06:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 20:06:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 20:06:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 20:06:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 20:06:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:06:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:06:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:06:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:06:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:06:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:06:11,614 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:06:11,615 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 20:06:11,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:11 BoogieIcfgContainer [2019-10-13 20:06:11,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:06:11,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:06:11,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:06:11,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:06:11,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:06:03" (1/3) ... [2019-10-13 20:06:11,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bbb896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:11, skipping insertion in model container [2019-10-13 20:06:11,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:06" (2/3) ... [2019-10-13 20:06:11,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bbb896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:11, skipping insertion in model container [2019-10-13 20:06:11,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:11" (3/3) ... [2019-10-13 20:06:11,640 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label49.c [2019-10-13 20:06:11,653 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:06:11,667 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:06:11,681 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:06:11,731 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:06:11,731 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:06:11,731 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:06:11,731 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:06:11,731 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:06:11,732 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:06:11,732 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:06:11,732 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:06:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-13 20:06:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-13 20:06:11,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:11,790 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:06:11,793 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:11,800 INFO L82 PathProgramCache]: Analyzing trace with hash 838851165, now seen corresponding path program 1 times [2019-10-13 20:06:11,811 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:11,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325771036] [2019-10-13 20:06:11,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:11,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:11,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:12,207 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 20:06:12,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325771036] [2019-10-13 20:06:12,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:12,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:06:12,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247568404] [2019-10-13 20:06:12,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:06:12,216 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:06:12,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:06:12,234 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-10-13 20:06:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:17,631 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-10-13 20:06:17,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:06:17,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-10-13 20:06:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:17,679 INFO L225 Difference]: With dead ends: 2443 [2019-10-13 20:06:17,679 INFO L226 Difference]: Without dead ends: 1542 [2019-10-13 20:06:17,693 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:06:17,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-10-13 20:06:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-10-13 20:06:17,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-10-13 20:06:17,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2858 transitions. [2019-10-13 20:06:17,862 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2858 transitions. Word has length 48 [2019-10-13 20:06:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:17,862 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2858 transitions. [2019-10-13 20:06:17,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:06:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2858 transitions. [2019-10-13 20:06:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 20:06:17,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:17,880 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:17,880 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:17,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:17,881 INFO L82 PathProgramCache]: Analyzing trace with hash 728529281, now seen corresponding path program 1 times [2019-10-13 20:06:17,882 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:17,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155237804] [2019-10-13 20:06:17,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:17,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:17,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:18,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155237804] [2019-10-13 20:06:18,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:18,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:06:18,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035568560] [2019-10-13 20:06:18,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:06:18,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:18,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:06:18,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:18,236 INFO L87 Difference]: Start difference. First operand 1542 states and 2858 transitions. Second operand 6 states. [2019-10-13 20:06:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:24,609 INFO L93 Difference]: Finished difference Result 4705 states and 8757 transitions. [2019-10-13 20:06:24,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:06:24,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2019-10-13 20:06:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:24,629 INFO L225 Difference]: With dead ends: 4705 [2019-10-13 20:06:24,630 INFO L226 Difference]: Without dead ends: 3169 [2019-10-13 20:06:24,634 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 20:06:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2019-10-13 20:06:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3139. [2019-10-13 20:06:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3139 states. [2019-10-13 20:06:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5494 transitions. [2019-10-13 20:06:24,722 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5494 transitions. Word has length 125 [2019-10-13 20:06:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:24,722 INFO L462 AbstractCegarLoop]: Abstraction has 3139 states and 5494 transitions. [2019-10-13 20:06:24,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:06:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5494 transitions. [2019-10-13 20:06:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 20:06:24,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:24,726 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:24,726 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:24,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:24,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1356702912, now seen corresponding path program 1 times [2019-10-13 20:06:24,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:24,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295153218] [2019-10-13 20:06:24,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:24,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:24,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:24,915 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295153218] [2019-10-13 20:06:24,915 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:24,915 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:06:24,916 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723428489] [2019-10-13 20:06:24,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:06:24,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:24,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:06:24,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:06:24,917 INFO L87 Difference]: Start difference. First operand 3139 states and 5494 transitions. Second operand 5 states. [2019-10-13 20:06:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:31,891 INFO L93 Difference]: Finished difference Result 9601 states and 17038 transitions. [2019-10-13 20:06:31,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 20:06:31,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2019-10-13 20:06:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:31,929 INFO L225 Difference]: With dead ends: 9601 [2019-10-13 20:06:31,929 INFO L226 Difference]: Without dead ends: 6468 [2019-10-13 20:06:31,938 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2019-10-13 20:06:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 6392. [2019-10-13 20:06:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6392 states. [2019-10-13 20:06:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6392 states to 6392 states and 10141 transitions. [2019-10-13 20:06:32,213 INFO L78 Accepts]: Start accepts. Automaton has 6392 states and 10141 transitions. Word has length 128 [2019-10-13 20:06:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:32,215 INFO L462 AbstractCegarLoop]: Abstraction has 6392 states and 10141 transitions. [2019-10-13 20:06:32,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:06:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6392 states and 10141 transitions. [2019-10-13 20:06:32,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 20:06:32,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:32,219 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:32,220 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:32,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1145162067, now seen corresponding path program 1 times [2019-10-13 20:06:32,221 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:32,222 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116816990] [2019-10-13 20:06:32,222 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:32,222 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:32,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:32,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116816990] [2019-10-13 20:06:32,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:32,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:06:32,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820990244] [2019-10-13 20:06:32,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:06:32,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:32,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:06:32,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:32,497 INFO L87 Difference]: Start difference. First operand 6392 states and 10141 transitions. Second operand 6 states.