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/loops/linear_sea.ch.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:07:02,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:07:02,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:07:02,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:07:02,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:07:02,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:07:02,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:07:03,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:07:03,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:07:03,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:07:03,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:07:03,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:07:03,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:07:03,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:07:03,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:07:03,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:07:03,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:07:03,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:07:03,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:07:03,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:07:03,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:07:03,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:07:03,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:07:03,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:07:03,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:07:03,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:07:03,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:07:03,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:07:03,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:07:03,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:07:03,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:07:03,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:07:03,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:07:03,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:07:03,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:07:03,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:07:03,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:07:03,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:07:03,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:07:03,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:07:03,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:07:03,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:07:03,077 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:07:03,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:07:03,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:07:03,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:07:03,082 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:07:03,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:07:03,083 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:07:03,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:07:03,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:07:03,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:07:03,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:07:03,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:07:03,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:07:03,086 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:07:03,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:07:03,086 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:07:03,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:07:03,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:07:03,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:07:03,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:07:03,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:07:03,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:07:03,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:07:03,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:07:03,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:07:03,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:07:03,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:07:03,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:07:03,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:07:03,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:07:03,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:07:03,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:07:03,391 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:07:03,391 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:07:03,392 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_sea.ch.c [2019-10-13 21:07:03,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d04e5a7/5fed0f857ece448197969fa4707455cb/FLAG4097d1863 [2019-10-13 21:07:03,918 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:07:03,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch.c [2019-10-13 21:07:03,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d04e5a7/5fed0f857ece448197969fa4707455cb/FLAG4097d1863 [2019-10-13 21:07:04,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d04e5a7/5fed0f857ece448197969fa4707455cb [2019-10-13 21:07:04,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:07:04,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:07:04,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:07:04,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:07:04,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:07:04,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62527510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04, skipping insertion in model container [2019-10-13 21:07:04,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,333 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:07:04,352 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:07:04,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:07:04,553 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:07:04,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:07:04,585 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:07:04,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04 WrapperNode [2019-10-13 21:07:04,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:07:04,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:07:04,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:07:04,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:07:04,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (1/1) ... [2019-10-13 21:07:04,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:07:04,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:07:04,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:07:04,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:07:04,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:07:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:07:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:07:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:07:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure linear_search [2019-10-13 21:07:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:07:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:07:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:07:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:07:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 21:07:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure linear_search [2019-10-13 21:07:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:07:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:07:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:07:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:07:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:07:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:07:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:07:05,004 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:07:05,004 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:07:05,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:07:05 BoogieIcfgContainer [2019-10-13 21:07:05,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:07:05,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:07:05,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:07:05,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:07:05,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:07:04" (1/3) ... [2019-10-13 21:07:05,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ff25d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:07:05, skipping insertion in model container [2019-10-13 21:07:05,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:07:04" (2/3) ... [2019-10-13 21:07:05,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ff25d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:07:05, skipping insertion in model container [2019-10-13 21:07:05,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:07:05" (3/3) ... [2019-10-13 21:07:05,016 INFO L109 eAbstractionObserver]: Analyzing ICFG