java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/memsafety/20020406-1_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:23:14,569 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:23:14,597 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:23:14,612 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:23:14,613 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:23:14,614 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:23:14,615 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:23:14,617 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:23:14,619 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:23:14,620 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:23:14,620 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:23:14,621 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:23:14,622 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:23:14,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:23:14,624 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:23:14,626 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:23:14,628 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:23:14,630 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:23:14,632 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:23:14,633 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:23:14,635 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-23 14:23:14,636 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-23 14:23:14,636 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-23 14:23:14,637 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-23 14:23:14,638 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-23 14:23:14,639 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-23 14:23:14,639 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-23 14:23:14,640 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-23 14:23:14,640 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-23 14:23:14,640 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:23:14,641 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:23:14,641 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:23:14,650 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:23:14,651 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:23:14,651 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:23:14,652 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:23:14,652 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:23:14,652 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:23:14,652 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:23:14,652 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:23:14,653 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:23:14,653 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:23:14,653 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:23:14,653 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:23:14,653 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:23:14,653 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:23:14,653 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:23:14,653 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:23:14,654 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:23:14,654 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:23:14,654 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:23:14,654 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:23:14,654 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:23:14,654 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:23:14,655 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:23:14,655 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:23:14,655 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:23:14,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:23:14,655 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:23:14,655 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:23:14,656 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:23:14,656 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:23:14,656 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:23:14,656 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:23:14,656 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:23:14,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:23:14,656 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:23:14,657 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:23:14,657 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:23:14,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:23:14,700 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:23:14,704 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:23:14,705 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:23:14,705 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:23:14,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/20020406-1_false-valid-memtrack.i [2018-01-23 14:23:14,914 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:23:14,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:23:14,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:23:14,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:23:14,925 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:23:14,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:23:14" (1/1) ... [2018-01-23 14:23:14,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2e8067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:14, skipping insertion in model container [2018-01-23 14:23:14,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:23:14" (1/1) ... [2018-01-23 14:23:14,943 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:23:14,990 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:23:15,127 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:23:15,158 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:23:15,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15 WrapperNode [2018-01-23 14:23:15,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:23:15,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:23:15,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:23:15,171 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:23:15,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (1/1) ... [2018-01-23 14:23:15,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (1/1) ... [2018-01-23 14:23:15,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (1/1) ... [2018-01-23 14:23:15,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (1/1) ... [2018-01-23 14:23:15,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (1/1) ... [2018-01-23 14:23:15,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (1/1) ... [2018-01-23 14:23:15,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (1/1) ... [2018-01-23 14:23:15,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:23:15,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:23:15,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:23:15,226 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:23:15,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (1/1) ... No working directory specified, using /storage/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 [2018-01-23 14:23:15,286 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:23:15,286 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:23:15,286 INFO L136 BoogieDeclarations]: Found implementation of procedure FFmul [2018-01-23 14:23:15,286 INFO L136 BoogieDeclarations]: Found implementation of procedure DUPFFdeg [2018-01-23 14:23:15,287 INFO L136 BoogieDeclarations]: Found implementation of procedure DUPFFnew [2018-01-23 14:23:15,287 INFO L136 BoogieDeclarations]: Found implementation of procedure DUPFFfree [2018-01-23 14:23:15,287 INFO L136 BoogieDeclarations]: Found implementation of procedure DUPFFswap [2018-01-23 14:23:15,287 INFO L136 BoogieDeclarations]: Found implementation of procedure DUPFFcopy [2018-01-23 14:23:15,287 INFO L136 BoogieDeclarations]: Found implementation of procedure DUPFFshift_add [2018-01-23 14:23:15,287 INFO L136 BoogieDeclarations]: Found implementation of procedure DUPFFexgcd [2018-01-23 14:23:15,288 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:23:15,288 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-23 14:23:15,288 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-23 14:23:15,288 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:23:15,288 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:23:15,288 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:23:15,288 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:23:15,289 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:23:15,289 