java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:03:54,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:03:54,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:03:54,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 00:03:54,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:03:54,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:03:54,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:03:54,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:03:54,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:03:54,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:03:54,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:03:54,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:03:54,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:03:54,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:03:54,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:03:54,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:03:54,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:03:54,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:03:54,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:03:54,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:03:54,750 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 00:03:54,768 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:03:54,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:03:54,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:03:54,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:03:54,771 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:03:54,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:03:54,772 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:03:54,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:03:54,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:03:54,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:03:54,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:03:54,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:03:54,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:03:54,773 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:03:54,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:03:54,774 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:03:54,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:03:54,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:03:54,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:03:54,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:03:54,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:03:54,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:03:54,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:03:54,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:03:54,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:03:54,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:03:54,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:03:54,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:03:54,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:03:55,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:03:55,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:03:55,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:03:55,070 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:03:55,070 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:03:55,071 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2019-10-15 00:03:55,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1251f6f17/e493712be1064ef39876d7aa13d8df99/FLAG7f18ebbef [2019-10-15 00:03:55,791 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:03:55,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2019-10-15 00:03:55,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1251f6f17/e493712be1064ef39876d7aa13d8df99/FLAG7f18ebbef [2019-10-15 00:03:55,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1251f6f17/e493712be1064ef39876d7aa13d8df99 [2019-10-15 00:03:56,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:03:56,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:03:56,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:03:56,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:03:56,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:03:56,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:55" (1/1) ... [2019-10-15 00:03:56,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae0ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56, skipping insertion in model container [2019-10-15 00:03:56,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:55" (1/1) ... [2019-10-15 00:03:56,028 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:03:56,092 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:03:56,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:03:56,769 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:03:56,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:03:56,983 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:03:56,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56 WrapperNode [2019-10-15 00:03:56,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:03:56,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:03:56,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:03:56,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:03:57,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (1/1) ... [2019-10-15 00:03:57,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (1/1) ... [2019-10-15 00:03:57,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (1/1) ... [2019-10-15 00:03:57,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (1/1) ... [2019-10-15 00:03:57,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (1/1) ... [2019-10-15 00:03:57,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (1/1) ... [2019-10-15 00:03:57,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (1/1) ... [2019-10-15 00:03:57,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:03:57,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:03:57,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:03:57,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:03:57,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (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 00:03:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:03:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:03:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:03:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:03:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:03:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:03:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:03:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:03:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:03:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:03:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:03:59,139 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:03:59,140 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:03:59,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:59 BoogieIcfgContainer [2019-10-15 00:03:59,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:03:59,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:03:59,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:03:59,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:03:59,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:03:55" (1/3) ... [2019-10-15 00:03:59,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cde1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:59, skipping insertion in model container [2019-10-15 00:03:59,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:56" (2/3) ... [2019-10-15 00:03:59,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cde1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:59, skipping insertion in model container [2019-10-15 00:03:59,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:59" (3/3) ... [2019-10-15 00:03:59,156 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label37.c [2019-10-15 00:03:59,167 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:03:59,183 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:03:59,197 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:03:59,246 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:03:59,246 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:03:59,248 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:03:59,248 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:03:59,248 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:03:59,249 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:03:59,249 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:03:59,249 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:03:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-15 00:03:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-15 00:03:59,295 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:03:59,297 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] [2019-10-15 00:03:59,299 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:03:59,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:03:59,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1618793274, now seen corresponding path program 1 times [2019-10-15 00:03:59,344 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:03:59,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891886531] [2019-10-15 