linear_sea.ch.c [2019-10-13 21:07:05,026 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:07:05,050 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:07:05,062 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:07:05,088 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:07:05,088 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:07:05,089 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:07:05,089 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:07:05,089 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:07:05,089 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:07:05,089 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:07:05,089 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:07:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-13 21:07:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:07:05,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:07:05,109 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:07:05,111 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:07:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:05,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1860043698, now seen corresponding path program 1 times [2019-10-13 21:07:05,122 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:07:05,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291146409] [2019-10-13 21:07:05,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:05,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:05,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:07:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:07:05,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291146409] [2019-10-13 21:07:05,290 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:07:05,290 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:07:05,290 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938708101] [2019-10-13 21:07:05,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:07:05,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:07:05,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:07:05,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:07:05,314 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-13 21:07:05,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:07:05,337 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2019-10-13 21:07:05,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:07:05,339 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-13 21:07:05,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:07:05,347 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:07:05,348 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:07:05,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:07:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:07:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 21:07:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:07:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-13 21:07:05,386 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2019-10-13 21:07:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:07:05,387 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-13 21:07:05,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:07:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-13 21:07:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:07:05,388 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:07:05,389 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] [2019-10-13 21:07:05,389 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:07:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:05,390 INFO L82 PathProgramCache]: Analyzing trace with hash 916881159, now seen corresponding path program 1 times [2019-10-13 21:07:05,390 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:07:05,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668510514] [2019-10-13 21:07:05,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:05,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:05,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:07:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:07:05,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668510514] [2019-10-13 21:07:05,578 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:07:05,578 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:07:05,578 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869281580] [2019-10-13 21:07:05,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:07:05,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:07:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:07:05,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:07:05,581 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2019-10-13 21:07:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:07:05,627 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-10-13 21:07:05,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:07:05,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-10-13 21:07:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:07:05,629 INFO L225 Difference]: With dead ends: 29 [2019-10-13 21:07:05,629 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:07:05,630 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:07:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:07:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 21:07:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:07:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-13 21:07:05,636 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 20 [2019-10-13 21:07:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:07:05,636 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-13 21:07:05,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:07:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-13 21:07:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:07:05,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:07:05,638 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] [2019-10-13 21:07:05,638 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:07:05,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:05,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1635275802, now seen corresponding path program 1 times [2019-10-13 21:07:05,639 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:07:05,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135133003] [2019-10-13 21:07:05,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:05,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:05,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:07:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:07:05,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135133003] [2019-10-13 21:07:05,819 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:07:05,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:07:05,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169431071] [2019-10-13 21:07:05,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:07:05,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:07:05,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:07:05,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:07:05,822 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-10-13 21:07:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:07:05,906 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-10-13 21:07:05,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:07:05,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-13 21:07:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:07:05,910 INFO L225 Difference]: With dead ends: 33 [2019-10-13 21:07:05,910 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 21:07:05,911 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:07:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 21:07:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-13 21:07:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 21:07:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-13 21:07:05,923 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2019-10-13 21:07:05,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:07:05,924 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-13 21:07:05,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:07:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-13 21:07:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 21:07:05,926 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:07:05,927 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:07:05,927 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:07:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:05,928 INFO L82 PathProgramCache]: Analyzing trace with hash 636491705, now seen corresponding path program 1 times [2019-10-13 21:07:05,928 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:07:05,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986142410] [2019-10-13 