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/sum.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:22:26,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:22:26,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:22:26,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:22:26,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:22:26,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:22:26,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:22:26,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:22:26,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:22:26,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:22:26,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:22:26,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:22:26,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:22:26,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:22:26,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:22:26,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:22:26,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:22:26,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:22:26,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:22:26,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:22:26,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:22:26,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:22:26,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:22:26,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:22:26,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:22:26,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:22:26,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:22:26,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:22:26,827 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 [2019-10-15 01:22:26,862 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:22:26,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:22:26,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:22:26,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:22:26,864 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:22:26,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:22:26,865 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:22:26,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:22:26,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:22:26,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:22:26,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:22:26,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:22:26,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:22:26,866 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:22:26,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:22:26,867 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:22:26,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:22:26,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:22:26,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:22:26,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:22:26,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:22:26,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:22:26,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:22:26,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:22:26,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:22:26,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:22:26,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:22:26,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:22:26,874 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 [2019-10-15 01:22:27,149 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:22:27,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:22:27,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:22:27,169 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:22:27,169 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:22:27,170 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum.i [2019-10-15 01:22:27,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f9fe8dd/dec9746a9a87455d9bb4838e85a8009f/FLAG7e08a7c57 [2019-10-15 01:22:27,726 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:22:27,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum.i [2019-10-15 01:22:27,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f9fe8dd/dec9746a9a87455d9bb4838e85a8009f/FLAG7e08a7c57 [2019-10-15 01:22:28,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f9fe8dd/dec9746a9a87455d9bb4838e85a8009f [2019-10-15 01:22:28,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:22:28,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:22:28,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:22:28,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:22:28,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:22:28,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ae0c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28, skipping insertion in model container [2019-10-15 01:22:28,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,180 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:22:28,204 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:22:28,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:22:28,411 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:22:28,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:22:28,444 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:22:28,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28 WrapperNode [2019-10-15 01:22:28,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:22:28,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:22:28,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:22:28,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:22:28,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (1/1) ... [2019-10-15 01:22:28,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:22:28,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:22:28,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:22:28,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:22:28,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (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 [2019-10-15 01:22:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:22:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:22:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-10-15 01:22:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:22:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:22:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:22:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-10-15 01:22:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:22:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:22:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:22:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:22:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:22:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:22:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:22:28,944 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:22:28,945 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:22:28,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:22:28 BoogieIcfgContainer [2019-10-15 01:22:28,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:22:28,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:22:28,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:22:28,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:22:28,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:22:28" (1/3) ... [2019-10-15 01:22:28,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb7d55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:22:28, skipping insertion in model container [2019-10-15 01:22:28,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:28" (2/3) ... [2019-10-15 01:22:28,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb7d55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:22:28, skipping insertion in model container [2019-10-15 01:22:28,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:22:28" (3/3) ... [2019-10-15 01:22:28,954 INFO L109 eAbstractionObserver]: Analyzing ICFG sum.i [2019-10-15 01:22:28,965 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:22:28,973 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:22:28,984 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:22:29,007 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:22:29,008 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:22:29,008 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:22:29,008 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:22:29,008 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:22:29,008 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:22:29,008 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:22:29,008 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:22:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-15 01:22:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 01:22:29,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:29,032 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] [2019-10-15 01:22:29,034 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:29,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:29,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1754504496, now seen corresponding path program 1 times [2019-10-15 01:22:29,046 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:29,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566030996] [2019-10-15 01:22:29,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:29,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:29,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:22:29,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566030996] [2019-10-15 01:22:29,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402268028] [2019-10-15 01:22:29,200 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 [2019-10-15 01:22:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:29,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 01:22:29,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:22:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 01:22:29,326 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:22:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:22:29,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:22:29,381 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-15 01:22:29,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656979557] [2019-10-15 01:22:29,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:22:29,389 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:29,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:22:29,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:22:29,408 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-10-15 01:22:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:29,435 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2019-10-15 01:22:29,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:22:29,437 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-10-15 01:22:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:29,447 INFO L225 Difference]: With dead ends: 54 [2019-10-15 01:22:29,448 INFO L226 Difference]: Without dead ends: 25 [2019-10-15 01:22:29,454 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:22:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-15 01:22:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-15 01:22:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-15 01:22:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-15 01:22:29,509 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 32 [2019-10-15 01:22:29,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:29,510 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-15 01:22:29,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:22:29,510 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-15 01:22:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 01:22:29,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:29,512 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] [2019-10-15 01:22:29,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:22:29,714 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:29,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:29,716 INFO L82 PathProgramCache]: Analyzing trace with hash 614035178, now seen corresponding path program 1 times [2019-10-15 01:22:29,716 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:29,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681721772] [2019-10-15 01:22:29,717 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:29,717 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:29,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:22:29,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681721772] [2019-10-15 01:22:29,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18077607] [2019-10-15 01:22:29,886 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 [2019-10-15 01:22:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:29,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:22:29,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:22:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 01:22:30,002 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:22:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:22:30,086 