/usr/bin/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/rangesum60.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:04:14,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:04:14,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:04:14,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:04:14,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:04:14,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:04:14,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:04:14,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:04:14,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:04:14,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:04:14,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:04:14,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:04:14,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:04:14,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:04:14,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:04:14,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:04:14,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:04:14,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:04:14,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:04:14,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:04:14,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:04:14,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:04:14,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:04:14,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:04:14,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:04:14,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:04:14,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:04:14,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:04:14,702 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 [2019-11-07 01:04:14,720 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:04:14,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:04:14,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:04:14,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:04:14,722 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:04:14,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:04:14,722 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:04:14,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:04:14,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:04:14,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:04:14,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:04:14,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:04:14,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:04:14,723 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:04:14,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:04:14,724 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:04:14,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:04:14,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:04:14,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:04:14,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:04:14,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:04:14,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:04:14,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:04:14,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:04:14,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:04:14,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:04:14,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:04:14,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:04:14,726 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 [2019-11-07 01:04:14,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:04:15,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:04:15,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:04:15,015 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:04:15,015 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:04:15,016 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum60.i [2019-11-07 01:04:15,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67623b639/86c13f85f26d4ac8899422386ae98e04/FLAGbe8e26882 [2019-11-07 01:04:15,577 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:04:15,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum60.i [2019-11-07 01:04:15,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67623b639/86c13f85f26d4ac8899422386ae98e04/FLAGbe8e26882 [2019-11-07 01:04:15,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67623b639/86c13f85f26d4ac8899422386ae98e04 [2019-11-07 01:04:15,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:04:15,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:04:15,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:04:15,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:04:15,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:04:15,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:15" (1/1) ... [2019-11-07 01:04:15,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529b5f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:15, skipping insertion in model container [2019-11-07 01:04:15,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:15" (1/1) ... [2019-11-07 01:04:16,007 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:04:16,051 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:04:16,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:04:16,453 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:04:16,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:04:16,489 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:04:16,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16 WrapperNode [2019-11-07 01:04:16,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:04:16,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:04:16,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:04:16,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:04:16,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (1/1) ... [2019-11-07 01:04:16,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (1/1) ... [2019-11-07 01:04:16,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (1/1) ... [2019-11-07 01:04:16,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (1/1) ... [2019-11-07 01:04:16,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (1/1) ... [2019-11-07 01:04:16,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (1/1) ... [2019-11-07 01:04:16,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (1/1) ... [2019-11-07 01:04:16,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:04:16,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:04:16,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:04:16,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:04:16,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (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 [2019-11-07 01:04:16,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:04:16,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:04:16,670 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2019-11-07 01:04:16,671 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2019-11-07 01:04:16,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:04:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:04:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:04:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2019-11-07 01:04:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:04:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2019-11-07 01:04:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:04:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:04:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:04:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:04:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:04:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:04:17,033 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:04:17,033 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 01:04:17,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:17 BoogieIcfgContainer [2019-11-07 01:04:17,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:04:17,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:04:17,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:04:17,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:04:17,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:04:15" (1/3) ... [2019-11-07 01:04:17,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a029d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:17, skipping insertion in model container [2019-11-07 01:04:17,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:16" (2/3) ... [2019-11-07 