/usr/bin/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/Problem18_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:56:44,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:56:44,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:56:44,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:56:44,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:56:44,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:56:44,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:56:44,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:56:44,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:56:44,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:56:44,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:56:44,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:56:44,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:56:44,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:56:44,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:56:44,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:56:44,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:56:44,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:56:44,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:56:44,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:56:44,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:56:44,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:56:44,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:56:44,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:56:44,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:56:44,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:56:44,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:56:44,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:56:44,141 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 [2019-11-06 22:56:44,155 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:56:44,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:56:44,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:56:44,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:56:44,157 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:56:44,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:56:44,157 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:56:44,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:56:44,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:56:44,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:56:44,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:56:44,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:56:44,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:56:44,158 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:56:44,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:56:44,159 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:56:44,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:56:44,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:56:44,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:56:44,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:56:44,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:56:44,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:56:44,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:56:44,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:56:44,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:56:44,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:56:44,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:56:44,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:56:44,162 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 [2019-11-06 22:56:44,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:56:44,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:56:44,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:56:44,542 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:56:44,542 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:56:44,543 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label16.c [2019-11-06 22:56:44,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d059f183a/5759808460ab4a8dacf2f65e86ac49d4/FLAGdfa5669e6 [2019-11-06 22:56:45,359 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:56:45,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label16.c [2019-11-06 22:56:45,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d059f183a/5759808460ab4a8dacf2f65e86ac49d4/FLAGdfa5669e6 [2019-11-06 22:56:45,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d059f183a/5759808460ab4a8dacf2f65e86ac49d4 [2019-11-06 22:56:45,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:56:45,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:56:45,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:56:45,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:56:45,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:56:45,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b40a1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:45, skipping insertion in model container [2019-11-06 22:56:45,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:45" (1/1) ... [2019-11-06 22:56:45,572 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:56:45,713 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:56:47,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:56:47,313 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:56:47,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:56:47,767 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:56:47,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47 WrapperNode [2019-11-06 22:56:47,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:56:47,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:56:47,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:56:47,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:56:47,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (1/1) ... [2019-11-06 22:56:47,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (1/1) ... [2019-11-06 22:56:47,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (1/1) ... [2019-11-06 22:56:47,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (1/1) ... [2019-11-06 22:56:47,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (1/1) ... [2019-11-06 22:56:47,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (1/1) ... [2019-11-06 22:56:47,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (1/1) ... [2019-11-06 22:56:47,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:56:47,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:56:47,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:56:47,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:56:47,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (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 [2019-11-06 22:56:48,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:56:48,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:56:48,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:56:48,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:56:48,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:56:48,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:56:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:56:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:56:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:56:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:56:51,949 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:56:51,950 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:56:51,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:51 BoogieIcfgContainer [2019-11-06 22:56:51,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:56:51,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:56:51,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:56:51,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:56:51,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:45" (1/3) ... [2019-11-06 22:56:51,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c3c11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:51, skipping insertion in model container [2019-11-06 22:56:51,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:47" (2/3) ... [2019-11-06 22:56:51,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c3c11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:51, skipping insertion in model container [2019-11-06 22:56:51,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:51" (3/3) ... [2019-11-06 22:56:51,960 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label16.c [2019-11-06 22:56:51,970 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:56:51,980 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:56:51,992 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:56:52,028 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:56:52,029 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:56:52,029 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:56:52,029 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:56:52,029 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:56:52,030 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:56:52,030 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:56:52,030 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:56:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 22:56:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:56:52,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:56:52,076 INFO L410 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] [2019-11-06 22:56:52,078 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:56:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:56:52,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1134727921, now seen corresponding path program 1 times [2019-11-06 22:56:52,095 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:56:52,095 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474038042] [2019-11-06 22:56:52,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:56:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:56:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:56:52,527 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474038042] [2019-11-06 22:56:52,528 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:56:52,528 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:56:52,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835016676] [2019-11-06 22:56:52,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:56:52,538 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:56:52,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:56:52,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:56:52,555 