java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:04:56,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:04:56,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:04:56,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:04:56,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:04:56,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:04:56,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:04:56,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:04:56,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:04:56,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:04:56,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:04:56,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:04:56,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:04:56,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:04:56,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:04:56,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:04:56,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:04:56,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:04:56,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:04:56,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:04:56,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:04:56,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:04:56,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:04:56,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:04:56,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:04:56,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:04:56,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:04:56,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:04:56,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:04:56,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:04:56,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:04:56,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:04:56,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:04:56,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:04:56,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:04:56,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:04:56,336 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 22:04:56,358 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:04:56,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:04:56,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:04:56,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:04:56,363 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:04:56,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:04:56,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:04:56,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:04:56,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:04:56,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:04:56,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:04:56,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:04:56,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:04:56,366 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:04:56,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:04:56,366 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:04:56,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:04:56,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:04:56,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:04:56,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:04:56,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:04:56,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:04:56,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:04:56,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:04:56,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:04:56,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:04:56,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:04:56,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:04:56,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:04:56,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:04:56,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:04:56,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:04:56,663 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:04:56,664 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:04:56,664 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label49.c [2019-10-14 22:04:56,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6406038/a8d5c0f3372645b0a1af2c770d9ee00a/FLAG7d9a6ccf8 [2019-10-14 22:04:57,381 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:04:57,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label49.c [2019-10-14 22:04:57,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6406038/a8d5c0f3372645b0a1af2c770d9ee00a/FLAG7d9a6ccf8 [2019-10-14 22:04:57,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6406038/a8d5c0f3372645b0a1af2c770d9ee00a [2019-10-14 22:04:57,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:04:57,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:04:57,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:04:57,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:04:57,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:04:57,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:57" (1/1) ... [2019-10-14 22:04:57,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599a6431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:57, skipping insertion in model container [2019-10-14 22:04:57,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:04:57" (1/1) ... [2019-10-14 22:04:57,616 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:04:57,693 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:04:58,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:04:58,645 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:04:58,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:04:59,003 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:04:59,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59 WrapperNode [2019-10-14 22:04:59,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:04:59,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:04:59,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:04:59,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:04:59,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (1/1) ... [2019-10-14 22:04:59,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (1/1) ... [2019-10-14 22:04:59,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (1/1) ... [2019-10-14 22:04:59,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (1/1) ... [2019-10-14 22:04:59,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (1/1) ... [2019-10-14 22:04:59,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (1/1) ... [2019-10-14 22:04:59,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (1/1) ... [2019-10-14 22:04:59,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:04:59,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:04:59,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:04:59,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:04:59,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (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 22:04:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:04:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:04:59,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:04:59,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:04:59,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:04:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:04:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:04:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:05:01,707 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:05:01,712 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:05:01,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:01 BoogieIcfgContainer [2019-10-14 22:05:01,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:05:01,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:05:01,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:05:01,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:05:01,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:04:57" (1/3) ... [2019-10-14 22:05:01,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f9d401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:01, skipping insertion in model container [2019-10-14 22:05:01,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:04:59" (2/3) ... [2019-10-14 22:05:01,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f9d401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:01, skipping insertion in model container [2019-10-14 22:05:01,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:01" (3/3) ... [2019-10-14 22:05:01,725 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label49.c [2019-10-14 22:05:01,737 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:05:01,749 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:05:01,760 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:05:01,806 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:05:01,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:05:01,807 