01:04:17,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7a029d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:17, skipping insertion in model container [2019-11-07 01:04:17,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:17" (3/3) ... [2019-11-07 01:04:17,044 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum60.i [2019-11-07 01:04:17,054 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:04:17,063 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:04:17,075 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:04:17,100 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:04:17,100 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:04:17,101 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:04:17,101 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:04:17,101 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:04:17,101 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:04:17,101 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:04:17,101 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:04:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-11-07 01:04:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-07 01:04:17,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:17,123 INFO L410 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] [2019-11-07 01:04:17,125 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:17,130 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2019-11-07 01:04:17,137 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:17,138 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593648570] [2019-11-07 01:04:17,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:17,260 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593648570] [2019-11-07 01:04:17,261 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-11-07 01:04:17,261 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89139719] [2019-11-07 01:04:17,261 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 [2019-11-07 01:04:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:17,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-07 01:04:17,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 01:04:17,386 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:04:17,433 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-07 01:04:17,433 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2019-11-07 01:04:17,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018538773] [2019-11-07 01:04:17,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 01:04:17,442 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:17,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 01:04:17,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 01:04:17,459 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-11-07 01:04:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:17,484 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2019-11-07 01:04:17,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 01:04:17,485 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-11-07 01:04:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:17,493 INFO L225 Difference]: With dead ends: 64 [2019-11-07 01:04:17,493 INFO L226 Difference]: Without dead ends: 32 [2019-11-07 01:04:17,498 INFO L630 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 [2019-11-07 01:04:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-07 01:04:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-07 01:04:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-07 01:04:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-07 01:04:17,538 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 37 [2019-11-07 01:04:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:17,538 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-07 01:04:17,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 01:04:17,539 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-07 01:04:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-07 01:04:17,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:17,542 INFO L410 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] [2019-11-07 01:04:17,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:17,753 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:17,753 INFO L82 PathProgramCache]: Analyzing trace with hash -991975144, now seen corresponding path program 1 times [2019-11-07 01:04:17,753 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:17,754 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474782936] [2019-11-07 01:04:17,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:17,774 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 01:04:17,775 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012371492] [2019-11-07 01:04:17,775 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 [2019-11-07 01:04:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:17,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 01:04:17,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 01:04:17,911 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 01:04:17,954 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474782936] [2019-11-07 01:04:17,955 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 01:04:17,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012371492] [2019-11-07 01:04:17,955 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:04:17,956 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-07 01:04:17,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381603835] [2019-11-07 01:04:17,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:04:17,957 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:17,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:04:17,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:04:17,958 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 4 states. [2019-11-07 01:04:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:17,999 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2019-11-07 01:04:17,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:04:17,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-11-07 01:04:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:18,002 INFO L225 Difference]: With dead ends: 57 [2019-11-07 01:04:18,003 INFO L226 Difference]: Without dead ends: 35 [2019-11-07 01:04:18,004 INFO L630 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 [2019-11-07 01:04:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-07 01:04:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-07 01:04:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-07 01:04:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-11-07 01:04:18,013 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 37 [2019-11-07 01:04:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:18,013 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-11-07 01:04:18,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:04:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-11-07 01:04:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-07 01:04:18,015 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:18,015 INFO L410 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] [2019-11-07 01:04:18,224 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:18,226 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:18,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:18,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1046511764, now seen corresponding path program 1 times [2019-11-07 01:04:18,228 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:18,228 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125173542] [2019-11-07 01:04:18,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:18,253 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 01:04:18,254 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103513908] [2019-11-07 01:04:18,254 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 [2019-11-07 01:04:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:18,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:04:18,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 01:04:18,388 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 01:04:18,415 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125173542] [2019-11-07 01:04:18,415 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 01:04:18,416 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103513908] [2019-11-07 01:04:18,416 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-07 01:04:18,416 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2019-11-07 01:04:18,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392876775] [2019-11-07 