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/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:55:06,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:55:06,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:55:06,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:55:06,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:55:06,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:55:06,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:55:06,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:55:06,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:55:06,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:55:06,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:55:06,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:55:06,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:55:06,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:55:06,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:55:06,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:55:06,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:55:06,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:55:06,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:55:06,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:55:06,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:55:06,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:55:06,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:55:06,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:55:06,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:55:06,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:55:06,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:55:06,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:55:06,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:55:06,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:55:06,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:55:06,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:55:06,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:55:06,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:55:06,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:55:06,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:55:06,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:55:06,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:55:06,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:55:06,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:55:06,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:55:06,812 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 23:55:06,843 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:55:06,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:55:06,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:55:06,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:55:06,847 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:55:06,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:55:06,850 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:55:06,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:55:06,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:55:06,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:55:06,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:55:06,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:55:06,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:55:06,851 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:55:06,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:55:06,852 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:55:06,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:55:06,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:55:06,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:55:06,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:55:06,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:55:06,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:55:06,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:55:06,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:55:06,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:55:06,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:55:06,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:55:06,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:55:06,855 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 23:55:07,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:55:07,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:55:07,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:55:07,169 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:55:07,169 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:55:07,170 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2019-10-14 23:55:07,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f1f1c59e/b823a850829e4d0095d71638c1efbd97/FLAGc3e211107 [2019-10-14 23:55:07,775 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:55:07,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2019-10-14 23:55:07,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f1f1c59e/b823a850829e4d0095d71638c1efbd97/FLAGc3e211107 [2019-10-14 23:55:08,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f1f1c59e/b823a850829e4d0095d71638c1efbd97 [2019-10-14 23:55:08,100 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:55:08,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:55:08,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:55:08,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:55:08,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:55:08,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:08,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760969a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08, skipping insertion in model container [2019-10-14 23:55:08,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:08,118 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:55:08,168 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:55:08,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:55:08,730 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:55:08,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:55:08,880 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:55:08,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08 WrapperNode [2019-10-14 23:55:08,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:55:08,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:55:08,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:55:08,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:55:08,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:08,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:08,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:08,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:09,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:09,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:09,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (1/1) ... [2019-10-14 23:55:09,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:55:09,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:55:09,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:55:09,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:55:09,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (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 23:55:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:55:09,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:55:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:55:09,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:55:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:55:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:55:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:55:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:55:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:55:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:55:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:55:10,248 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:55:10,249 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:55:10,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:55:10 BoogieIcfgContainer [2019-10-14 23:55:10,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:55:10,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:55:10,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:55:10,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:55:10,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:55:08" (1/3) ... [2019-10-14 23:55:10,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df0054e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:55:10, skipping insertion in model container [2019-10-14 23:55:10,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:55:08" (2/3) ... [2019-10-14 23:55:10,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df0054e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:55:10, skipping insertion in model container [2019-10-14 23:55:10,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:55:10" (3/3) ... [2019-10-14 23:55:10,259 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2019-10-14 23:55:10,269 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:55:10,278 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:55:10,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:55:10,318 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:55:10,318 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:55:10,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:55:10,318 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:55:10,319 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:55:10,319 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:55:10,319 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:55:10,319 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:55:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-14 23:55:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-14 23:55:10,355 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:55:10,356 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] [2019-10-14 23:55:10,358 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:55:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:55:10,364 INFO L82 PathProgramCache]: Analyzing trace with hash -462333177, now seen corresponding path program 1 times [2019-10-14 23:55:10,373 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:55:10,374 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874817496] [2019-10-14 23:55:10,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:10,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:10,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:55:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:55:10,818 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 23:55:10,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874817496] [2019-10-14 23:55:10,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:55:10,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:55:10,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458201682] [2019-10-14 23:55:10,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:55:10,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:55:10,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:55:10,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:55:10,846 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-14 23:55:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:55:11,699 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2019-10-14 23:55:11,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:55:11,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-10-14 23:55:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:55:11,727 INFO L225 Difference]: With dead ends: 547 [2019-10-14 23:55:11,727 