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/Problem03_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:58:57,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:58:57,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:58:57,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:58:57,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:58:57,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:58:57,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:58:57,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:58:57,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:58:57,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:58:57,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:58:57,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:58:57,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:58:57,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:58:57,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:58:57,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:58:57,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:58:57,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:58:57,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:58:57,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:58:57,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:58:57,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:58:57,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:58:57,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:58:57,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:58:57,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:58:57,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:58:57,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:58:57,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:58:57,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:58:57,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:58:57,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:58:57,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:58:57,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:58:57,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:58:57,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:58:57,711 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 23:58:57,725 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:58:57,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:58:57,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:58:57,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:58:57,727 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:58:57,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:58:57,728 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:58:57,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:58:57,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:58:57,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:58:57,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:58:57,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:58:57,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:58:57,729 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:58:57,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:58:57,729 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:58:57,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:58:57,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:58:57,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:58:57,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:58:57,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:58:57,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:58:57,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:58:57,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:58:57,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:58:57,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:58:57,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:58:57,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:58:57,732 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 23:58:57,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:58:58,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:58:58,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:58:58,015 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:58:58,016 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:58:58,017 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40.c [2019-10-14 23:58:58,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a43c3485/db0ed86f5df94cd081a96394bc7c3407/FLAGc3ff74604 [2019-10-14 23:58:58,761 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:58:58,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label40.c [2019-10-14 23:58:58,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a43c3485/db0ed86f5df94cd081a96394bc7c3407/FLAGc3ff74604 [2019-10-14 23:58:58,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a43c3485/db0ed86f5df94cd081a96394bc7c3407 [2019-10-14 23:58:58,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:58:58,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:58:58,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:58:58,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:58:58,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:58:58,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:58" (1/1) ... [2019-10-14 23:58:58,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3304fef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:58:58, skipping insertion in model container [2019-10-14 23:58:58,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:58:58" (1/1) ... [2019-10-14 23:58:58,975 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:58:59,064 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:58:59,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:58:59,837 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:59:00,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:00,192 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:59:00,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00 WrapperNode [2019-10-14 23:59:00,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:00,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:59:00,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:59:00,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:59:00,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (1/1) ... [2019-10-14 23:59:00,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (1/1) ... [2019-10-14 23:59:00,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (1/1) ... [2019-10-14 23:59:00,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (1/1) ... [2019-10-14 23:59:00,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (1/1) ... [2019-10-14 23:59:00,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (1/1) ... [2019-10-14 23:59:00,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (1/1) ... [2019-10-14 23:59:00,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:59:00,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:59:00,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:59:00,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:59:00,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (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 23:59:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:59:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:59:00,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:59:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:59:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:59:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:59:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:59:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:59:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:59:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:59:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:59:02,496 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:59:02,496 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:59:02,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:02 BoogieIcfgContainer [2019-10-14 23:59:02,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:59:02,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:59:02,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:59:02,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:59:02,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:58:58" (1/3) ... [2019-10-14 23:59:02,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49df3185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:02, skipping insertion in model container [2019-10-14 23:59:02,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:00" (2/3) ... [2019-10-14 23:59:02,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49df3185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:02, skipping insertion in model container [2019-10-14 23:59:02,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:02" (3/3) ... [2019-10-14 23:59:02,507 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label40.c [2019-10-14 23:59:02,520 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:59:02,534 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:59:02,546 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:59:02,593 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:59:02,593 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:59:02,593 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:59:02,594 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:59:02,594 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:59:02,594 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:59:02,595 