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:05:01,807 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:05:01,807 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:05:01,807 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:05:01,808 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:05:01,808 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:05:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-14 22:05:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 22:05:01,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:01,863 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:01,865 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:01,874 INFO L82 PathProgramCache]: Analyzing trace with hash -971896627, now seen corresponding path program 1 times [2019-10-14 22:05:01,886 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:01,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938863819] [2019-10-14 22:05:01,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:01,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:01,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:02,358 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 22:05:02,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938863819] [2019-10-14 22:05:02,360 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:02,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:05:02,361 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072410275] [2019-10-14 22:05:02,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:05:02,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:05:02,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:05:02,385 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-14 22:05:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:09,054 INFO L93 Difference]: Finished difference Result 1530 states and 2865 transitions. [2019-10-14 22:05:09,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:05:09,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-10-14 22:05:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:09,098 INFO L225 Difference]: With dead ends: 1530 [2019-10-14 22:05:09,099 INFO L226 Difference]: Without dead ends: 1038 [2019-10-14 22:05:09,108 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 [2019-10-14 22:05:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-14 22:05:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-14 22:05:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-14 22:05:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1703 transitions. [2019-10-14 22:05:09,270 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1703 transitions. Word has length 66 [2019-10-14 22:05:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:09,272 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1703 transitions. [2019-10-14 22:05:09,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:05:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1703 transitions. [2019-10-14 22:05:09,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-14 22:05:09,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:09,291 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:09,291 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:09,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash -653341620, now seen corresponding path program 1 times [2019-10-14 22:05:09,292 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:09,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867734043] [2019-10-14 22:05:09,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:09,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:09,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:09,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867734043] [2019-10-14 22:05:09,642 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:09,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:05:09,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798560061] [2019-10-14 22:05:09,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:05:09,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:09,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:05:09,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:05:09,649 INFO L87 Difference]: Start difference. First operand 1031 states and 1703 transitions. Second operand 9 states. [2019-10-14 22:05:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:15,909 INFO L93 Difference]: Finished difference Result 3128 states and 5278 transitions. [2019-10-14 22:05:15,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:05:15,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 136 [2019-10-14 22:05:15,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:15,937 INFO L225 Difference]: With dead ends: 3128 [2019-10-14 22:05:15,937 INFO L226 Difference]: Without dead ends: 2103 [2019-10-14 22:05:15,944 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 [2019-10-14 22:05:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2019-10-14 22:05:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2069. [2019-10-14 22:05:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2019-10-14 22:05:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3304 transitions. [2019-10-14 22:05:16,102 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3304 transitions. Word has length 136 [2019-10-14 22:05:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:16,105 INFO L462 AbstractCegarLoop]: Abstraction has 2069 states and 3304 transitions. [2019-10-14 22:05:16,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:05:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3304 transitions. [2019-10-14 22:05:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 22:05:16,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:16,119 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:16,120 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:16,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1932739549, now seen corresponding path program 1 times [2019-10-14 22:05:16,122 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:16,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334058208] [2019-10-14 22:05:16,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:16,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:16,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:16,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334058208] [2019-10-14 22:05:16,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:16,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:05:16,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407330043] [2019-10-14 22:05:16,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:05:16,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:16,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:05:16,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:05:16,541 INFO L87 Difference]: Start difference. First operand 2069 states and 3304 transitions. Second operand 8 states. [2019-10-14 22:05:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:20,568 INFO L93 Difference]: Finished difference Result 5214 states and 8402 transitions. [2019-10-14 22:05:20,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:05:20,570 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2019-10-14 22:05:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:20,590 INFO L225 Difference]: With dead ends: 5214 [2019-10-14 22:05:20,590 INFO L226 Difference]: Without dead ends: 3151 [2019-10-14 22:05:20,596 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:05:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2019-10-14 22:05:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2096. [2019-10-14 22:05:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2019-10-14 22:05:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2805 transitions. [2019-10-14 22:05:20,695 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2805 transitions. Word has length 137 [2019-10-14 22:05:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:20,698 INFO L462 AbstractCegarLoop]: Abstraction has 2096 states and 2805 transitions. [2019-10-14 22:05:20,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:05:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2805 transitions. [2019-10-14 22:05:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-14 22:05:20,702 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:20,702 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:20,702 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:20,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1687278437, now seen corresponding path program 1 times [2019-10-14 22:05:20,703 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:20,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405577946] [2019-10-14 22:05:20,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:20,704 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:20,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:21,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405577946] [2019-10-14 22:05:21,152 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:21,152 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:05:21,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616057452] [2019-10-14 