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/reducercommutativity/rangesum40.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:23:20,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:23:20,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:23:20,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:23:20,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:23:20,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:23:20,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:23:20,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:23:20,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:23:20,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:23:20,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:23:20,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:23:20,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:23:20,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:23:20,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:23:20,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:23:20,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:23:20,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:23:20,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:23:20,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:23:20,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:23:20,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:23:20,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:23:20,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:23:20,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:23:20,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:23:20,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:23:20,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:23:20,738 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 21:23:20,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:23:20,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:23:20,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:23:20,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:23:20,770 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:23:20,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:23:20,770 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:23:20,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:23:20,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:23:20,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:23:20,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:23:20,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:23:20,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:23:20,773 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:23:20,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:23:20,773 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:23:20,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:23:20,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:23:20,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:23:20,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:23:20,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:23:20,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:23:20,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:23:20,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:23:20,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:23:20,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:23:20,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:23:20,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:23:20,776 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 21:23:21,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:23:21,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:23:21,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:23:21,120 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:23:21,120 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:23:21,121 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum40.i [2019-10-13 21:23:21,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cd98fd9/c638e349f7ef43bcb17fc47d20f1a968/FLAGb1ac3b28c [2019-10-13 21:23:21,669 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:23:21,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum40.i [2019-10-13 21:23:21,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cd98fd9/c638e349f7ef43bcb17fc47d20f1a968/FLAGb1ac3b28c [2019-10-13 21:23:22,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cd98fd9/c638e349f7ef43bcb17fc47d20f1a968 [2019-10-13 21:23:22,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:23:22,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:23:22,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:23:22,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:23:22,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:23:22,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20022b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22, skipping insertion in model container [2019-10-13 21:23:22,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,100 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:23:22,116 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:23:22,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:23:22,309 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:23:22,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:23:22,450 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:23:22,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22 WrapperNode [2019-10-13 21:23:22,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:23:22,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:23:22,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:23:22,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:23:22,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (1/1) ... [2019-10-13 21:23:22,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:23:22,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:23:22,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:23:22,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:23:22,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (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 21:23:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:23:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:23:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2019-10-13 21:23:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2019-10-13 21:23:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:23:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:23:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:23:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2019-10-13 21:23:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:23:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2019-10-13 21:23:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:23:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:23:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:23:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:23:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:23:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:23:22,929 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:23:22,929 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:23:22,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:22 BoogieIcfgContainer [2019-10-13 21:23:22,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:23:22,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:23:22,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:23:22,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:23:22,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:23:22" (1/3) ... [2019-10-13 21:23:22,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3163df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:22, skipping insertion in model container [2019-10-13 21:23:22,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:22" (2/3) ... [2019-10-13 21:23:22,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3163df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:22, skipping insertion in model container [2019-10-13 21:23:22,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:22" (3/3) ... [2019-10-13 21:23:22,947 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2019-10-13 21:23:22,954 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:23:22,960 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:23:22,969 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:23:22,991 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:23:22,991 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:23:22,992 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:23:22,992 