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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:44:01,397 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-15 01:44:01,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:44:01,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:44:01,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:44:01,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:44:01,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:44:01,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:44:01,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:44:01,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:44:01,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:44:01,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:44:01,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:44:01,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:44:01,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:44:01,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:44:01,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:44:01,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:44:01,456 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 [2019-10-15 01:44:01,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:44:01,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:44:01,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:44:01,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:44:01,478 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:44:01,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:44:01,479 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:44:01,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:44:01,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:44:01,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:44:01,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:44:01,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:44:01,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:44:01,480 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:44:01,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:44:01,481 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:44:01,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:44:01,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:44:01,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:44:01,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:44:01,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:44:01,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:44:01,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:44:01,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:44:01,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:44:01,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:44:01,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:44:01,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:44:01,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:44:01,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:44:01,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:44:01,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:44:01,804 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:44:01,804 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:44:01,805 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2019-10-15 01:44:01,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2335b1808/6cb48e66881c4f95a9017c2c13f58384/FLAGec1f1d889 [2019-10-15 01:44:02,586 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:44:02,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label48.c [2019-10-15 01:44:02,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2335b1808/6cb48e66881c4f95a9017c2c13f58384/FLAGec1f1d889 [2019-10-15 01:44:02,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2335b1808/6cb48e66881c4f95a9017c2c13f58384 [2019-10-15 01:44:02,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:44:02,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:44:02,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:02,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:44:02,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:44:02,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:02" (1/1) ... [2019-10-15 01:44:02,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5171f16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:02, skipping insertion in model container [2019-10-15 01:44:02,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:02" (1/1) ... [2019-10-15 01:44:02,784 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:44:02,870 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:44:03,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:03,793 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:44:04,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:04,205 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:44:04,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04 WrapperNode [2019-10-15 01:44:04,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:04,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:44:04,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:44:04,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:44:04,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (1/1) ... [2019-10-15 01:44:04,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (1/1) ... [2019-10-15 01:44:04,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (1/1) ... [2019-10-15 01:44:04,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (1/1) ... [2019-10-15 01:44:04,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (1/1) ... [2019-10-15 01:44:04,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (1/1) ... [2019-10-15 01:44:04,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (1/1) ... [2019-10-15 01:44:04,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:44:04,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:44:04,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:44:04,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:44:04,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (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 [2019-10-15 01:44:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:44:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:44:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:44:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:44:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:44:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:44:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:44:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:44:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:44:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:44:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:44:07,673 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:44:07,673 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:44:07,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:07 BoogieIcfgContainer [2019-10-15 01:44:07,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:44:07,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:44:07,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:44:07,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:44:07,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:44:02" (1/3) ... [2019-10-15 01:44:07,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494bd8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:07, skipping insertion in model container [2019-10-15 01:44:07,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:04" (2/3) ... [2019-10-15 01:44:07,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494bd8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:07, skipping insertion in model container [2019-10-15 01:44:07,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:07" (3/3) ... [2019-10-15 01:44:07,684 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label48.c [2019-10-15 01:44:07,695 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:44:07,704 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:44:07,717 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:44:07,744 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:44:07,745 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:44:07,745 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:44:07,745 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:44:07,745 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:44:07,745 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:44:07,746 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:44:07,746 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:44:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 01:44:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:44:07,784 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:07,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:44:07,787 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:07,794 INFO L82 PathProgramCache]: Analyzing trace with hash 136473894, now seen corresponding path program 1 times [2019-10-15 01:44:07,805 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:07,805 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095403927] [2019-10-15 01:44:07,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:07,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:07,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:08,548 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095403927] [2019-10-15 01:44:08,549 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:08,549 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:44:08,550 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195316836] [2019-10-15 01:44:08,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:44:08,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:08,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:44:08,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:44:08,572 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2019-10-15 01:44:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:10,368 INFO L93 Difference]: Finished difference Result 613 states and 1182 transitions. [2019-10-15 01:44:10,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:44:10,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-15 01:44:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:10,391 INFO L225 Difference]: With dead ends: 613 [2019-10-15 01:44:10,391 INFO L226 Difference]: Without dead ends: 448 [2019-10-15 01:44:10,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:44:10,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-10-15 01:44:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 301. [2019-10-15 01:44:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-10-15 01:44:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 547 transitions. [2019-10-15 01:44:10,468 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 547 transitions. Word has length 149 [2019-10-15 01:44:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:10,469 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 547 transitions. [2019-10-15 01:44:10,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:44:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 547 transitions. [2019-10-15 01:44:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:44:10,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:10,476 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:44:10,476 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:10,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1532428014, now seen corresponding path program 1 times [2019-10-15 01:44:10,477 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:10,477 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695286799] [2019-10-15 01:44:10,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:10,478 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:10,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:10,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695286799] [2019-10-15 01:44:10,780 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:10,780 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:44:10,780 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544723560] [2019-10-15 