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-23 14:23:15,289 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-23 14:23:15,289 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-23 14:23:15,289 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-23 14:23:15,289 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-23 14:23:15,290 INFO L128 BoogieDeclarations]: Found specification of procedure FFmul [2018-01-23 14:23:15,290 INFO L128 BoogieDeclarations]: Found specification of procedure DUPFFdeg [2018-01-23 14:23:15,290 INFO L128 BoogieDeclarations]: Found specification of procedure DUPFFnew [2018-01-23 14:23:15,290 INFO L128 BoogieDeclarations]: Found specification of procedure DUPFFfree [2018-01-23 14:23:15,290 INFO L128 BoogieDeclarations]: Found specification of procedure DUPFFswap [2018-01-23 14:23:15,290 INFO L128 BoogieDeclarations]: Found specification of procedure DUPFFcopy [2018-01-23 14:23:15,291 INFO L128 BoogieDeclarations]: Found specification of procedure DUPFFshift_add [2018-01-23 14:23:15,291 INFO L128 BoogieDeclarations]: Found specification of procedure DUPFFexgcd [2018-01-23 14:23:15,291 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:23:15,291 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:23:15,291 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:23:15,799 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:23:15,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:23:15 BoogieIcfgContainer [2018-01-23 14:23:15,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:23:15,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:23:15,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:23:15,802 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:23:15,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:23:14" (1/3) ... [2018-01-23 14:23:15,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4239c4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:23:15, skipping insertion in model container [2018-01-23 14:23:15,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:23:15" (2/3) ... [2018-01-23 14:23:15,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4239c4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:23:15, skipping insertion in model container [2018-01-23 14:23:15,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:23:15" (3/3) ... [2018-01-23 14:23:15,805 INFO L105 eAbstractionObserver]: Analyzing ICFG 20020406-1_false-valid-memtrack.i [2018-01-23 14:23:15,811 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:23:15,818 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-01-23 14:23:15,869 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:15,869 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:15,870 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:15,870 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:15,870 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:15,870 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:15,870 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:15,870 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DUPFFnewErr0EnsuresViolation======== [2018-01-23 14:23:15,871 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-23 14:23:15,903 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:15,904 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:15,904 INFO L371 AbstractCegarLoop]: === Iteration 1 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:15,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1285108215, now seen corresponding path program 1 times [2018-01-23 14:23:15,911 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:15,912 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:15,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:15,953 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:15,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:16,023 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:16,222 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:16,223 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:23:16,224 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:23:16,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:23:16,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:23:16,236 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2018-01-23 14:23:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:16,327 INFO L93 Difference]: Finished difference Result 329 states and 416 transitions. [2018-01-23 14:23:16,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:23:16,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-01-23 14:23:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:16,337 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:16,338 INFO L226 Difference]: Without dead ends: 103 [2018-01-23 14:23:16,343 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-23 14:23:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-01-23 14:23:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-01-23 14:23:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2018-01-23 14:23:16,391 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 19 [2018-01-23 14:23:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:16,391 INFO L432 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2018-01-23 14:23:16,392 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:23:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2018-01-23 14:23:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-23 14:23:16,394 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:16,394 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:16,394 INFO L371 AbstractCegarLoop]: === Iteration 2 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:16,394 INFO L82 PathProgramCache]: Analyzing trace with hash 824169485, now seen corresponding path program 1 times [2018-01-23 14:23:16,395 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:16,395 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:16,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:16,396 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:16,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:16,425 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:16,511 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:16,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:23:16,513 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:23:16,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:23:16,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:23:16,514 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 6 states. [2018-01-23 14:23:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:16,634 INFO L93 Difference]: Finished difference Result 189 states and 223 transitions. [2018-01-23 14:23:16,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-23 14:23:16,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-01-23 14:23:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:16,638 INFO L225 Difference]: With dead ends: 189 [2018-01-23 14:23:16,638 INFO L226 Difference]: Without dead ends: 106 [2018-01-23 14:23:16,639 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-23 14:23:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-01-23 14:23:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2018-01-23 14:23:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-23 14:23:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2018-01-23 14:23:16,650 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 28 [2018-01-23 14:23:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:16,650 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2018-01-23 14:23:16,650 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:23:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2018-01-23 14:23:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-23 14:23:16,651 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:16,651 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:16,651 INFO L371 AbstractCegarLoop]: === Iteration 3 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:16,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2128486935, now seen corresponding path program 1 times [2018-01-23 14:23:16,652 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:16,652 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:16,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:16,653 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:16,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:16,684 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:16,792 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:16,792 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:16,801 