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/Problem04_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:59:45,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:59:45,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:59:45,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:59:45,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:59:45,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:59:45,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:59:45,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:59:45,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:59:45,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:59:45,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:59:45,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:59:45,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:59:45,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:59:45,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:59:45,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:59:45,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:59:45,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:59:45,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:59:45,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:59:45,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:59:45,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:59:45,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:59:45,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:59:45,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:59:45,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:59:45,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:59:45,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:59:45,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:59:45,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:59:45,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:59:45,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:59:45,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:59:45,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:59:45,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:59:45,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:59:45,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:59:45,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:59:45,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:59:45,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:59:45,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:59:45,786 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 [2019-10-14 23:59:45,802 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:59:45,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:59:45,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:59:45,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:59:45,804 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:59:45,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:59:45,804 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:59:45,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:59:45,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:59:45,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:59:45,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:59:45,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:59:45,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:59:45,806 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:59:45,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:59:45,806 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:59:45,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:59:45,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:59:45,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:59:45,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:59:45,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:59:45,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:59:45,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:59:45,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:59:45,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:59:45,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:59:45,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:59:45,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:59:45,808 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 [2019-10-14 23:59:46,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:59:46,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:59:46,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:59:46,137 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:59:46,137 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:59:46,138 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2019-10-14 23:59:46,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e611a006/91254d0033ea40bc8678f2b334c25d68/FLAG8f2c76113 [2019-10-14 23:59:46,991 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:59:46,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2019-10-14 23:59:47,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e611a006/91254d0033ea40bc8678f2b334c25d68/FLAG8f2c76113 [2019-10-14 23:59:47,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e611a006/91254d0033ea40bc8678f2b334c25d68 [2019-10-14 23:59:47,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:59:47,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:59:47,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:47,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:59:47,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:59:47,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:47" (1/1) ... [2019-10-14 23:59:47,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad4c578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:47, skipping insertion in model container [2019-10-14 23:59:47,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:47" (1/1) ... [2019-10-14 23:59:47,098 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:59:47,276 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:59:49,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:49,096 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:59:49,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:49,905 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:59:49,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49 WrapperNode [2019-10-14 23:59:49,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:49,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:59:49,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:59:49,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:59:49,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:49,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:50,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:50,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:50,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:50,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:50,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:50,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:59:50,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:59:50,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:59:50,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:59:50,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (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 [2019-10-14 23:59:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:59:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:59:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:59:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 23:59:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 23:59:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-14 23:59:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:59:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:59:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 23:59:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 23:59:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-14 23:59:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:59:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:59:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:59:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:59:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:59:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:59:55,089 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:59:55,090 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:59:55,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:55 BoogieIcfgContainer [2019-10-14 23:59:55,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:59:55,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:59:55,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:59:55,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:59:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:59:47" (1/3) ... [2019-10-14 23:59:55,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c926db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:55, skipping insertion in model container [2019-10-14 23:59:55,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (2/3) ... [2019-10-14 23:59:55,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c926db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:55, skipping insertion in model container [2019-10-14 23:59:55,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:55" (3/3) ... [2019-10-14 23:59:55,102 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label28.c [2019-10-14 23:59:55,111 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:59:55,121 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:59:55,132 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:59:55,166 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:59:55,167 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:59:55,167 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:59:55,167 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:59:55,167 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:59:55,167 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:59:55,167 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:59:55,168 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:59:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-10-14 23:59:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2019-10-14 23:59:55,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:55,285 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:55,287 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:55,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:55,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1404863229, now seen corresponding path program 1 times [2019-10-14 23:59:55,303 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:55,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649038993] [2019-10-14 23:59:55,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:55,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:55,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:57,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649038993] [2019-10-14 23:59:57,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:57,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:59:57,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464519173] [2019-10-14 23:59:57,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:59:57,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:59:57,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:59:57,549 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-10-15 00:00:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:00:02,793 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-10-15 00:00:02,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:00:02,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 820 [2019-10-15 00:00:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:00:02,856 INFO L225 Difference]: With dead ends: 2644 [2019-10-15 00:00:02,857 INFO L226 Difference]: Without dead ends: 1676 [2019-10-15 00:00:02,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 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 00:00:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-10-15 00:00:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-10-15 00:00:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-10-15 00:00:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2956 transitions. [2019-10-15 00:00:03,047 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2956 transitions. Word has length 820 [2019-10-15 00:00:03,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:00:03,050 INFO L462 AbstractCegarLoop]: Abstraction has 1676 states and 2956 transitions. [2019-10-15 00:00:03,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:00:03,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2956 transitions. [2019-10-15 00:00:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2019-10-15 00:00:03,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:03,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:03,092 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:03,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1746825554, now seen corresponding path program 1 times [2019-10-15 00:00:03,093 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:03,093 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379054663] [2019-10-15 00:00:03,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:03,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:03,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:03,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379054663] [2019-10-15 00:00:03,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:00:03,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:00:03,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563540273] [2019-10-15 00:00:03,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:00:03,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:00:03,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:00:03,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:00:03,860 INFO L87 Difference]: Start difference. First operand 1676 states and 2956 transitions. Second operand 6 states. [2019-10-15 00:00:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:00:09,728 INFO L93 Difference]: Finished difference Result 5104 states and 9045 transitions. [2019-10-15 00:00:09,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:00:09,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 878 [2019-10-15 00:00:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:00:09,762 INFO L225 Difference]: With dead ends: 5104 [2019-10-15 00:00:09,762 INFO L226 Difference]: Without dead ends: 3434 [2019-10-15 00:00:09,771 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 00:00:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-10-15 00:00:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3404. [2019-10-15 00:00:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2019-10-15 00:00:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5691 transitions. [2019-10-15 00:00:09,943 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5691 transitions. Word has length 878 [2019-10-15 00:00:09,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:00:09,943 INFO L462 AbstractCegarLoop]: Abstraction has 3404 states and 5691 transitions. [2019-10-15 00:00:09,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:00:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5691 transitions. [2019-10-15 00:00:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2019-10-15 00:00:09,965 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:09,965 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:09,966 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:09,968 INFO L82 PathProgramCache]: Analyzing trace with hash -745523523, now seen corresponding path program 1 times [2019-10-15 00:00:09,968 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:09,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805461068] [2019-10-15 00:00:09,968 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:09,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:09,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:11,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805461068] [2019-10-15 00:00:11,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517499841] [2019-10-15 00:00:11,112 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 00:00:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:11,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 00:00:11,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:00:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:12,812 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:00:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:13,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1954715882] [2019-10-15 00:00:13,761 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 887 [2019-10-15 00:00:13,865 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:00:13,866 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)