00:03:59,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:59,345 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:59,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:03:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:03:59,790 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 00:03:59,791 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891886531] [2019-10-15 00:03:59,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:03:59,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:03:59,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421853274] [2019-10-15 00:03:59,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:03:59,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:03:59,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:03:59,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:03:59,818 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-10-15 00:04:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:02,079 INFO L93 Difference]: Finished difference Result 994 states and 1776 transitions. [2019-10-15 00:04:02,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:04:02,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2019-10-15 00:04:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:02,106 INFO L225 Difference]: With dead ends: 994 [2019-10-15 00:04:02,106 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 00:04:02,119 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 00:04:02,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 00:04:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 614. [2019-10-15 00:04:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 00:04:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 908 transitions. [2019-10-15 00:04:02,225 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 908 transitions. Word has length 55 [2019-10-15 00:04:02,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:02,226 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 908 transitions. [2019-10-15 00:04:02,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:04:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 908 transitions. [2019-10-15 00:04:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 00:04:02,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:02,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:02,234 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:02,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:02,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2133526889, now seen corresponding path program 1 times [2019-10-15 00:04:02,235 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:02,235 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319809773] [2019-10-15 00:04:02,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:02,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:02,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:02,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319809773] [2019-10-15 00:04:02,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:02,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:04:02,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94636366] [2019-10-15 00:04:02,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:04:02,404 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:02,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:04:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:04:02,405 INFO L87 Difference]: Start difference. First operand 614 states and 908 transitions. Second operand 4 states. [2019-10-15 00:04:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:04,308 INFO L93 Difference]: Finished difference Result 2375 states and 3595 transitions. [2019-10-15 00:04:04,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:04:04,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-15 00:04:04,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:04,322 INFO L225 Difference]: With dead ends: 2375 [2019-10-15 00:04:04,322 INFO L226 Difference]: Without dead ends: 1767 [2019-10-15 00:04:04,326 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 00:04:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2019-10-15 00:04:04,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1750. [2019-10-15 00:04:04,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-15 00:04:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2480 transitions. [2019-10-15 00:04:04,414 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2480 transitions. Word has length 128 [2019-10-15 00:04:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:04,418 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2480 transitions. [2019-10-15 00:04:04,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:04:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2480 transitions. [2019-10-15 00:04:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2019-10-15 00:04:04,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:04,446 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 00:04:04,446 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:04,446 INFO L82 PathProgramCache]: Analyzing trace with hash 209251815, now seen corresponding path program 1 times [2019-10-15 00:04:04,447 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:04,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324005832] [2019-10-15 00:04:04,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:04,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:04,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 96 proven. 94 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:04:04,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324005832] [2019-10-15 00:04:04,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287196982] [2019-10-15 00:04:04,872 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 00:04:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:04,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 00:04:05,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:04:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 00:04:05,225 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:04:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 96 proven. 94 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:04:05,479 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 00:04:05,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2019-10-15 00:04:05,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963873396] [2019-10-15 00:04:05,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:04:05,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:05,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:04:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-15 00:04:05,484 INFO L87 Difference]: Start difference. First operand 1750 states and 2480 transitions. Second operand 5 states. [2019-10-15 00:04:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:07,226 INFO L93 Difference]: Finished difference Result 4889 states and 7244 transitions. [2019-10-15 00:04:07,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:04:07,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2019-10-15 00:04:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:07,257 INFO L225 Difference]: With dead ends: 4889 [2019-10-15 00:04:07,257 INFO L226 Difference]: Without dead ends: 3145 [2019-10-15 00:04:07,264 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 550 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-10-15 00:04:07,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2019-10-15 00:04:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 3121. [2019-10-15 00:04:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2019-10-15 00:04:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4269 transitions. [2019-10-15 00:04:07,439 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4269 transitions. Word has length 276 [2019-10-15 00:04:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:07,440 INFO L462 AbstractCegarLoop]: Abstraction has 3121 states and 4269 transitions. [2019-10-15 00:04:07,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:04:07,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4269 transitions. [2019-10-15 00:04:07,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-10-15 00:04:07,453 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:07,453 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, 2, 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] [2019-10-15 00:04:07,658 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:04:07,658 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:07,659 INFO L82 PathProgramCache]: Analyzing trace with hash -705099007, now seen corresponding path program 1 times [2019-10-15 00:04:07,659 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:07,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680740073] [2019-10-15 00:04:07,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:07,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:07,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 6 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:08,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680740073] [2019-10-15 