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:16,845 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:16,909 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:16,909 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-01-23 14:23:16,909 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-23 14:23:16,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-23 14:23:16,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:23:16,910 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 10 states. [2018-01-23 14:23:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:17,239 INFO L93 Difference]: Finished difference Result 211 states and 251 transitions. [2018-01-23 14:23:17,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-23 14:23:17,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-01-23 14:23:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:17,242 INFO L225 Difference]: With dead ends: 211 [2018-01-23 14:23:17,242 INFO L226 Difference]: Without dead ends: 125 [2018-01-23 14:23:17,243 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:23:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-23 14:23:17,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2018-01-23 14:23:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-01-23 14:23:17,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2018-01-23 14:23:17,258 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 29 [2018-01-23 14:23:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:17,259 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2018-01-23 14:23:17,259 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-23 14:23:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2018-01-23 14:23:17,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:23:17,260 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:17,260 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:17,260 INFO L371 AbstractCegarLoop]: === Iteration 4 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:17,260 INFO L82 PathProgramCache]: Analyzing trace with hash -387345075, now seen corresponding path program 2 times [2018-01-23 14:23:17,260 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:17,261 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:17,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:17,261 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:17,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:17,286 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:17,363 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:17,363 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:17,373 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:23:17,397 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:17,406 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:17,406 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:23:17,409 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:17,456 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:17,456 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-01-23 14:23:17,457 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-23 14:23:17,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-23 14:23:17,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-01-23 14:23:17,457 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 11 states. [2018-01-23 14:23:17,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:17,682 INFO L93 Difference]: Finished difference Result 230 states and 271 transitions. [2018-01-23 14:23:17,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-23 14:23:17,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-01-23 14:23:17,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:17,684 INFO L225 Difference]: With dead ends: 230 [2018-01-23 14:23:17,684 INFO L226 Difference]: Without dead ends: 128 [2018-01-23 14:23:17,685 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-01-23 14:23:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-01-23 14:23:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2018-01-23 14:23:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-23 14:23:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2018-01-23 14:23:17,699 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 30 [2018-01-23 14:23:17,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:17,700 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2018-01-23 14:23:17,700 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-23 14:23:17,700 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2018-01-23 14:23:17,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-23 14:23:17,701 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:17,701 INFO L322 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-01-23 14:23:17,701 INFO L371 AbstractCegarLoop]: === Iteration 5 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1068726057, now seen corresponding path program 3 times [2018-01-23 14:23:17,701 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:17,702 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:17,702 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:17,702 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:23:17,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:17,724 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:17,839 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:17,839 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:17,847 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:23:17,874 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:23:17,887 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:23:17,930 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:23:17,931 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:23:17,939 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:18,025 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:18,025 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-01-23 14:23:18,025 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:23:18,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:23:18,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:23:18,026 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 12 states. [2018-01-23 14:23:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:18,285 INFO L93 Difference]: Finished difference Result 234 states and 277 transitions. [2018-01-23 14:23:18,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-23 14:23:18,285 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2018-01-23 14:23:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:18,287 INFO L225 Difference]: With dead ends: 234 [2018-01-23 14:23:18,287 INFO L226 Difference]: Without dead ends: 131 [2018-01-23 14:23:18,288 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:23:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-23 14:23:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2018-01-23 14:23:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-23 14:23:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2018-01-23 14:23:18,301 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 31 [2018-01-23 14:23:18,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:18,301 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2018-01-23 14:23:18,301 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:23:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2018-01-23 14:23:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:23:18,302 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:18,302 INFO L322 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:18,302 INFO L371 AbstractCegarLoop]: === Iteration 6 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:18,302 INFO L82 PathProgramCache]: Analyzing trace with hash -716700019, now seen corresponding path program 4 times [2018-01-23 14:23:18,302 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:18,303 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:18,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:18,304 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:23:18,304 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:18,324 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:18,406 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:18,406 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:18,415 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:23:18,443 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:23:18,446 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:18,515 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:18,522 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2018-01-23 14:23:18,523 