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:59:02,595 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:59:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-10-14 23:59:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-14 23:59:02,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:02,665 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] [2019-10-14 23:59:02,671 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:02,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1898680923, now seen corresponding path program 1 times [2019-10-14 23:59:02,689 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:02,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096507908] [2019-10-14 23:59:02,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:02,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:02,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:03,807 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 23:59:03,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096507908] [2019-10-14 23:59:03,809 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:03,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:59:03,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214672255] [2019-10-14 23:59:03,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:59:03,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:03,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:59:03,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:59:03,836 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-10-14 23:59:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:06,137 INFO L93 Difference]: Finished difference Result 1070 states and 1920 transitions. [2019-10-14 23:59:06,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:59:06,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2019-10-14 23:59:06,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:06,181 INFO L225 Difference]: With dead ends: 1070 [2019-10-14 23:59:06,181 INFO L226 Difference]: Without dead ends: 677 [2019-10-14 23:59:06,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:59:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2019-10-14 23:59:06,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 458. [2019-10-14 23:59:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-10-14 23:59:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 752 transitions. [2019-10-14 23:59:06,281 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 752 transitions. Word has length 190 [2019-10-14 23:59:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:06,282 INFO L462 AbstractCegarLoop]: Abstraction has 458 states and 752 transitions. [2019-10-14 23:59:06,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:59:06,283 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 752 transitions. [2019-10-14 23:59:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-14 23:59:06,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:06,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:06,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:06,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1068911710, now seen corresponding path program 1 times [2019-10-14 23:59:06,289 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:06,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528570189] [2019-10-14 23:59:06,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:06,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:06,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:06,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528570189] [2019-10-14 23:59:06,556 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:06,556 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:59:06,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252057488] [2019-10-14 23:59:06,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:59:06,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:06,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:59:06,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:59:06,560 INFO L87 Difference]: Start difference. First operand 458 states and 752 transitions. Second operand 6 states. [2019-10-14 23:59:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:08,213 INFO L93 Difference]: Finished difference Result 1354 states and 2256 transitions. [2019-10-14 23:59:08,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:59:08,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2019-10-14 23:59:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:08,222 INFO L225 Difference]: With dead ends: 1354 [2019-10-14 23:59:08,223 INFO L226 Difference]: Without dead ends: 902 [2019-10-14 23:59:08,225 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 [2019-10-14 23:59:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2019-10-14 23:59:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 885. [2019-10-14 23:59:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2019-10-14 23:59:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1304 transitions. [2019-10-14 23:59:08,281 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1304 transitions. Word has length 217 [2019-10-14 23:59:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:08,282 INFO L462 AbstractCegarLoop]: Abstraction has 885 states and 1304 transitions. [2019-10-14 23:59:08,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:59:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1304 transitions. [2019-10-14 23:59:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-14 23:59:08,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:08,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:08,288 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:08,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:08,288 INFO L82 PathProgramCache]: Analyzing trace with hash 880538771, now seen corresponding path program 1 times [2019-10-14 23:59:08,288 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:08,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280350439] [2019-10-14 23:59:08,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:08,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:08,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:08,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280350439] [2019-10-14 23:59:08,652 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:08,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:59:08,653 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247220058] [2019-10-14 23:59:08,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:59:08,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:08,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:59:08,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:59:08,656 INFO L87 Difference]: Start difference. First operand 885 states and 1304 transitions. Second operand 4 states. [2019-10-14 23:59:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:10,634 INFO L93 Difference]: Finished difference Result 3250 states and 4891 transitions. [2019-10-14 23:59:10,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:59:10,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2019-10-14 23:59:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:10,651 INFO L225 Difference]: With dead ends: 3250 [2019-10-14 23:59:10,652 INFO L226 Difference]: Without dead ends: 2371 [2019-10-14 23:59:10,656 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 [2019-10-14 23:59:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2019-10-14 23:59:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2352. [2019-10-14 23:59:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2019-10-14 23:59:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3372 transitions. [2019-10-14 23:59:10,740 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3372 transitions. Word has length 235 [2019-10-14 23:59:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:10,741 INFO L462 AbstractCegarLoop]: Abstraction has 2352 states and 3372 transitions. [2019-10-14 23:59:10,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:59:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3372 transitions. [2019-10-14 23:59:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-10-14 23:59:10,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:10,755 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 23:59:10,755 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash -597819644, now seen corresponding path program 1 times [2019-10-14 23:59:10,756 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:10,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365468802] [2019-10-14 23:59:10,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:10,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:10,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:11,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365468802] [2019-10-14 23:59:11,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929290244] [2019-10-14 23:59:11,041 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 23:59:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:11,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:59:11,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:59:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:11,515 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:59:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:11,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [974631197] [2019-10-14 23:59:11,713 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 274 [2019-10-14 23:59:11,803 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:59:11,804 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)