INFO L226 Difference]: Without dead ends: 278 [2019-10-14 23:55:11,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:55:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-14 23:55:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-14 23:55:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-14 23:55:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 406 transitions. [2019-10-14 23:55:11,812 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 406 transitions. Word has length 117 [2019-10-14 23:55:11,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:55:11,813 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 406 transitions. [2019-10-14 23:55:11,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:55:11,813 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 406 transitions. [2019-10-14 23:55:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-14 23:55:11,817 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:55:11,818 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 23:55:11,818 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:55:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:55:11,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1604702730, now seen corresponding path program 1 times [2019-10-14 23:55:11,819 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:55:11,819 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573677428] [2019-10-14 23:55:11,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:11,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:11,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:55:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:55:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:55:11,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573677428] [2019-10-14 23:55:11,934 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:55:11,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:55:11,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240076690] [2019-10-14 23:55:11,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:55:11,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:55:11,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:55:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:55:11,937 INFO L87 Difference]: Start difference. First operand 278 states and 406 transitions. Second operand 5 states. [2019-10-14 23:55:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:55:12,651 INFO L93 Difference]: Finished difference Result 840 states and 1253 transitions. [2019-10-14 23:55:12,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:55:12,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-10-14 23:55:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:55:12,659 INFO L225 Difference]: With dead ends: 840 [2019-10-14 23:55:12,659 INFO L226 Difference]: Without dead ends: 568 [2019-10-14 23:55:12,661 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 [2019-10-14 23:55:12,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-14 23:55:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 558. [2019-10-14 23:55:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-14 23:55:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 788 transitions. [2019-10-14 23:55:12,720 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 788 transitions. Word has length 126 [2019-10-14 23:55:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:55:12,721 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 788 transitions. [2019-10-14 23:55:12,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:55:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 788 transitions. [2019-10-14 23:55:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 23:55:12,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:55:12,728 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-14 23:55:12,728 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:55:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:55:12,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1555807011, now seen corresponding path program 1 times [2019-10-14 23:55:12,729 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:55:12,729 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594166219] [2019-10-14 23:55:12,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:12,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:12,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:55:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:55:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:55:12,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594166219] [2019-10-14 23:55:12,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092228045] [2019-10-14 23:55:12,916 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 [2019-10-14 23:55:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:55:13,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:55:13,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:55:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:55:13,155 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:55:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:55:13,242 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:55:13,242 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-14 23:55:13,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266333506] [2019-10-14 23:55:13,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:55:13,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:55:13,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:55:13,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:55:13,247 INFO L87 Difference]: Start difference. First operand 558 states and 788 transitions. Second operand 3 states. [2019-10-14 23:55:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:55:13,883 INFO L93 Difference]: Finished difference Result 1660 states and 2405 transitions. [2019-10-14 23:55:13,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:55:13,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-10-14 23:55:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:55:13,892 INFO L225 Difference]: With dead ends: 1660 [2019-10-14 23:55:13,893 INFO L226 Difference]: Without dead ends: 1108 [2019-10-14 23:55:13,894 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 272 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:55:13,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2019-10-14 23:55:13,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 836. [2019-10-14 23:55:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2019-10-14 23:55:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1162 transitions. [2019-10-14 23:55:13,934 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1162 transitions. Word has length 137 [2019-10-14 23:55:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:55:13,935 INFO L462 AbstractCegarLoop]: Abstraction has 836 states and 1162 transitions. [2019-10-14 23:55:13,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:55:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1162 transitions. [2019-10-14 23:55:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-14 23:55:13,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:55:13,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:14,145 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:55:14,146 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:55:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:55:14,147 INFO L82 PathProgramCache]: Analyzing trace with hash -879876428, now seen corresponding path program 1 times [2019-10-14 23:55:14,147 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:55:14,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242418887] [2019-10-14 23:55:14,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:14,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:14,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:55:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:55:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:55:14,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242418887] [2019-10-14 23:55:14,261 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:55:14,261 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:55:14,261 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830504369] [2019-10-14 23:55:14,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:55:14,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:55:14,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:55:14,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:55:14,263 INFO L87 Difference]: Start difference. First operand 836 states and 1162 transitions. Second operand 6 states. [2019-10-14 23:55:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:55:15,136 INFO L93 Difference]: Finished difference Result 2238 states and 3188 transitions. [2019-10-14 23:55:15,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:55:15,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2019-10-14 23:55:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:55:15,147 INFO L225 Difference]: With dead ends: 2238 [2019-10-14 23:55:15,147 INFO L226 Difference]: Without dead ends: 1408 [2019-10-14 23:55:15,149 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 [2019-10-14 23:55:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2019-10-14 23:55:15,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1398. [2019-10-14 23:55:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1398 states. [2019-10-14 23:55:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1897 transitions. [2019-10-14 23:55:15,200 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1897 transitions. Word has length 145 [2019-10-14 23:55:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:55:15,200 INFO L462 AbstractCegarLoop]: Abstraction has 1398 states and 1897 transitions. [2019-10-14 23:55:15,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:55:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1897 transitions. [2019-10-14 23:55:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-14 23:55:15,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:55:15,206 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:15,207 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:55:15,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:55:15,207 INFO L82 PathProgramCache]: Analyzing trace with hash 792956155, now seen corresponding path program 1 times [2019-10-14 23:55:15,208 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:55:15,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812018277] [2019-10-14 23:55:15,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:15,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:55:15,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:55:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:55:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:55:15,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812018277] [2019-10-14 23:55:15,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86600194] [2019-10-14 23:55:15,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:55:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:55:15,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:55:15,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:55:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:55:15,486 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:55:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:55:15,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [605824284] [2019-10-14 23:55:15,601 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 157 [2019-10-14 23:55:15,659 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:55:15,659 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)