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-23 14:23:18,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-23 14:23:18,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-01-23 14:23:18,523 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 13 states. [2018-01-23 14:23:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:18,672 INFO L93 Difference]: Finished difference Result 238 states and 283 transitions. [2018-01-23 14:23:18,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-23 14:23:18,672 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2018-01-23 14:23:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:18,674 INFO L225 Difference]: With dead ends: 238 [2018-01-23 14:23:18,674 INFO L226 Difference]: Without dead ends: 134 [2018-01-23 14:23:18,675 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2018-01-23 14:23:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-23 14:23:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 124. [2018-01-23 14:23:18,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-01-23 14:23:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2018-01-23 14:23:18,693 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 32 [2018-01-23 14:23:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:18,694 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2018-01-23 14:23:18,694 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-23 14:23:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2018-01-23 14:23:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-23 14:23:18,695 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:18,695 INFO L322 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:18,695 INFO L371 AbstractCegarLoop]: === Iteration 7 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1606172567, now seen corresponding path program 5 times [2018-01-23 14:23:18,695 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:18,695 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:18,696 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:18,696 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:23:18,696 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:18,719 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:18,826 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:18,827 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:18,832 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:23:18,839 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:18,842 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:18,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:18,870 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:18,883 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:23:18,886 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:18,955 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:18,955 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-01-23 14:23:18,955 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-23 14:23:18,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-23 14:23:18,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:23:18,956 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 14 states. [2018-01-23 14:23:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:19,120 INFO L93 Difference]: Finished difference Result 242 states and 289 transitions. [2018-01-23 14:23:19,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-23 14:23:19,120 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-01-23 14:23:19,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:19,122 INFO L225 Difference]: With dead ends: 242 [2018-01-23 14:23:19,122 INFO L226 Difference]: Without dead ends: 137 [2018-01-23 14:23:19,123 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2018-01-23 14:23:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-01-23 14:23:19,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2018-01-23 14:23:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-23 14:23:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 149 transitions. [2018-01-23 14:23:19,133 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 149 transitions. Word has length 33 [2018-01-23 14:23:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:19,133 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 149 transitions. [2018-01-23 14:23:19,133 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-23 14:23:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 149 transitions. [2018-01-23 14:23:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-23 14:23:19,134 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:19,134 INFO L322 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:19,134 INFO L371 AbstractCegarLoop]: === Iteration 8 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:19,135 INFO L82 PathProgramCache]: Analyzing trace with hash 600778701, now seen corresponding path program 6 times [2018-01-23 14:23:19,135 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:19,135 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:19,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:19,136 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:23:19,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:19,156 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:19,283 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:19,283 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:19,292 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:23:19,308 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:23:19,324 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:23:19,340 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:23:19,453 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:23:19,454 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:23:19,457 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:19,519 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:19,520 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2018-01-23 14:23:19,520 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-23 14:23:19,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-23 14:23:19,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-01-23 14:23:19,521 INFO L87 Difference]: Start difference. First operand 125 states and 149 transitions. Second operand 15 states. [2018-01-23 14:23:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:19,791 INFO L93 Difference]: Finished difference Result 246 states and 295 transitions. [2018-01-23 14:23:19,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-23 14:23:19,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-01-23 14:23:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:19,792 INFO L225 Difference]: With dead ends: 246 [2018-01-23 14:23:19,792 INFO L226 Difference]: Without dead ends: 140 [2018-01-23 14:23:19,793 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2018-01-23 14:23:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-23 14:23:19,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 126. [2018-01-23 14:23:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-23 14:23:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2018-01-23 14:23:19,803 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 34 [2018-01-23 14:23:19,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:19,803 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2018-01-23 14:23:19,803 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-23 14:23:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2018-01-23 14:23:19,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-23 14:23:19,804 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:19,804 INFO L322 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:19,804 INFO L371 AbstractCegarLoop]: === Iteration 9 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:19,805 INFO L82 PathProgramCache]: Analyzing trace with hash -501660073, now seen corresponding path program 7 times [2018-01-23 14:23:19,805 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:19,805 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:19,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:19,806 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:23:19,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:19,827 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:19,924 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:19,924 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:19,930 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:19,954 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:23:20,019 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:20,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 