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/Problem16_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:08:18,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:08:18,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:08:18,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:08:18,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:08:18,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:08:18,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:08:18,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:08:18,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:08:18,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:08:18,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:08:18,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:08:18,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:08:18,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:08:18,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:08:18,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:08:18,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:08:18,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:08:18,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:08:18,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:08:18,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:08:18,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:08:18,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:08:18,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:08:18,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:08:18,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:08:18,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:08:18,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:08:18,353 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 00:08:18,366 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:08:18,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:08:18,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:08:18,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:08:18,368 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:08:18,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:08:18,369 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:08:18,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:08:18,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:08:18,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:08:18,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:08:18,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:08:18,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:08:18,370 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:08:18,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:08:18,370 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:08:18,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:08:18,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:08:18,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:08:18,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:08:18,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:08:18,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:08:18,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:08:18,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:08:18,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:08:18,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:08:18,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:08:18,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:08:18,373 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 00:08:18,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:08:18,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:08:18,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:08:18,722 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:08:18,723 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:08:18,723 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2019-10-15 00:08:18,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b075d3955/9b0e5067e2484ed98ceefdb3de1e0c9c/FLAGc95c27bc2 [2019-10-15 00:08:19,389 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:08:19,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2019-10-15 00:08:19,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b075d3955/9b0e5067e2484ed98ceefdb3de1e0c9c/FLAGc95c27bc2 [2019-10-15 00:08:19,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b075d3955/9b0e5067e2484ed98ceefdb3de1e0c9c [2019-10-15 00:08:19,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:08:19,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:08:19,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:08:19,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:08:19,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:08:19,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:19" (1/1) ... [2019-10-15 00:08:19,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283ca1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:19, skipping insertion in model container [2019-10-15 00:08:19,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:19" (1/1) ... [2019-10-15 00:08:19,635 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:08:19,722 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:08:20,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:08:20,618 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:08:20,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:08:20,948 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:08:20,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20 WrapperNode [2019-10-15 00:08:20,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:08:20,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:08:20,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:08:20,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:08:20,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (1/1) ... [2019-10-15 00:08:20,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (1/1) ... [2019-10-15 00:08:21,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (1/1) ... [2019-10-15 00:08:21,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (1/1) ... [2019-10-15 00:08:21,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (1/1) ... [2019-10-15 00:08:21,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (1/1) ... [2019-10-15 00:08:21,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (1/1) ... [2019-10-15 00:08:21,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:08:21,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:08:21,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:08:21,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:08:21,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (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 00:08:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:08:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:08:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:08:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 00:08:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:08:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:08:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 00:08:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:08:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:08:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:08:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:08:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:08:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:08:23,792 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:08:23,793 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:08:23,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:23 BoogieIcfgContainer [2019-10-15 00:08:23,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:08:23,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:08:23,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:08:23,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:08:23,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:08:19" (1/3) ... [2019-10-15 00:08:23,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2987ab77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:08:23, skipping insertion in model container [2019-10-15 00:08:23,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:20" (2/3) ... [2019-10-15 00:08:23,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2987ab77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:08:23, skipping insertion in model container [2019-10-15 00:08:23,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:23" (3/3) ... [2019-10-15 00:08:23,814 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label17.c [2019-10-15 00:08:23,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:08:23,838 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:08:23,850 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:08:23,902 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:08:23,903 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:08:23,903 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:08:23,904 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:08:23,904 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:08:23,904 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:08:23,904 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:08:23,905 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:08:23,948 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-15 00:08:23,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-15 00:08:23,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:08:23,961 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] [2019-10-15 00:08:23,963 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:08:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:08:23,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1802126811, now seen corresponding path program 1 times [2019-10-15 00:08:23,979 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:08:23,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003391209] [2019-10-15 00:08:23,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:23,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:23,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:08:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:24,354 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 00:08:24,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003391209] [2019-10-15 00:08:24,360 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:08:24,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:08:24,361 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624673121] [2019-10-15 00:08:24,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:08:24,368 