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:23:22,992 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:23:22,992 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:23:22,992 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:23:22,993 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:23:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-13 21:23:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-13 21:23:23,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:23,017 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:23:23,019 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:23,024 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2019-10-13 21:23:23,030 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:23,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903362100] [2019-10-13 21:23:23,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:23,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:23,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:23,162 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903362100] [2019-10-13 21:23:23,163 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-13 21:23:23,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714720788] [2019-10-13 21:23:23,163 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 21:23:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:23,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 21:23:23,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:23:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 21:23:23,294 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:23:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 21:23:23,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:23:23,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2019-10-13 21:23:23,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319702659] [2019-10-13 21:23:23,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:23:23,375 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:23,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:23:23,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:23:23,393 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-10-13 21:23:23,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:23:23,419 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2019-10-13 21:23:23,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:23:23,420 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-10-13 21:23:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:23:23,430 INFO L225 Difference]: With dead ends: 64 [2019-10-13 21:23:23,430 INFO L226 Difference]: Without dead ends: 32 [2019-10-13 21:23:23,434 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 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 21:23:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-13 21:23:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-10-13 21:23:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-13 21:23:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-10-13 21:23:23,474 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 37 [2019-10-13 21:23:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:23:23,474 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-10-13 21:23:23,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:23:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-10-13 21:23:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-13 21:23:23,477 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:23,478 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:23:23,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:23,683 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:23,684 INFO L82 PathProgramCache]: Analyzing trace with hash -991975144, now seen corresponding path program 1 times [2019-10-13 21:23:23,685 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:23,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925393508] [2019-10-13 21:23:23,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:23,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:23,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:23,708 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:23:23,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31145437] [2019-10-13 21:23:23,709 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 [2019-10-13 21:23:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:23,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:23:23,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:23:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:23:23,842 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:23:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:23:23,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925393508] [2019-10-13 21:23:23,912 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:23:23,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31145437] [2019-10-13 21:23:23,912 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:23:23,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 21:23:23,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705806481] [2019-10-13 21:23:23,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:23:23,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:23,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:23:23,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:23:23,915 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 4 states. [2019-10-13 21:23:23,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:23:23,942 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2019-10-13 21:23:23,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:23:23,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-10-13 21:23:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:23:23,945 INFO L225 Difference]: With dead ends: 57 [2019-10-13 21:23:23,945 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 21:23:23,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 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 21:23:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 21:23:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-13 21:23:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-13 21:23:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-10-13 21:23:23,955 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 37 [2019-10-13 21:23:23,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:23:23,955 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-10-13 21:23:23,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:23:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-10-13 21:23:23,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-13 21:23:23,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:23,957 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:23:24,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:24,163 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:24,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1046511764, now seen corresponding path program 1 times [2019-10-13 21:23:24,164 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:24,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000331471] [2019-10-13 21:23:24,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:24,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:24,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:24,186 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 21:23:24,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933915508] [2019-10-13 21:23:24,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:24,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:23:24,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:23:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:23:24,285 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:23:24,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 21:23:24,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000331471] [2019-10-13 21:23:24,316 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 21:23:24,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933915508] [2019-10-13 21:23:24,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:23:24,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2019-10-13 21:23:24,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258532682] [2019-10-13 21:23:24,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:23:24,318 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:23:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:23:24,318 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-10-13 21:23:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:23:24,335 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2019-10-13 