16 [2018-01-23 14:23:20,019 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-23 14:23:20,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-23 14:23:20,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-01-23 14:23:20,024 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand 16 states. [2018-01-23 14:23:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:20,164 INFO L93 Difference]: Finished difference Result 250 states and 301 transitions. [2018-01-23 14:23:20,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-23 14:23:20,165 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2018-01-23 14:23:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:20,166 INFO L225 Difference]: With dead ends: 250 [2018-01-23 14:23:20,166 INFO L226 Difference]: Without dead ends: 143 [2018-01-23 14:23:20,167 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2018-01-23 14:23:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-23 14:23:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2018-01-23 14:23:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-23 14:23:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2018-01-23 14:23:20,175 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 35 [2018-01-23 14:23:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:20,175 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2018-01-23 14:23:20,175 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-23 14:23:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2018-01-23 14:23:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-23 14:23:20,176 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:20,176 INFO L322 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:20,176 INFO L371 AbstractCegarLoop]: === Iteration 10 === [DUPFFnewErr0EnsuresViolation]=== [2018-01-23 14:23:20,177 INFO L82 PathProgramCache]: Analyzing trace with hash -317523699, now seen corresponding path program 8 times [2018-01-23 14:23:20,177 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:20,177 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:20,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:20,178 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:20,178 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:23:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:23:20,242 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:23:20,253 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:23:20,257 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2018-01-23 14:23:20,259 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:23:20,275 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:20,275 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:20,275 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:20,275 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:20,275 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:20,275 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:20,275 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:20,276 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DUPFFexgcdErr0EnsuresViolation======== [2018-01-23 14:23:20,276 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-01-23 14:23:20,281 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:20,281 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:20,281 INFO L371 AbstractCegarLoop]: === Iteration 1 === [DUPFFexgcdErr0EnsuresViolation]=== [2018-01-23 14:23:20,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2095005952, now seen corresponding path program 1 times [2018-01-23 14:23:20,281 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:20,282 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:20,282 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:20,283 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:20,283 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:20,292 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-23 14:23:20,462 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:20,462 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:20,488 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:20,538 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-01-23 14:23:20,566 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:20,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2018-01-23 14:23:20,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:20,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:20,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:20,568 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:20,854 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:20,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:20,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2018-01-23 14:23:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:20,857 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:20,857 INFO L226 Difference]: Without dead ends: 161 [2018-01-23 14:23:20,858 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:20,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-23 14:23:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-01-23 14:23:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-23 14:23:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 202 transitions. [2018-01-23 14:23:20,866 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 202 transitions. Word has length 71 [2018-01-23 14:23:20,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:20,866 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 202 transitions. [2018-01-23 14:23:20,866 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:20,866 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 202 transitions. [2018-01-23 14:23:20,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-23 14:23:20,868 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:20,868 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:20,868 INFO L371 AbstractCegarLoop]: === Iteration 2 === [DUPFFexgcdErr0EnsuresViolation]=== [2018-01-23 14:23:20,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1742614248, now seen corresponding path program 1 times [2018-01-23 14:23:20,868 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:20,868 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:20,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:20,869 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:20,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:20,882 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-23 14:23:20,929 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:20,929 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:23:20,929 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:23:20,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:23:20,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:23:20,930 INFO L87 Difference]: Start difference. First operand 161 states and 202 transitions. Second operand 4 states. [2018-01-23 14:23:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:21,174 INFO L93 Difference]: Finished difference Result 301 states and 379 transitions. [2018-01-23 14:23:21,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:23:21,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2018-01-23 14:23:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:21,176 INFO L225 Difference]: With dead ends: 301 [2018-01-23 14:23:21,176 INFO L226 Difference]: Without dead ends: 166 [2018-01-23 14:23:21,177 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-23 14:23:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-01-23 14:23:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-01-23 14:23:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 206 transitions. [2018-01-23 14:23:21,189 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 206 transitions. Word has length 80 [2018-01-23 14:23:21,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:21,189 INFO L432 AbstractCegarLoop]: Abstraction has 166 states and 206 transitions. [2018-01-23 14:23:21,189 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:23:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 206 transitions. [2018-01-23 14:23:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-01-23 14:23:21,191 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:21,191 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:21,191 INFO L371 AbstractCegarLoop]: === Iteration 3 === [DUPFFexgcdErr0EnsuresViolation]=== [2018-01-23 14:23:21,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1504134624, now seen corresponding path program 1 times [2018-01-23 14:23:21,192 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:21,192 