01:04:18,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:04:18,417 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:18,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:04:18,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:04:18,418 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-11-07 01:04:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:18,435 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2019-11-07 01:04:18,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:04:18,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-11-07 01:04:18,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:18,439 INFO L225 Difference]: With dead ends: 59 [2019-11-07 01:04:18,439 INFO L226 Difference]: Without dead ends: 41 [2019-11-07 01:04:18,440 INFO L630 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 [2019-11-07 01:04:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-07 01:04:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-11-07 01:04:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-07 01:04:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2019-11-07 01:04:18,450 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 41 [2019-11-07 01:04:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:18,450 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2019-11-07 01:04:18,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:04:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2019-11-07 01:04:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-07 01:04:18,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:18,452 INFO L410 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] [2019-11-07 01:04:18,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:18,664 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:18,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:18,664 INFO L82 PathProgramCache]: Analyzing trace with hash 544636435, now seen corresponding path program 1 times [2019-11-07 01:04:18,664 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:18,664 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170538646] [2019-11-07 01:04:18,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 01:04:18,733 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170538646] [2019-11-07 01:04:18,733 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283539777] [2019-11-07 01:04:18,733 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 [2019-11-07 01:04:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:18,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 01:04:18,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 01:04:18,823 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 01:04:18,863 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:04:18,864 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-11-07 01:04:18,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270809459] [2019-11-07 01:04:18,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:04:18,865 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:04:18,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:04:18,866 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 3 states. [2019-11-07 01:04:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:18,885 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2019-11-07 01:04:18,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:04:18,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-11-07 01:04:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:18,888 INFO L225 Difference]: With dead ends: 64 [2019-11-07 01:04:18,888 INFO L226 Difference]: Without dead ends: 42 [2019-11-07 01:04:18,889 INFO L630 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 [2019-11-07 01:04:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-07 01:04:18,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-11-07 01:04:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-07 01:04:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2019-11-07 01:04:18,896 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 41 [2019-11-07 01:04:18,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:18,896 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2019-11-07 01:04:18,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:04:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2019-11-07 01:04:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-07 01:04:18,898 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:18,898 INFO L410 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] [2019-11-07 01:04:19,102 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:19,102 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:19,103 INFO L82 PathProgramCache]: Analyzing trace with hash -577477851, now seen corresponding path program 1 times [2019-11-07 01:04:19,104 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:19,104 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590408378] [2019-11-07 01:04:19,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 01:04:19,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590408378] [2019-11-07 01:04:19,182 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923604180] [2019-11-07 01:04:19,182 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 [2019-11-07 01:04:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:19,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 01:04:19,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-07 01:04:19,259 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 01:04:19,293 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 01:04:19,293 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-11-07 01:04:19,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276871429] [2019-11-07 01:04:19,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:04:19,294 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:19,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:04:19,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:04:19,295 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2019-11-07 01:04:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:19,316 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2019-11-07 01:04:19,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:04:19,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2019-11-07 01:04:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:19,318 INFO L225 Difference]: With dead ends: 63 [2019-11-07 01:04:19,318 INFO L226 Difference]: Without dead ends: 44 [2019-11-07 01:04:19,319 INFO L630 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 [2019-11-07 01:04:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-07 01:04:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-07 01:04:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-07 01:04:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2019-11-07 01:04:19,326 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 50 [2019-11-07 01:04:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:19,326 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2019-11-07 01:04:19,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:04:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2019-11-07 01:04:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-07 01:04:19,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:19,328 INFO L410 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] [2019-11-07 01:04:19,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:19,532 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:19,533 INFO L82 PathProgramCache]: Analyzing trace with hash -478301719, now seen corresponding path program 1 times [2019-11-07 01:04:19,534 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:19,534 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292971420] [2019-11-07 01:04:19,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 01:04:19,581 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292971420] [2019-11-07 01:04:19,582 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57438217] [2019-11-07 01:04:19,582 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 [2019-11-07 01:04:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:19,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:04:19,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 01:04:19,688 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 01:04:19,766 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [95077042] [2019-11-07 01:04:19,773 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 55 [2019-11-07 01:04:19,821 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 01:04:19,822 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 