21:23:24,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:23:24,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-10-13 21:23:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:23:24,339 INFO L225 Difference]: With dead ends: 59 [2019-10-13 21:23:24,339 INFO L226 Difference]: Without dead ends: 41 [2019-10-13 21:23:24,339 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:23:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-13 21:23:24,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-10-13 21:23:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-13 21:23:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2019-10-13 21:23:24,350 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 41 [2019-10-13 21:23:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:23:24,350 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2019-10-13 21:23:24,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:23:24,350 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2019-10-13 21:23:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-13 21:23:24,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:24,352 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:23:24,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:24,556 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:24,557 INFO L82 PathProgramCache]: Analyzing trace with hash 544636435, now seen corresponding path program 1 times [2019-10-13 21:23:24,557 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:24,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935240391] [2019-10-13 21:23:24,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:24,558 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:24,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 21:23:24,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935240391] [2019-10-13 21:23:24,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425256835] [2019-10-13 21:23:24,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:24,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:23:24,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:23:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:23:24,718 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:23:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 21:23:24,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:23:24,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 21:23:24,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701607128] [2019-10-13 21:23:24,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:23:24,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:24,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:23:24,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:23:24,760 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 3 states. [2019-10-13 21:23:24,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:23:24,787 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2019-10-13 21:23:24,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:23:24,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-10-13 21:23:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:23:24,791 INFO L225 Difference]: With dead ends: 64 [2019-10-13 21:23:24,791 INFO L226 Difference]: Without dead ends: 42 [2019-10-13 21:23:24,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:23:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-13 21:23:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-10-13 21:23:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-13 21:23:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2019-10-13 21:23:24,807 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 41 [2019-10-13 21:23:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:23:24,807 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2019-10-13 21:23:24,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:23:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2019-10-13 21:23:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-13 21:23:24,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:24,811 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:23:25,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:25,025 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:25,025 INFO L82 PathProgramCache]: Analyzing trace with hash -577477851, now seen corresponding path program 1 times [2019-10-13 21:23:25,025 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:25,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355981579] [2019-10-13 21:23:25,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:25,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:25,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:23:25,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355981579] [2019-10-13 21:23:25,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463900512] [2019-10-13 21:23:25,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:25,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:23:25,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:23:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 21:23:25,190 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:23:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:23:25,225 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:23:25,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-13 21:23:25,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679748607] [2019-10-13 21:23:25,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:23:25,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:23:25,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:23:25,227 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2019-10-13 21:23:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:23:25,252 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2019-10-13 21:23:25,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:23:25,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2019-10-13 21:23:25,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:23:25,254 INFO L225 Difference]: With dead ends: 63 [2019-10-13 21:23:25,254 INFO L226 Difference]: Without dead ends: 44 [2019-10-13 21:23:25,255 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:23:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-13 21:23:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-10-13 21:23:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-13 21:23:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2019-10-13 21:23:25,269 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 50 [2019-10-13 21:23:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:23:25,269 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2019-10-13 21:23:25,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:23:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2019-10-13 21:23:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-13 21:23:25,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:25,272 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:23:25,472 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:25,474 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:25,475 INFO L82 PathProgramCache]: Analyzing trace with hash -478301719, now seen corresponding path program 1 times [2019-10-13 21:23:25,475 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:25,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821215695] [2019-10-13 21:23:25,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:25,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:25,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:23:25,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821215695] [2019-10-13 21:23:25,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248280529] [2019-10-13 21:23:25,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:25,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:23:25,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:23:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:23:25,644 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:23:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:23:25,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [52965765] [2019-10-13 21:23:25,708 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 55 [2019-10-13 21:23:25,758 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:23:25,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:23:25,833 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:23:25,834 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 27 variables. [2019-10-13 21:23:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:25,839 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:23:25,958 