00:04:08,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715407988] [2019-10-15 00:04:08,421 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 [2019-10-15 00:04:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:08,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 00:04:08,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:04:08,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:04:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 00:04:08,783 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:04:08,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:08,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:08,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:08,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:08,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:08,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:04:08,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:04:09,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:04:09,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 00:04:09,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2019-10-15 00:04:09,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683261908] [2019-10-15 00:04:09,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:04:09,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:09,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:04:09,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-15 00:04:09,307 INFO L87 Difference]: Start difference. First operand 3121 states and 4269 transitions. Second operand 5 states. [2019-10-15 00:04:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:10,898 INFO L93 Difference]: Finished difference Result 6295 states and 8674 transitions. [2019-10-15 00:04:10,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 00:04:10,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2019-10-15 00:04:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:10,917 INFO L225 Difference]: With dead ends: 6295 [2019-10-15 00:04:10,918 INFO L226 Difference]: Without dead ends: 3180 [2019-10-15 00:04:10,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 585 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2019-10-15 00:04:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2019-10-15 00:04:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2975. [2019-10-15 00:04:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2975 states. [2019-10-15 00:04:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 4113 transitions. [2019-10-15 00:04:11,027 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 4113 transitions. Word has length 294 [2019-10-15 00:04:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:11,027 INFO L462 AbstractCegarLoop]: Abstraction has 2975 states and 4113 transitions. [2019-10-15 00:04:11,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:04:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 4113 transitions. [2019-10-15 00:04:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-10-15 00:04:11,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:11,043 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:11,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:04:11,251 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:11,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:11,251 INFO L82 PathProgramCache]: Analyzing trace with hash 76212776, now seen corresponding path program 1 times [2019-10-15 00:04:11,252 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:11,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928605781] [2019-10-15 00:04:11,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:11,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:11,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 144 proven. 136 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-15 00:04:11,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928605781] [2019-10-15 00:04:11,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334197449] [2019-10-15 00:04:11,482 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:04:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:11,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 00:04:11,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:04:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2019-10-15 00:04:11,750 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:04:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 144 proven. 136 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-15 00:04:11,916 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 00:04:11,917 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2019-10-15 00:04:11,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366915725] [2019-10-15 00:04:11,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:04:11,918 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:04:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-10-15 00:04:11,919 INFO L87 Difference]: Start difference. First operand 2975 states and 4113 transitions. Second operand 5 states. [2019-10-15 00:04:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:14,066 INFO L93 Difference]: Finished difference Result 7201 states and 10319 transitions. [2019-10-15 00:04:14,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:04:14,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2019-10-15 00:04:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:14,092 INFO L225 Difference]: With dead ends: 7201 [2019-10-15 00:04:14,092 INFO L226 Difference]: Without dead ends: 4232 [2019-10-15 00:04:14,101 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 678 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-15 00:04:14,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2019-10-15 00:04:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 3991. [2019-10-15 00:04:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3991 states. [2019-10-15 00:04:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 5527 transitions. [2019-10-15 00:04:14,213 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 5527 transitions. Word has length 341 [2019-10-15 00:04:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:14,213 INFO L462 AbstractCegarLoop]: Abstraction has 3991 states and 5527 transitions. [2019-10-15 00:04:14,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:04:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 5527 transitions. [2019-10-15 00:04:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2019-10-15 00:04:14,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:14,228 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 00:04:14,436 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:04:14,437 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:14,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:14,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1581254081, now seen corresponding path program 1 times [2019-10-15 00:04:14,437 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:14,438 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171425502] [2019-10-15 00:04:14,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:14,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:14,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 192 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:14,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171425502] [2019-10-15 00:04:14,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589800429] [2019-10-15 00:04:14,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:04:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:15,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 00:04:15,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:04:15,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:15,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:16,961 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~a29~0_555 Int)) (let ((.cse1 (+ v_~a29~0_555 69157))) (let ((.cse0 (mod .cse1 299861))) (and (<= |c_old(~a29~0)| v_~a29~0_555) (not (= .cse0 0)) (< .cse1 0) (<= c_~a29~0 (+ .cse0 277)))))) (exists ((v_~a29~0_555 Int)) (let ((.cse2 (mod (+ v_~a29~0_555 69157) 299861))) (and (<= |c_old(~a29~0)| v_~a29~0_555) (= .cse2 0) (<= c_~a29~0 (+ .cse2 300138))))) (exists ((v_~a29~0_555 Int)) (let ((.cse3 (+ v_~a29~0_555 69157))) (and (<= |c_old(~a29~0)| v_~a29~0_555) (<= 0 .cse3) (<= c_~a29~0 (+ (mod .cse3 299861) 300138)))))) is different from true [2019-10-15 00:04:21,841 WARN L191 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 37 DAG size of output: 15 [2019-10-15 00:04:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 4 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-10-15 00:04:22,131 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:04:22,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:22,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:22,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:22,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:04:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:22,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [878912770] [2019-10-15 00:04:22,500 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 369 [2019-10-15 00:04:22,579 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:04:22,579 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)