01:44:10,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:44:10,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:10,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:44:10,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:10,786 INFO L87 Difference]: Start difference. First operand 301 states and 547 transitions. Second operand 3 states. [2019-10-15 01:44:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:11,794 INFO L93 Difference]: Finished difference Result 891 states and 1642 transitions. [2019-10-15 01:44:11,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:44:11,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:44:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:11,804 INFO L225 Difference]: With dead ends: 891 [2019-10-15 01:44:11,811 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:44:11,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:44:11,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:44:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:44:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 993 transitions. [2019-10-15 01:44:11,866 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 993 transitions. Word has length 161 [2019-10-15 01:44:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:11,867 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 993 transitions. [2019-10-15 01:44:11,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:44:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 993 transitions. [2019-10-15 01:44:11,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-15 01:44:11,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:11,874 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:44:11,874 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash -478374162, now seen corresponding path program 1 times [2019-10-15 01:44:11,875 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:11,875 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711645038] [2019-10-15 01:44:11,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:11,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:11,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:12,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711645038] [2019-10-15 01:44:12,135 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:12,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:44:12,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235080689] [2019-10-15 01:44:12,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:44:12,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:12,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:44:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:12,144 INFO L87 Difference]: Start difference. First operand 595 states and 993 transitions. Second operand 3 states. [2019-10-15 01:44:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:13,148 INFO L93 Difference]: Finished difference Result 1773 states and 3010 transitions. [2019-10-15 01:44:13,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:44:13,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-10-15 01:44:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:13,157 INFO L225 Difference]: With dead ends: 1773 [2019-10-15 01:44:13,158 INFO L226 Difference]: Without dead ends: 1183 [2019-10-15 01:44:13,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-10-15 01:44:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2019-10-15 01:44:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-10-15 01:44:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1957 transitions. [2019-10-15 01:44:13,208 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1957 transitions. Word has length 163 [2019-10-15 01:44:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:13,209 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 1957 transitions. [2019-10-15 01:44:13,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:44:13,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1957 transitions. [2019-10-15 01:44:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:44:13,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:13,216 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 01:44:13,217 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:13,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1566267949, now seen corresponding path program 1 times [2019-10-15 01:44:13,218 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:13,218 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921012302] [2019-10-15 01:44:13,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:13,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:13,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:13,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921012302] [2019-10-15 01:44:13,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:13,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:44:13,388 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871628778] [2019-10-15 01:44:13,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:44:13,389 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:13,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:44:13,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:44:13,389 INFO L87 Difference]: Start difference. First operand 1183 states and 1957 transitions. Second operand 6 states. [2019-10-15 01:44:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:15,162 INFO L93 Difference]: Finished difference Result 3663 states and 6809 transitions. [2019-10-15 01:44:15,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:44:15,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2019-10-15 01:44:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:15,200 INFO L225 Difference]: With dead ends: 3663 [2019-10-15 01:44:15,201 INFO L226 Difference]: Without dead ends: 2485 [2019-10-15 01:44:15,206 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 [2019-10-15 01:44:15,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2019-10-15 01:44:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2401. [2019-10-15 01:44:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2401 states. [2019-10-15 01:44:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 4059 transitions. [2019-10-15 01:44:15,365 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 4059 transitions. Word has length 166 [2019-10-15 01:44:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:15,365 INFO L462 AbstractCegarLoop]: Abstraction has 2401 states and 4059 transitions. [2019-10-15 01:44:15,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:44:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 4059 transitions. [2019-10-15 01:44:15,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:44:15,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:15,377 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:44:15,377 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1349581157, now seen corresponding path program 1 times [2019-10-15 01:44:15,378 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:15,379 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125387849] [2019-10-15 01:44:15,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:15,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:15,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:15,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125387849] [2019-10-15 01:44:15,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742500093] [2019-10-15 01:44:15,536 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 [2019-10-15 01:44:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:15,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:44:15,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:44:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:15,880 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:44:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:15,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1558033338] [2019-10-15 01:44:16,016 INFO L162 IcfgInterpreter]: Started Sifa with 153 locations of interest [2019-10-15 01:44:16,016 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:44:16,025 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:44:16,038 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:44:16,039 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:44:16,487 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-15 01:44:17,096 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 206 for LOIs [2019-10-15 01:44:17,394 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2019-10-15 01:44:17,635 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2019-10-15 01:44:17,771 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2019-10-15 01:44:18,034 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-15 01:44:20,486 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-10-15 01:44:20,990 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-10-15 01:44:21,227 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:21,923 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 219 [2019-10-15 01:44:22,190 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:22,302 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:22,429 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:22,698 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:44:23,103 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 366 [2019-10-15 01:44:23,269 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2019-10-15 01:44:24,275 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-10-15 01:44:24,389 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:24,783 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-10-15 01:44:25,369 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:25,560 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 367 [2019-10-15 01:44:25,681 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:25,841 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 366 [2019-10-15 01:44:25,954 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 366 [2019-10-15 01:44:26,061 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:44:26,221 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 367 [2019-10-15 01:44:26,700 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-10-15 01:44:27,231 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:27,776 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 219 [2019-10-15 01:44:27,890 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-10-15 01:44:28,039 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:28,162 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 366 [2019-10-15 01:44:28,268 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:28,412 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 366 [2019-10-15 01:44:29,595 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:29,962 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-10-15 01:44:30,545 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:30,706 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 366 [2019-10-15 01:44:30,813 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 365 [2019-10-15 01:44:30,966 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 366 [2019-10-15 01:44:31,307 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2019-10-15 01:44:32,125 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-10-15 01:44:32,644 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-10-15 01:44:32,645 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 166 for LOIs [2019-10-15 01:44:33,368 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 111 [2019-10-15 01:44:33,474 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-10-15 01:44:33,838 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 113 [2019-10-15 01:44:33,957 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-10-15 01:44:34,362 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 115 [2019-10-15 01:44:34,760 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-10-15 01:44:35,168 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 115 [2019-10-15 01:44:35,320 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-15 01:44:35,455 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 159