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:08:24,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:08:24,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:08:24,387 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 3 states. [2019-10-15 00:08:26,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:08:26,871 INFO L93 Difference]: Finished difference Result 1153 states and 2141 transitions. [2019-10-15 00:08:26,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:08:26,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2019-10-15 00:08:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:08:26,897 INFO L225 Difference]: With dead ends: 1153 [2019-10-15 00:08:26,897 INFO L226 Difference]: Without dead ends: 682 [2019-10-15 00:08:26,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 00:08:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-15 00:08:27,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-15 00:08:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-15 00:08:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1184 transitions. [2019-10-15 00:08:27,021 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1184 transitions. Word has length 64 [2019-10-15 00:08:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:08:27,022 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1184 transitions. [2019-10-15 00:08:27,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:08:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1184 transitions. [2019-10-15 00:08:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 00:08:27,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:08:27,029 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:08:27,030 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:08:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:08:27,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2014427524, now seen corresponding path program 1 times [2019-10-15 00:08:27,032 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:08:27,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236864539] [2019-10-15 00:08:27,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:27,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:27,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:08:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:08:27,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236864539] [2019-10-15 00:08:27,268 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:08:27,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:08:27,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840011732] [2019-10-15 00:08:27,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:08:27,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:08:27,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:08:27,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:08:27,272 INFO L87 Difference]: Start difference. First operand 682 states and 1184 transitions. Second operand 6 states. [2019-10-15 00:08:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:08:30,110 INFO L93 Difference]: Finished difference Result 2063 states and 3618 transitions. [2019-10-15 00:08:30,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:08:30,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2019-10-15 00:08:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:08:30,129 INFO L225 Difference]: With dead ends: 2063 [2019-10-15 00:08:30,130 INFO L226 Difference]: Without dead ends: 1387 [2019-10-15 00:08:30,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 00:08:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2019-10-15 00:08:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1372. [2019-10-15 00:08:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2019-10-15 00:08:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2274 transitions. [2019-10-15 00:08:30,216 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2274 transitions. Word has length 134 [2019-10-15 00:08:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:08:30,220 INFO L462 AbstractCegarLoop]: Abstraction has 1372 states and 2274 transitions. [2019-10-15 00:08:30,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:08:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2274 transitions. [2019-10-15 00:08:30,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 00:08:30,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:08:30,235 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 00:08:30,235 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:08:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:08:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2143421116, now seen corresponding path program 1 times [2019-10-15 00:08:30,236 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:08:30,237 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232845121] [2019-10-15 00:08:30,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:30,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:30,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:08:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:08:30,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232845121] [2019-10-15 00:08:30,449 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:08:30,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:08:30,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28482177] [2019-10-15 00:08:30,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:08:30,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:08:30,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:08:30,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:08:30,459 INFO L87 Difference]: Start difference. First operand 1372 states and 2274 transitions. Second operand 6 states. [2019-10-15 00:08:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:08:33,450 INFO L93 Difference]: Finished difference Result 3466 states and 5799 transitions. [2019-10-15 00:08:33,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:08:33,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2019-10-15 00:08:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:08:33,474 INFO L225 Difference]: With dead ends: 3466 [2019-10-15 00:08:33,485 INFO L226 Difference]: Without dead ends: 2100 [2019-10-15 00:08:33,492 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 00:08:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2019-10-15 00:08:33,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2073. [2019-10-15 00:08:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2019-10-15 00:08:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3322 transitions. [2019-10-15 00:08:33,680 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3322 transitions. Word has length 138 [2019-10-15 00:08:33,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:08:33,683 INFO L462 AbstractCegarLoop]: Abstraction has 2073 states and 3322 transitions. [2019-10-15 00:08:33,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:08:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3322 transitions. [2019-10-15 00:08:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 00:08:33,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:08:33,690 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:33,690 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:08:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:08:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1919929679, now seen corresponding path program 1 times [2019-10-15 00:08:33,691 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:08:33,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105565875] [2019-10-15 00:08:33,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:33,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:33,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:08:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:08:33,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105565875] [2019-10-15 00:08:33,947 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:08:33,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:08:33,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659893735] [2019-10-15 00:08:33,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:08:33,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:08:33,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:08:33,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:08:33,949 INFO L87 Difference]: Start difference. First operand 2073 states and 3322 transitions. Second operand 6 states. [2019-10-15 00:08:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:08:36,749 INFO L93 Difference]: Finished difference Result 5216 states and 8462 transitions. [2019-10-15 00:08:36,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:08:36,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2019-10-15 00:08:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:08:36,774 INFO L225 Difference]: With dead ends: 5216 [2019-10-15 00:08:36,774 INFO L226 Difference]: Without dead ends: 3149 [2019-10-15 00:08:36,781 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 00:08:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2019-10-15 00:08:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3128. [2019-10-15 00:08:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3128 states. [2019-10-15 00:08:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4658 transitions. [2019-10-15 00:08:36,887 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4658 transitions. Word has length 169 [2019-10-15 00:08:36,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:08:36,889 INFO L462 AbstractCegarLoop]: Abstraction has 3128 states and 4658 transitions. [2019-10-15 00:08:36,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:08:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4658 transitions. [2019-10-15 00:08:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-15 00:08:36,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:08:36,895 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:36,895 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:08:36,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:08:36,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1854023577, now seen corresponding path program 1 times [2019-10-15 00:08:36,896 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:08:36,897 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305813892] [2019-10-15 00:08:36,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:36,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:36,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:08:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:08:37,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305813892] [2019-10-15 