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-11-06 22:56:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:56:57,068 INFO L93 Difference]: Finished difference Result 2248 states and 4319 transitions. [2019-11-06 22:56:57,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:56:57,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:56:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:56:57,101 INFO L225 Difference]: With dead ends: 2248 [2019-11-06 22:56:57,101 INFO L226 Difference]: Without dead ends: 1412 [2019-11-06 22:56:57,109 INFO L630 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 [2019-11-06 22:56:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-11-06 22:56:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-11-06 22:56:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-11-06 22:56:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2630 transitions. [2019-11-06 22:56:57,310 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2630 transitions. Word has length 52 [2019-11-06 22:56:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:56:57,312 INFO L462 AbstractCegarLoop]: Abstraction has 1412 states and 2630 transitions. [2019-11-06 22:56:57,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:56:57,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2630 transitions. [2019-11-06 22:56:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 22:56:57,320 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:56:57,320 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:56:57,320 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:56:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:56:57,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1821965093, now seen corresponding path program 1 times [2019-11-06 22:56:57,321 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:56:57,321 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664877969] [2019-11-06 22:56:57,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:56:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:56:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:56:57,560 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664877969] [2019-11-06 22:56:57,561 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:56:57,561 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:56:57,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623002277] [2019-11-06 22:56:57,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:56:57,564 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:56:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:56:57,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:56:57,565 INFO L87 Difference]: Start difference. First operand 1412 states and 2630 transitions. Second operand 6 states. [2019-11-06 22:57:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:03,128 INFO L93 Difference]: Finished difference Result 4294 states and 8031 transitions. [2019-11-06 22:57:03,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:57:03,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2019-11-06 22:57:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:03,158 INFO L225 Difference]: With dead ends: 4294 [2019-11-06 22:57:03,158 INFO L226 Difference]: Without dead ends: 2888 [2019-11-06 22:57:03,163 INFO L630 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 [2019-11-06 22:57:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2019-11-06 22:57:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2864. [2019-11-06 22:57:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-11-06 22:57:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 5127 transitions. [2019-11-06 22:57:03,278 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 5127 transitions. Word has length 125 [2019-11-06 22:57:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:03,280 INFO L462 AbstractCegarLoop]: Abstraction has 2864 states and 5127 transitions. [2019-11-06 22:57:03,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:57:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 5127 transitions. [2019-11-06 22:57:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-06 22:57:03,291 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:03,291 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:57:03,291 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:03,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1074622240, now seen corresponding path program 1 times [2019-11-06 22:57:03,292 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:03,292 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626950024] [2019-11-06 22:57:03,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:03,409 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626950024] [2019-11-06 22:57:03,409 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:03,409 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:57:03,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492409353] [2019-11-06 22:57:03,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:57:03,410 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:03,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:57:03,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:57:03,411 INFO L87 Difference]: Start difference. First operand 2864 states and 5127 transitions. Second operand 5 states. [2019-11-06 22:57:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:09,370 INFO L93 Difference]: Finished difference Result 8048 states and 14478 transitions. [2019-11-06 22:57:09,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:57:09,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2019-11-06 22:57:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:09,412 INFO L225 Difference]: With dead ends: 8048 [2019-11-06 22:57:09,412 INFO L226 Difference]: Without dead ends: 5190 [2019-11-06 22:57:09,420 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:57:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2019-11-06 22:57:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 5092. [2019-11-06 22:57:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5092 states. [2019-11-06 22:57:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 8027 transitions. [2019-11-06 22:57:09,563 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 8027 transitions. Word has length 128 [2019-11-06 22:57:09,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:09,564 INFO L462 AbstractCegarLoop]: Abstraction has 5092 states and 8027 transitions. [2019-11-06 22:57:09,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:57:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 8027 transitions. [2019-11-06 22:57:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-06 22:57:09,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:09,567 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:57:09,567 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash -454172028, now seen corresponding path program 1 times [2019-11-06 22:57:09,568 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:09,568 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661839776] [2019-11-06 22:57:09,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:09,789 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661839776] [2019-11-06 22:57:09,789 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:09,789 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:57:09,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774477211] [2019-11-06 22:57:09,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:57:09,790 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:57:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:57:09,791 INFO L87 Difference]: Start difference. First operand 5092 states and 8027 transitions. Second operand 4 states. [2019-11-06 22:57:15,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:15,889 INFO L93 Difference]: Finished difference Result 15874 states and 25164 transitions. [2019-11-06 22:57:15,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:57:15,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-11-06 22:57:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:15,947 INFO L225 Difference]: With dead ends: 15874 [2019-11-06 22:57:15,948 INFO L226 Difference]: Without dead ends: 10788 [2019-11-06 22:57:15,962 INFO L630 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 [2019-11-06 22:57:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2019-11-06 22:57:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 10788. [2019-11-06 22:57:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10788 states. [2019-11-06 22:57:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10788 states to 10788 states and 15447 transitions. [2019-11-06 22:57:16,330 INFO L78 Accepts]: Start accepts. Automaton has 10788 states and 15447 transitions. Word has length 158 [2019-11-06 22:57:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:16,333 INFO L462 AbstractCegarLoop]: Abstraction has 10788 states and 15447 transitions. [2019-11-06 22:57:16,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:57:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 10788 states and 15447 transitions. [2019-11-06 22:57:16,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-11-06 22:57:16,339 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:16,339 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:57:16,340 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:16,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:16,340 INFO L82 PathProgramCache]: Analyzing trace with hash 628188816, now seen corresponding path program 1 times [2019-11-06 22:57:16,340 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:16,341 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171152701] [2019-11-06 22:57:16,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:16,663 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171152701] [2019-11-06 22:57:16,664 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:16,664 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:57:16,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147136990] [2019-11-06 22:57:16,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:57:16,665 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:16,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:57:16,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:57:16,665 INFO L87 Difference]: Start difference. First operand 10788 states and 15447 transitions. Second operand 6 states.