21:07:05,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:05,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:07:05,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:07:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:07:06,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986142410] [2019-10-13 21:07:06,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785353104] [2019-10-13 21:07:06,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:07:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:07:06,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:07:06,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:07:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:07:06,330 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:07:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:07:06,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1630183922] [2019-10-13 21:07:06,478 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 24 [2019-10-13 21:07:06,542 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:07:06,542 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:07:06,643 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-13 21:07:06,665 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:07:06,667 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 23 root evaluator evaluations with a maximum evaluation depth of 9. Performed 23 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Never found a fixpoint. Largest state had 22 variables. [2019-10-13 21:07:06,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:07:06,671 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:07:06,716 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-13 21:07:06,716 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:07:06,725 INFO L553 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-13 21:07:06,726 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:07:06,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:07:06,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5, 6] total 12 [2019-10-13 21:07:06,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789891677] [2019-10-13 21:07:06,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:07:06,728 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:07:06,729 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:07:06,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:07:06,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:07:06,729 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2019-10-13 21:07:06,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:07:06,750 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-10-13 21:07:06,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:07:06,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-10-13 21:07:06,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:07:06,751 INFO L225 Difference]: With dead ends: 24 [2019-10-13 21:07:06,751 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:07:06,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:07:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:07:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:07:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:07:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:07:06,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-13 21:07:06,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:07:06,754 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:07:06,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:07:06,754 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:07:06,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:07:06,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:07:06,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:07:07,026 INFO L446 ceAbstractionStarter]: At program point linear_searchENTRY(lines 13 20) the Hoare annotation is: true [2019-10-13 21:07:07,026 INFO L443 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-10-13 21:07:07,026 INFO L443 ceAbstractionStarter]: For program point linear_searchEXIT(lines 13 20) no Hoare annotation was computed. [2019-10-13 21:07:07,027 INFO L443 ceAbstractionStarter]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2019-10-13 21:07:07,027 INFO L446 ceAbstractionStarter]: At program point L15-5(lines 15 17) the Hoare annotation is: true [2019-10-13 21:07:07,027 INFO L443 ceAbstractionStarter]: For program point L15-6(lines 13 20) no Hoare annotation was computed. [2019-10-13 21:07:07,027 INFO L443 ceAbstractionStarter]: For program point linear_searchFINAL(lines 13 20) no Hoare annotation was computed. [2019-10-13 21:07:07,028 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:07:07,028 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:07:07,028 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:07:07,028 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:07:07,029 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~MAX~0 100000) (<= ~SIZE~0 (* 4294967296 (div ~SIZE~0 4294967296)))) [2019-10-13 21:07:07,029 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:07:07,029 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:07:07,029 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 21 29) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| (* 4294967296 (div |old(~SIZE~0)| 4294967296)))) (<= ~SIZE~0 (* 4294967296 (div ~SIZE~0 4294967296))) (not (= 100000 ~MAX~0))) [2019-10-13 21:07:07,029 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| (* 4294967296 (div |old(~SIZE~0)| 4294967296)))) (not (= 100000 ~MAX~0))) [2019-10-13 21:07:07,029 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-10-13 21:07:07,030 INFO L439 ceAbstractionStarter]: At program point L27-2(line 27) the Hoare annotation is: (or (not (<= |old(~SIZE~0)| (* 4294967296 (div |old(~SIZE~0)| 4294967296)))) (not (= 100000 ~MAX~0)) (= 1 |main_#t~ret5|)) [2019-10-13 21:07:07,030 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 21 29) no Hoare annotation was computed. [2019-10-13 21:07:07,030 INFO L443 ceAbstractionStarter]: For program point L24(lines 24 28) no Hoare annotation was computed. [2019-10-13 21:07:07,030 INFO L443 ceAbstractionStarter]: For program point L27-3(line 27) no Hoare annotation was computed. [2019-10-13 21:07:07,030 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 21 29) no Hoare annotation was computed. [2019-10-13 21:07:07,030 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-10-13 21:07:07,031 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-13 21:07:07,031 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-13 21:07:07,032 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-13 21:07:07,032 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-13 21:07:07,032 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-10-13 21:07:07,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:07:07 BoogieIcfgContainer [2019-10-13 21:07:07,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:07:07,047 INFO L168 Benchmark]: Toolchain (without parser) took 2727.53 ms. Allocated memory was 144.2 MB in the beginning and 233.8 MB in the end (delta: 89.7 MB). Free memory was 102.5 MB in the beginning and 168.3 MB in the end (delta: -65.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:07,050 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 21:07:07,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.03 ms. Allocated memory is still 144.2 MB. Free memory was 102.3 MB in the beginning and 92.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:07,053 INFO L168 Benchmark]: Boogie Preprocessor took 112.07 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.3 MB in the beginning and 179.4 MB in the end (delta: -87.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:07,060 INFO L168 Benchmark]: RCFGBuilder took 307.95 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 163.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:07,061 INFO L168 Benchmark]: TraceAbstraction took 2035.76 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 162.9 MB in the beginning and 168.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:07:07,073 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.03 ms. Allocated memory is still 144.2 MB. Free memory was 102.3 MB in the beginning and 92.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.07 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.3 MB in the beginning and 179.4 MB in the end (delta: -87.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.95 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 163.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2035.76 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 162.9 MB in the beginning and 168.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 25 SDslu, 110 SDs, 0 SdLazy, 35 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 65 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 10087 SizeOfPredicates, 2 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 194, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9715909090909091, AVG_VARS_REMOVED_DURING_WEAKENING: 1.3181818181818181, AVG_WEAKENED_CONJUNCTS: 1.0, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...