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 21:23:25,958 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:23:25,962 INFO L553 sIntCurrentIteration]: We unified 53 AI predicates to 53 [2019-10-13 21:23:25,963 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:23:25,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:23:25,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 5, 5] total 10 [2019-10-13 21:23:25,964 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063437494] [2019-10-13 21:23:25,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:23:25,966 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:25,966 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:23:25,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:23:25,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:23:25,966 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 2 states. [2019-10-13 21:23:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:23:25,977 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-10-13 21:23:25,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:23:25,978 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 54 [2019-10-13 21:23:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:23:25,978 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:23:25,978 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:23:25,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 53 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 21:23:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:23:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:23:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:23:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:23:25,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2019-10-13 21:23:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:23:25,984 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:23:25,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:23:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:23:25,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:23:26,185 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:23:26,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:23:26,241 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:23:26,242 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:23:26,242 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:23:26,242 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:23:26,242 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:23:26,242 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:23:26,242 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:23:26,243 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 29 53) no Hoare annotation was computed. [2019-10-13 21:23:26,243 INFO L443 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-10-13 21:23:26,243 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2019-10-13 21:23:26,243 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 29 53) no Hoare annotation was computed. [2019-10-13 21:23:26,243 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: false [2019-10-13 21:23:26,243 INFO L443 ceAbstractionStarter]: For program point L38-1(line 38) no Hoare annotation was computed. [2019-10-13 21:23:26,244 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: false [2019-10-13 21:23:26,244 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-10-13 21:23:26,244 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 29 53) the Hoare annotation is: true [2019-10-13 21:23:26,244 INFO L443 ceAbstractionStarter]: For program point L49(lines 49 51) no Hoare annotation was computed. [2019-10-13 21:23:26,244 INFO L439 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: false [2019-10-13 21:23:26,244 INFO L443 ceAbstractionStarter]: For program point L49-2(lines 49 51) no Hoare annotation was computed. [2019-10-13 21:23:26,245 INFO L443 ceAbstractionStarter]: For program point L47-1(line 47) no Hoare annotation was computed. [2019-10-13 21:23:26,245 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: false [2019-10-13 21:23:26,245 INFO L443 ceAbstractionStarter]: For program point L43-2(lines 43 45) no Hoare annotation was computed. [2019-10-13 21:23:26,245 INFO L443 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2019-10-13 21:23:26,245 INFO L439 ceAbstractionStarter]: At program point L43-3(lines 43 45) the Hoare annotation is: false [2019-10-13 21:23:26,245 INFO L443 ceAbstractionStarter]: For program point L43-4(lines 43 45) no Hoare annotation was computed. [2019-10-13 21:23:26,245 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 21) no Hoare annotation was computed. [2019-10-13 21:23:26,246 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 22) no Hoare annotation was computed. [2019-10-13 21:23:26,246 INFO L446 ceAbstractionStarter]: At program point L17-3(lines 17 22) the Hoare annotation is: true [2019-10-13 21:23:26,246 INFO L443 ceAbstractionStarter]: For program point rangesumEXIT(lines 11 27) no Hoare annotation was computed. [2019-10-13 21:23:26,246 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 12 27) no Hoare annotation was computed. [2019-10-13 21:23:26,246 INFO L446 ceAbstractionStarter]: At program point rangesumENTRY(lines 11 27) the Hoare annotation is: true [2019-10-13 21:23:26,246 INFO L443 ceAbstractionStarter]: For program point rangesumFINAL(lines 11 27) no Hoare annotation was computed. [2019-10-13 21:23:26,247 INFO L443 ceAbstractionStarter]: For program point init_nondetEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-13 21:23:26,247 INFO L446 ceAbstractionStarter]: At program point init_nondetENTRY(lines 4 9) the Hoare annotation is: true [2019-10-13 21:23:26,247 INFO L443 ceAbstractionStarter]: For program point L6-2(lines 6 8) no Hoare annotation was computed. [2019-10-13 21:23:26,247 INFO L446 ceAbstractionStarter]: At program point L6-3(lines 6 8) the Hoare annotation is: true [2019-10-13 21:23:26,247 INFO L443 ceAbstractionStarter]: For program point L6-4(lines 4 9) no Hoare annotation was computed. [2019-10-13 21:23:26,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:23:26 BoogieIcfgContainer [2019-10-13 21:23:26,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:23:26,258 INFO L168 Benchmark]: Toolchain (without parser) took 4172.11 ms. Allocated memory was 144.7 MB in the beginning and 248.0 MB in the end (delta: 103.3 MB). Free memory was 102.5 MB in the beginning and 205.4 MB in the end (delta: -102.9 MB). Peak memory consumption was 409.5 kB. Max. memory is 7.1 GB. [2019-10-13 21:23:26,259 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 21:23:26,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.43 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 179.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:23:26,260 INFO L168 Benchmark]: Boogie Preprocessor took 42.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 178.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:23:26,261 INFO L168 Benchmark]: RCFGBuilder took 436.53 ms. Allocated memory is still 201.3 MB. Free memory was 178.1 MB in the beginning and 160.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:23:26,262 INFO L168 Benchmark]: TraceAbstraction took 3323.91 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 160.0 MB in the beginning and 205.4 MB in the end (delta: -45.4 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:23:26,266 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.43 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 179.9 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 178.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.53 ms. Allocated memory is still 201.3 MB. Free memory was 178.1 MB in the beginning and 160.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3323.91 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 160.0 MB in the beginning and 205.4 MB in the end (delta: -45.4 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 192 SDtfs, 12 SDslu, 168 SDs, 0 SdLazy, 25 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 467 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 39 PreInvPairs, 39 NumberOfFragments, 13 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 650 ConstructedInterpolants, 0 QuantifiedInterpolants, 31182 SizeOfPredicates, 4 NumberOfNonLiveVariables, 947 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 327/389 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 132, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9905660377358491, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0943396226415094, AVG_WEAKENED_CONJUNCTS: 0.11320754716981132, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...