22:05:21,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:05:21,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:21,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:05:21,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:05:21,154 INFO L87 Difference]: Start difference. First operand 2096 states and 2805 transitions. Second operand 9 states. [2019-10-14 22:05:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:26,653 INFO L93 Difference]: Finished difference Result 8373 states and 11591 transitions. [2019-10-14 22:05:26,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 22:05:26,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2019-10-14 22:05:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:26,686 INFO L225 Difference]: With dead ends: 8373 [2019-10-14 22:05:26,687 INFO L226 Difference]: Without dead ends: 6283 [2019-10-14 22:05:26,693 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:05:26,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6283 states. [2019-10-14 22:05:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6283 to 6269. [2019-10-14 22:05:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6269 states. [2019-10-14 22:05:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 8083 transitions. [2019-10-14 22:05:26,850 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 8083 transitions. Word has length 229 [2019-10-14 22:05:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:26,851 INFO L462 AbstractCegarLoop]: Abstraction has 6269 states and 8083 transitions. [2019-10-14 22:05:26,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:05:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 8083 transitions. [2019-10-14 22:05:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-10-14 22:05:26,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:26,857 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:26,858 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:26,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1656258471, now seen corresponding path program 1 times [2019-10-14 22:05:26,859 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:26,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571380458] [2019-10-14 22:05:26,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:26,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:26,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:27,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571380458] [2019-10-14 22:05:27,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043018141] [2019-10-14 22:05:27,296 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 22:05:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:27,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:05:27,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:05:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:27,632 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:05:27,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:05:27,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353969430] [2019-10-14 22:05:27,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:05:27,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:27,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:05:27,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:05:27,635 INFO L87 Difference]: Start difference. First operand 6269 states and 8083 transitions. Second operand 3 states. [2019-10-14 22:05:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:29,158 INFO L93 Difference]: Finished difference Result 12532 states and 16169 transitions. [2019-10-14 22:05:29,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:05:29,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2019-10-14 22:05:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:29,188 INFO L225 Difference]: With dead ends: 12532 [2019-10-14 22:05:29,188 INFO L226 Difference]: Without dead ends: 6269 [2019-10-14 22:05:29,204 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:05:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2019-10-14 22:05:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 5932. [2019-10-14 22:05:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5932 states. [2019-10-14 22:05:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 7457 transitions. [2019-10-14 22:05:29,371 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 7457 transitions. Word has length 315 [2019-10-14 22:05:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:29,373 INFO L462 AbstractCegarLoop]: Abstraction has 5932 states and 7457 transitions. [2019-10-14 22:05:29,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:05:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 7457 transitions. [2019-10-14 22:05:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2019-10-14 22:05:29,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:29,390 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:29,593 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:05:29,594 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:29,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:29,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1176610783, now seen corresponding path program 1 times [2019-10-14 22:05:29,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:29,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861319533] [2019-10-14 22:05:29,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:29,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:29,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-10-14 22:05:30,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861319533] [2019-10-14 22:05:30,189 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949089177] [2019-10-14 22:05:30,189 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 22:05:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:30,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:05:30,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:05:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-10-14 22:05:30,598 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:05:30,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-14 22:05:30,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606345962] [2019-10-14 22:05:30,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:05:30,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:30,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:05:30,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:05:30,600 INFO L87 Difference]: Start difference. First operand 5932 states and 7457 transitions. Second operand 3 states. [2019-10-14 22:05:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:32,151 INFO L93 Difference]: Finished difference Result 7958 states and 9766 transitions. [2019-10-14 22:05:32,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:05:32,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 470 [2019-10-14 22:05:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:32,195 INFO L225 Difference]: With dead ends: 7958 [2019-10-14 22:05:32,195 INFO L226 Difference]: Without dead ends: 7956 [2019-10-14 22:05:32,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 473 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:05:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7956 states. [2019-10-14 22:05:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7956 to 6608. [2019-10-14 22:05:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6608 states. [2019-10-14 22:05:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6608 states to 6608 states and 8271 transitions. [2019-10-14 22:05:32,378 INFO L78 Accepts]: Start accepts. Automaton has 6608 states and 8271 transitions. Word has length 470 [2019-10-14 22:05:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:32,379 INFO L462 AbstractCegarLoop]: Abstraction has 6608 states and 8271 transitions. [2019-10-14 22:05:32,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:05:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 6608 states and 8271 transitions. [2019-10-14 22:05:32,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2019-10-14 22:05:32,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:32,398 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:32,602 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:05:32,603 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:32,603 INFO L82 PathProgramCache]: Analyzing trace with hash 106035057, now seen corresponding path program 1 times [2019-10-14 22:05:32,604 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:32,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012258060] [2019-10-14 22:05:32,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:32,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:32,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 293 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-14 22:05:33,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012258060] [2019-10-14 22:05:33,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538015690] [2019-10-14 22:05:33,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)