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:22:30,086 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2019-10-15 01:22:30,087 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831133222] [2019-10-15 01:22:30,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:22:30,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:30,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:22:30,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:22:30,089 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2019-10-15 01:22:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:30,148 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2019-10-15 01:22:30,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:22:30,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-15 01:22:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:30,150 INFO L225 Difference]: With dead ends: 44 [2019-10-15 01:22:30,150 INFO L226 Difference]: Without dead ends: 27 [2019-10-15 01:22:30,166 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:22:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-15 01:22:30,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-10-15 01:22:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-15 01:22:30,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-15 01:22:30,178 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 32 [2019-10-15 01:22:30,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:30,182 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-15 01:22:30,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:22:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-15 01:22:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-15 01:22:30,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:30,185 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:30,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:22:30,390 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:30,390 INFO L82 PathProgramCache]: Analyzing trace with hash 435243016, now seen corresponding path program 1 times [2019-10-15 01:22:30,391 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:30,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034669069] [2019-10-15 01:22:30,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:30,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:30,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:22:30,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034669069] [2019-10-15 01:22:30,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:22:30,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:22:30,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167253319] [2019-10-15 01:22:30,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:22:30,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:30,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:22:30,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:22:30,506 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2019-10-15 01:22:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:30,560 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2019-10-15 01:22:30,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:22:30,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-10-15 01:22:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:30,562 INFO L225 Difference]: With dead ends: 41 [2019-10-15 01:22:30,562 INFO L226 Difference]: Without dead ends: 28 [2019-10-15 01:22:30,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:22:30,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-15 01:22:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-10-15 01:22:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-15 01:22:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-10-15 01:22:30,569 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 38 [2019-10-15 01:22:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:30,571 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-10-15 01:22:30,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:22:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-10-15 01:22:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-15 01:22:30,573 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:30,573 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-15 01:22:30,573 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 573397766, now seen corresponding path program 1 times [2019-10-15 01:22:30,574 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:30,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921728202] [2019-10-15 01:22:30,574 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:30,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:30,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:22:30,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921728202] [2019-10-15 01:22:30,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149656822] [2019-10-15 01:22:30,673 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 [2019-10-15 01:22:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:30,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:22:30,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:22:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:22:30,799 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:22:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:22:30,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [910837551] [2019-10-15 01:22:30,901 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 41 [2019-10-15 01:22:30,943 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:22:30,944 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:22:31,025 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:22:31,026 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 30 variables. [2019-10-15 01:22:31,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:31,030 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:22:31,073 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-15 01:22:31,073 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:22:31,079 INFO L553 sIntCurrentIteration]: We unified 39 AI predicates to 39 [2019-10-15 01:22:31,079 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:22:31,080 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:22:31,080 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 5, 6] total 11 [2019-10-15 01:22:31,080 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269649420] [2019-10-15 01:22:31,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:22:31,082 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:31,082 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:22:31,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:22:31,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:22:31,082 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2019-10-15 01:22:31,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:31,086 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-10-15 01:22:31,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:22:31,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-15 01:22:31,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:31,087 INFO L225 Difference]: With dead ends: 27 [2019-10-15 01:22:31,087 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:22:31,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:22:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:22:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:22:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:22:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:22:31,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-10-15 01:22:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:31,089 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:22:31,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:22:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:22:31,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:22:31,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:22:31,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:22:31,371 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:22:31,371 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:22:31,371 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:22:31,371 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:22:31,372 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) [2019-10-15 01:22:31,372 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:22:31,372 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:22:31,372 INFO L443 ceAbstractionStarter]: For program point sumEXIT(lines 6 15) no Hoare annotation was computed. [2019-10-15 01:22:31,372 INFO L446 ceAbstractionStarter]: At program point sumENTRY(lines 6 15) the Hoare annotation is: true [2019-10-15 01:22:31,372 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2019-10-15 01:22:31,372 INFO L446 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: true [2019-10-15 01:22:31,373 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2019-10-15 01:22:31,373 INFO L443 ceAbstractionStarter]: For program point sumFINAL(lines 6 15) no Hoare annotation was computed. [2019-10-15 01:22:31,373 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-15 01:22:31,373 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-10-15 01:22:31,373 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 43) no Hoare annotation was computed. [2019-10-15 01:22:31,374 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-10-15 01:22:31,374 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 43) no Hoare annotation was computed. [2019-10-15 01:22:31,374 INFO L443 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2019-10-15 01:22:31,374 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-15 01:22:31,374 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2019-10-15 01:22:31,374 INFO L443 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2019-10-15 01:22:31,375 INFO L439 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-15 01:22:31,375 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-10-15 01:22:31,375 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 17 43) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648))) (and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648)))) [2019-10-15 01:22:31,375 INFO L443 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2019-10-15 01:22:31,375 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-15 01:22:31,375 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed. [2019-10-15 01:22:31,376 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 41) no Hoare annotation was computed. [2019-10-15 01:22:31,376 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 41) no Hoare annotation was computed. [2019-10-15 01:22:31,376 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-10-15 01:22:31,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:22:31 BoogieIcfgContainer [2019-10-15 01:22:31,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:22:31,392 INFO L168 Benchmark]: Toolchain (without parser) took 3231.38 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 103.1 MB in the beginning and 131.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:31,393 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:22:31,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.66 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:31,395 INFO L168 Benchmark]: Boogie Preprocessor took 121.51 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 181.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:31,396 INFO L168 Benchmark]: RCFGBuilder took 379.37 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 165.4 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:31,397 INFO L168 Benchmark]: TraceAbstraction took 2441.68 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 164.7 MB in the beginning and 131.0 MB in the end (delta: 33.7 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:31,401 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.66 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.51 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 181.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 379.37 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 165.4 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2441.68 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 164.7 MB in the beginning and 131.0 MB in the end (delta: 33.7 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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: 32]: Loop Invariant Derived loop invariant: !(\old(N) <= 2147483647) || !(0 <= \old(N) + 2147483648) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 44 SDslu, 29 SDs, 0 SdLazy, 44 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 164 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 24 PreInvPairs, 24 NumberOfFragments, 77 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 340 ConstructedInterpolants, 0 QuantifiedInterpolants, 15844 SizeOfPredicates, 4 NumberOfNonLiveVariables, 418 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 150/213 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 129, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9700854700854702, AVG_VARS_REMOVED_DURING_WEAKENING: 1.3076923076923077, AVG_WEAKENED_CONJUNCTS: 0.41025641025641024, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...