01:04:19,930 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 01:04:19,932 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. [2019-11-07 01:04:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:19,937 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 01:04:20,019 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-07 01:04:20,020 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 01:04:20,025 INFO L553 sIntCurrentIteration]: We unified 53 AI predicates to 53 [2019-11-07 01:04:20,025 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 01:04:20,026 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 01:04:20,026 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 5, 5] total 10 [2019-11-07 01:04:20,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669442800] [2019-11-07 01:04:20,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 01:04:20,028 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:04:20,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-07 01:04:20,029 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 2 states. [2019-11-07 01:04:20,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:20,040 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-11-07 01:04:20,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 01:04:20,040 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 54 [2019-11-07 01:04:20,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:20,040 INFO L225 Difference]: With dead ends: 44 [2019-11-07 01:04:20,041 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 01:04:20,046 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-07 01:04:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 01:04:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 01:04:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 01:04:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 01:04:20,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2019-11-07 01:04:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:20,047 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 01:04:20,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 01:04:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 01:04:20,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 01:04:20,253 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:20,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 01:04:20,341 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 01:04:20,341 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 01:04:20,341 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 01:04:20,341 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 01:04:20,342 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 01:04:20,342 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 01:04:20,342 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 01:04:20,342 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 29 53) no Hoare annotation was computed. [2019-11-07 01:04:20,342 INFO L443 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-07 01:04:20,342 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 29 53) no Hoare annotation was computed. [2019-11-07 01:04:20,342 INFO L439 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: false [2019-11-07 01:04:20,342 INFO L443 ceAbstractionStarter]: For program point L38-1(line 38) no Hoare annotation was computed. [2019-11-07 01:04:20,342 INFO L439 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: false [2019-11-07 01:04:20,343 INFO L443 ceAbstractionStarter]: For program point L32-1(line 32) no Hoare annotation was computed. [2019-11-07 01:04:20,343 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 29 53) the Hoare annotation is: true [2019-11-07 01:04:20,343 INFO L443 ceAbstractionStarter]: For program point L49(lines 49 51) no Hoare annotation was computed. [2019-11-07 01:04:20,343 INFO L439 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: false [2019-11-07 01:04:20,343 INFO L443 ceAbstractionStarter]: For program point L49-2(lines 49 51) no Hoare annotation was computed. [2019-11-07 01:04:20,343 INFO L443 ceAbstractionStarter]: For program point L47-1(line 47) no Hoare annotation was computed. [2019-11-07 01:04:20,343 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: false [2019-11-07 01:04:20,343 INFO L443 ceAbstractionStarter]: For program point L43-2(lines 43 45) no Hoare annotation was computed. [2019-11-07 01:04:20,343 INFO L443 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2019-11-07 01:04:20,344 INFO L439 ceAbstractionStarter]: At program point L43-3(lines 43 45) the Hoare annotation is: false [2019-11-07 01:04:20,344 INFO L443 ceAbstractionStarter]: For program point L43-4(lines 43 45) no Hoare annotation was computed. [2019-11-07 01:04:20,344 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2019-11-07 01:04:20,344 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 21) no Hoare annotation was computed. [2019-11-07 01:04:20,344 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 22) no Hoare annotation was computed. [2019-11-07 01:04:20,344 INFO L446 ceAbstractionStarter]: At program point L17-3(lines 17 22) the Hoare annotation is: true [2019-11-07 01:04:20,344 INFO L443 ceAbstractionStarter]: For program point rangesumEXIT(lines 11 27) no Hoare annotation was computed. [2019-11-07 01:04:20,344 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 12 27) no Hoare annotation was computed. [2019-11-07 01:04:20,345 INFO L446 ceAbstractionStarter]: At program point rangesumENTRY(lines 11 27) the Hoare annotation is: true [2019-11-07 01:04:20,345 INFO L443 ceAbstractionStarter]: For program point rangesumFINAL(lines 11 27) no Hoare annotation was computed. [2019-11-07 01:04:20,345 INFO L443 ceAbstractionStarter]: For program point init_nondetEXIT(lines 4 9) no Hoare annotation was computed. [2019-11-07 01:04:20,345 INFO L446 ceAbstractionStarter]: At program point init_nondetENTRY(lines 4 9) the Hoare annotation is: true [2019-11-07 01:04:20,345 INFO L443 ceAbstractionStarter]: For program point L6-2(lines 6 8) no Hoare annotation was computed. [2019-11-07 01:04:20,345 INFO L446 ceAbstractionStarter]: At program point L6-3(lines 6 8) the Hoare annotation is: true [2019-11-07 01:04:20,345 INFO L443 ceAbstractionStarter]: For program point L6-4(lines 4 9) no Hoare annotation was computed. [2019-11-07 01:04:20,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:04:20 BoogieIcfgContainer [2019-11-07 01:04:20,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 01:04:20,360 INFO L168 Benchmark]: Toolchain (without parser) took 4384.48 ms. Allocated memory was 137.9 MB in the beginning and 248.0 MB in the end (delta: 110.1 MB). Free memory was 102.5 MB in the beginning and 203.9 MB in the end (delta: -101.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:20,360 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 01:04:20,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.69 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 91.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:20,362 INFO L168 Benchmark]: Boogie Preprocessor took 127.63 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 177.4 MB in the end (delta: -85.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:20,363 INFO L168 Benchmark]: RCFGBuilder took 413.96 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 160.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:20,364 INFO L168 Benchmark]: TraceAbstraction took 3317.51 ms. Allocated memory was 200.3 MB in the beginning and 248.0 MB in the end (delta: 47.7 MB). Free memory was 160.3 MB in the beginning and 203.9 MB in the end (delta: -43.6 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:20,368 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 515.69 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 91.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.63 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 177.4 MB in the end (delta: -85.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.96 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 160.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3317.51 ms. Allocated memory was 200.3 MB in the beginning and 248.0 MB in the end (delta: 47.7 MB). Free memory was 160.3 MB in the beginning and 203.9 MB in the end (delta: -43.6 MB). Peak memory consumption was 4.1 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, 525 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 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, 0.6s 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]: 164, 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...