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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:11:42,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:11:42,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:11:43,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:11:43,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:11:43,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:11:43,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:11:43,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:11:43,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:11:43,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:11:43,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:11:43,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:11:43,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:11:43,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:11:43,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:11:43,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:11:43,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:11:43,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:11:43,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:11:43,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:11:43,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:11:43,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:11:43,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:11:43,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:11:43,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 20:11:43,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 20:11:43,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 20:11:43,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 20:11:43,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 20:11:43,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 20:11:43,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:11:43,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:11:43,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:11:43,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:11:43,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:11:43,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:11:43,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:11:43,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:11:43,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:11:43,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:11:43,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:11:43,070 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 [2019-10-13 20:11:43,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:11:43,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:11:43,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:11:43,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:11:43,086 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:11:43,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:11:43,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:11:43,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:11:43,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:11:43,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:11:43,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:11:43,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:11:43,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:11:43,088 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:11:43,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:11:43,089 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:11:43,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:11:43,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:11:43,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:11:43,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:11:43,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:11:43,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:11:43,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:11:43,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:11:43,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:11:43,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:11:43,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:11:43,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:11:43,091 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 [2019-10-13 20:11:43,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:11:43,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:11:43,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:11:43,400 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:11:43,401 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:11:43,401 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label54.c [2019-10-13 20:11:43,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7264675f0/7360a6923d8843818d1d55f07879a22e/FLAG44e583fbd [2019-10-13 20:11:44,240 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:11:44,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label54.c [2019-10-13 20:11:44,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7264675f0/7360a6923d8843818d1d55f07879a22e/FLAG44e583fbd [2019-10-13 20:11:44,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7264675f0/7360a6923d8843818d1d55f07879a22e [2019-10-13 20:11:44,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:11:44,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:11:44,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:11:44,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:11:44,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:11:44,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:44" (1/1) ... [2019-10-13 20:11:44,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338e2a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:44, skipping insertion in model container [2019-10-13 20:11:44,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:44" (1/1) ... [2019-10-13 20:11:44,360 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:11:44,476 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:11:45,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:11:45,771 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:11:46,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:11:46,299 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:11:46,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46 WrapperNode [2019-10-13 20:11:46,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:11:46,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:11:46,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:11:46,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:11:46,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (1/1) ... [2019-10-13 20:11:46,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (1/1) ... [2019-10-13 20:11:46,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (1/1) ... [2019-10-13 20:11:46,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (1/1) ... [2019-10-13 20:11:46,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (1/1) ... [2019-10-13 20:11:46,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (1/1) ... [2019-10-13 20:11:46,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (1/1) ... [2019-10-13 20:11:46,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:11:46,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:11:46,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:11:46,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:11:46,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (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 [2019-10-13 20:11:46,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:11:46,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:11:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 20:11:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 20:11:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 20:11:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:11:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 20:11:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 20:11:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 20:11:46,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:11:46,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:11:46,778 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:11:46,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:11:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:11:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:11:50,630 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:11:50,630 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 20:11:50,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:50 BoogieIcfgContainer [2019-10-13 20:11:50,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:11:50,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:11:50,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:11:50,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:11:50,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:11:44" (1/3) ... [2019-10-13 20:11:50,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6d82d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:50, skipping insertion in model container [2019-10-13 20:11:50,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:46" (2/3) ... [2019-10-13 20:11:50,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6d82d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:50, skipping insertion in model container [2019-10-13 20:11:50,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:50" (3/3) ... [2019-10-13 20:11:50,654 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label54.c [2019-10-13 20:11:50,665 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:11:50,678 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:11:50,690 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:11:50,740 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:11:50,740 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:11:50,740 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:11:50,740 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:11:50,741 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:11:50,741 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:11:50,741 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:11:50,741 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:11:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 20:11:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-13 20:11:50,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:11:50,803 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] [2019-10-13 20:11:50,805 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:11:50,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:11:50,811 INFO L82 PathProgramCache]: Analyzing trace with hash 466768385, now seen corresponding path program 1 times [2019-10-13 20:11:50,823 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:11:50,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239086732] [2019-10-13 20:11:50,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:11:50,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:11:50,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:11:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:11:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:11:51,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239086732] [2019-10-13 20:11:51,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:11:51,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:11:51,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640687100] [2019-10-13 20:11:51,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:11:51,178 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:11:51,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:11:51,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:11:51,198 