00:08:37,114 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:08:37,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:08:37,156 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769096494] [2019-10-15 00:08:37,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:08:37,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:08:37,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:08:37,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:08:37,159 INFO L87 Difference]: Start difference. First operand 3128 states and 4658 transitions. Second operand 6 states. [2019-10-15 00:08:41,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:08:41,904 INFO L93 Difference]: Finished difference Result 10089 states and 15852 transitions. [2019-10-15 00:08:41,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:08:41,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2019-10-15 00:08:41,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:08:41,952 INFO L225 Difference]: With dead ends: 10089 [2019-10-15 00:08:41,952 INFO L226 Difference]: Without dead ends: 6967 [2019-10-15 00:08:41,963 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-15 00:08:41,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6967 states. [2019-10-15 00:08:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6967 to 6961. [2019-10-15 00:08:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6961 states. [2019-10-15 00:08:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 10570 transitions. [2019-10-15 00:08:42,179 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 10570 transitions. Word has length 213 [2019-10-15 00:08:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:08:42,180 INFO L462 AbstractCegarLoop]: Abstraction has 6961 states and 10570 transitions. [2019-10-15 00:08:42,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:08:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 10570 transitions. [2019-10-15 00:08:42,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2019-10-15 00:08:42,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:08:42,197 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:08:42,197 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:08:42,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:08:42,198 INFO L82 PathProgramCache]: Analyzing trace with hash -37255589, now seen corresponding path program 1 times [2019-10-15 00:08:42,198 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:08:42,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975195677] [2019-10-15 00:08:42,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:42,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:42,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:08:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 114 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:08:42,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975195677] [2019-10-15 00:08:42,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894265281] [2019-10-15 00:08:42,615 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 00:08:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:42,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 00:08:42,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:08:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 00:08:43,156 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:08:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 114 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:08:43,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 00:08:43,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-15 00:08:43,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695504977] [2019-10-15 00:08:43,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:08:43,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:08:43,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:08:43,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 00:08:43,507 INFO L87 Difference]: Start difference. First operand 6961 states and 10570 transitions. Second operand 5 states. [2019-10-15 00:08:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:08:46,480 INFO L93 Difference]: Finished difference Result 16062 states and 25088 transitions. [2019-10-15 00:08:46,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 00:08:46,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2019-10-15 00:08:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:08:46,548 INFO L225 Difference]: With dead ends: 16062 [2019-10-15 00:08:46,549 INFO L226 Difference]: Without dead ends: 9107 [2019-10-15 00:08:46,576 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 666 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-15 00:08:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2019-10-15 00:08:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 9028. [2019-10-15 00:08:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9028 states. [2019-10-15 00:08:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9028 states to 9028 states and 12595 transitions. [2019-10-15 00:08:46,887 INFO L78 Accepts]: Start accepts. Automaton has 9028 states and 12595 transitions. Word has length 336 [2019-10-15 00:08:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:08:46,888 INFO L462 AbstractCegarLoop]: Abstraction has 9028 states and 12595 transitions. [2019-10-15 00:08:46,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:08:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9028 states and 12595 transitions. [2019-10-15 00:08:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2019-10-15 00:08:46,908 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:08:46,908 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 00:08:47,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:08:47,114 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:08:47,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:08:47,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1591738743, now seen corresponding path program 1 times [2019-10-15 00:08:47,115 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:08:47,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037700460] [2019-10-15 00:08:47,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:47,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:47,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:08:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 114 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:08:47,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037700460] [2019-10-15 00:08:47,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962416067] [2019-10-15 00:08:47,690 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 00:08:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:47,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 00:08:47,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:08:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 00:08:48,040 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:08:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 114 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:08:48,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 00:08:48,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2019-10-15 00:08:48,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27200464] [2019-10-15 00:08:48,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:08:48,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:08:48,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:08:48,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-15 00:08:48,393 INFO L87 Difference]: Start difference. First operand 9028 states and 12595 transitions. Second operand 5 states. [2019-10-15 00:08:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:08:51,488 INFO L93 Difference]: Finished difference Result 20890 states and 29869 transitions. [2019-10-15 00:08:51,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 00:08:51,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 396 [2019-10-15 00:08:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:08:51,570 INFO L225 Difference]: With dead ends: 20890 [2019-10-15 00:08:51,570 INFO L226 Difference]: Without dead ends: 11868 [2019-10-15 00:08:51,603 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 787 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-15 00:08:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11868 states. [2019-10-15 00:08:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11868 to 11156. [2019-10-15 00:08:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11156 states. [2019-10-15 00:08:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11156 states to 11156 states and 15524 transitions. [2019-10-15 00:08:51,894 INFO L78 Accepts]: Start accepts. Automaton has 11156 states and 15524 transitions. Word has length 396 [2019-10-15 00:08:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:08:51,895 INFO L462 AbstractCegarLoop]: Abstraction has 11156 states and 15524 transitions. [2019-10-15 00:08:51,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:08:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 11156 states and 15524 transitions. [2019-10-15 00:08:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2019-10-15 00:08:51,918 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:08:51,919 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:52,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:08:52,124 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:08:52,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:08:52,124 INFO L82 PathProgramCache]: Analyzing trace with hash -591869981, now seen corresponding path program 1 times [2019-10-15 00:08:52,125 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:08:52,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139584269] [2019-10-15 00:08:52,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:52,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:08:52,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:08:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 264 proven. 74 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 00:08:53,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139584269] [2019-10-15 00:08:53,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605702038] [2019-10-15 00:08:53,264 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 00:08:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:08:53,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 00:08:53,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:08:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 00:08:53,721 INFO L321 TraceCheckSpWp]: Computing backward predicates...