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-10-13 20:11:58,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:11:58,387 INFO L93 Difference]: Finished difference Result 2970 states and 5743 transitions. [2019-10-13 20:11:58,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:11:58,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2019-10-13 20:11:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:11:58,422 INFO L225 Difference]: With dead ends: 2970 [2019-10-13 20:11:58,423 INFO L226 Difference]: Without dead ends: 2114 [2019-10-13 20:11:58,434 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:11:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-10-13 20:11:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-10-13 20:11:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-10-13 20:11:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3476 transitions. [2019-10-13 20:11:58,639 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3476 transitions. Word has length 40 [2019-10-13 20:11:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:11:58,640 INFO L462 AbstractCegarLoop]: Abstraction has 2114 states and 3476 transitions. [2019-10-13 20:11:58,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:11:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3476 transitions. [2019-10-13 20:11:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-13 20:11:58,647 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:11:58,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:11:58,648 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:11:58,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:11:58,648 INFO L82 PathProgramCache]: Analyzing trace with hash 653681341, now seen corresponding path program 1 times [2019-10-13 20:11:58,649 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:11:58,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143722776] [2019-10-13 20:11:58,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:11:58,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:11:58,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:11:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:11:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:11:58,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143722776] [2019-10-13 20:11:58,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:11:58,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:11:58,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378721607] [2019-10-13 20:11:58,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:11:58,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:11:58,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:11:58,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:11:58,846 INFO L87 Difference]: Start difference. First operand 2114 states and 3476 transitions. Second operand 5 states. [2019-10-13 20:12:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:12:04,304 INFO L93 Difference]: Finished difference Result 6436 states and 10709 transitions. [2019-10-13 20:12:04,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:12:04,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2019-10-13 20:12:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:12:04,341 INFO L225 Difference]: With dead ends: 6436 [2019-10-13 20:12:04,341 INFO L226 Difference]: Without dead ends: 4328 [2019-10-13 20:12:04,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 20:12:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-10-13 20:12:04,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-10-13 20:12:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-10-13 20:12:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6660 transitions. [2019-10-13 20:12:04,491 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6660 transitions. Word has length 109 [2019-10-13 20:12:04,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:12:04,492 INFO L462 AbstractCegarLoop]: Abstraction has 4296 states and 6660 transitions. [2019-10-13 20:12:04,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:12:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6660 transitions. [2019-10-13 20:12:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 20:12:04,495 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:12:04,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:12:04,496 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:12:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:04,496 INFO L82 PathProgramCache]: Analyzing trace with hash 468776008, now seen corresponding path program 1 times [2019-10-13 20:12:04,497 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:12:04,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007304056] [2019-10-13 20:12:04,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:04,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:04,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:12:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:12:04,712 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007304056] [2019-10-13 20:12:04,713 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:12:04,713 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:12:04,713 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675246220] [2019-10-13 20:12:04,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:12:04,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:12:04,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:12:04,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:12:04,720 INFO L87 Difference]: Start difference. First operand 4296 states and 6660 transitions. Second operand 6 states. [2019-10-13 20:12:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:12:09,632 INFO L93 Difference]: Finished difference Result 10829 states and 16791 transitions. [2019-10-13 20:12:09,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:12:09,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-10-13 20:12:09,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:12:09,676 INFO L225 Difference]: With dead ends: 10829 [2019-10-13 20:12:09,676 INFO L226 Difference]: Without dead ends: 6539 [2019-10-13 20:12:09,688 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 [2019-10-13 20:12:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2019-10-13 20:12:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6505. [2019-10-13 20:12:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-10-13 20:12:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 8565 transitions. [2019-10-13 20:12:09,963 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 8565 transitions. Word has length 136 [2019-10-13 20:12:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:12:09,965 INFO L462 AbstractCegarLoop]: Abstraction has 6505 states and 8565 transitions. [2019-10-13 20:12:09,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:12:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 8565 transitions. [2019-10-13 20:12:09,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 20:12:09,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:12:09,986 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 20:12:09,986 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:12:09,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:09,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1286187466, now seen corresponding path program 1 times [2019-10-13 20:12:09,988 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:12:09,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419285803] [2019-10-13 20:12:09,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:09,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:09,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:12:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-13 20:12:10,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419285803] [2019-10-13 20:12:10,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:12:10,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:12:10,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837030663] [2019-10-13 20:12:10,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:12:10,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:12:10,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:12:10,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:12:10,254 INFO L87 Difference]: Start difference. First operand 6505 states and 8565 transitions. Second operand 4 states. [2019-10-13 20:12:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:12:16,875 INFO L93 Difference]: Finished difference Result 25805 states and 34806 transitions. [2019-10-13 20:12:16,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:12:16,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2019-10-13 20:12:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:12:16,971 INFO L225 Difference]: With dead ends: 25805 [2019-10-13 20:12:16,971 INFO L226 Difference]: Without dead ends: 19306 [2019-10-13 20:12:16,991 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:12:17,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19306 states. [2019-10-13 20:12:17,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19306 to 19306. [2019-10-13 20:12:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19306 states. [2019-10-13 20:12:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19306 states to 19306 states and 24415 transitions. [2019-10-13 20:12:17,449 INFO L78 Accepts]: Start accepts. Automaton has 19306 states and 24415 transitions. Word has length 215 [2019-10-13 20:12:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:12:17,451 INFO L462 AbstractCegarLoop]: Abstraction has 19306 states and 24415 transitions. [2019-10-13 20:12:17,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:12:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 19306 states and 24415 transitions. [2019-10-13 20:12:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2019-10-13 20:12:17,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:12:17,473 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:12:17,473 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:12:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:17,474 INFO L82 PathProgramCache]: Analyzing trace with hash -679480734, now seen corresponding path program 1 times [2019-10-13 20:12:17,474 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:12:17,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882485303] [2019-10-13 20:12:17,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:17,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:17,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:12:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 197 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-13 20:12:18,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882485303] [2019-10-13 20:12:18,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109163702] [2019-10-13 20:12:18,564 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 [2019-10-13 20:12:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:18,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 20:12:18,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:12:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 20:12:19,002 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:12:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 197 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-13 20:12:19,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1624051986] [2019-10-13 20:12:19,340 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 467 [2019-10-13 20:12:19,404 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 20:12:19,405 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)