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:21,192 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,193 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:21,193 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:21,212 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-01-23 14:23:21,243 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:21,243 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:23:21,243 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:23:21,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:23:21,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:23:21,244 INFO L87 Difference]: Start difference. First operand 166 states and 206 transitions. Second operand 3 states. [2018-01-23 14:23:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:21,256 INFO L93 Difference]: Finished difference Result 283 states and 354 transitions. [2018-01-23 14:23:21,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:23:21,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2018-01-23 14:23:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:21,258 INFO L225 Difference]: With dead ends: 283 [2018-01-23 14:23:21,258 INFO L226 Difference]: Without dead ends: 166 [2018-01-23 14:23:21,258 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:23:21,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-23 14:23:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-01-23 14:23:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-01-23 14:23:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 205 transitions. [2018-01-23 14:23:21,269 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 205 transitions. Word has length 89 [2018-01-23 14:23:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:21,269 INFO L432 AbstractCegarLoop]: Abstraction has 166 states and 205 transitions. [2018-01-23 14:23:21,270 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:23:21,270 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 205 transitions. [2018-01-23 14:23:21,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-01-23 14:23:21,271 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:21,271 INFO L322 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:21,271 INFO L371 AbstractCegarLoop]: === Iteration 4 === [DUPFFexgcdErr0EnsuresViolation]=== [2018-01-23 14:23:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1537359461, now seen corresponding path program 1 times [2018-01-23 14:23:21,271 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:21,271 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:21,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,272 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:21,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:21,294 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-01-23 14:23:21,347 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:21,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:23:21,348 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:23:21,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:23:21,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:23:21,348 INFO L87 Difference]: Start difference. First operand 166 states and 205 transitions. Second operand 3 states. [2018-01-23 14:23:21,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:21,649 INFO L93 Difference]: Finished difference Result 166 states and 205 transitions. [2018-01-23 14:23:21,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:23:21,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2018-01-23 14:23:21,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:21,650 INFO L225 Difference]: With dead ends: 166 [2018-01-23 14:23:21,650 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:21,651 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:23:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:21,652 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2018-01-23 14:23:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:21,652 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:21,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:23:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:21,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:21,655 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:21,656 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:21,656 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:21,656 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:21,656 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:21,656 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:21,656 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:21,656 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:23:21,656 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:23:21,659 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:21,659 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:23:21,659 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:23:21,659 INFO L82 PathProgramCache]: Analyzing trace with hash 312865, now seen corresponding path program 1 times [2018-01-23 14:23:21,659 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:21,660 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:21,660 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,660 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:21,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:23:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:23:21,665 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:23:21,666 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:23:21,668 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:21,668 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:21,668 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:21,668 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:21,668 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:21,669 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:21,669 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:21,669 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DUPFFcopyErr0EnsuresViolation======== [2018-01-23 14:23:21,669 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:21,670 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:21,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-01-23 14:23:21,672 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:21,672 INFO L322 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:21,672 INFO L371 AbstractCegarLoop]: === Iteration 1 === [DUPFFcopyErr0EnsuresViolation]=== [2018-01-23 14:23:21,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1190895175, now seen corresponding path program 1 times [2018-01-23 14:23:21,673 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:21,673 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:21,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,674 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:21,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:21,685 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-01-23 14:23:21,798 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:21,798 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:21,806 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:21,858 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-23 14:23:21,888 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:21,889 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2018-01-23 14:23:21,889 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:21,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:21,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:21,889 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:21,979 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:21,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:21,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2018-01-23 14:23:21,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:21,981 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:21,981 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:21,982 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:21,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 89 [2018-01-23 14:23:21,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:21,984 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:21,984 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:21,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:21,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:21,986 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:21,986 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:21,986 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:21,986 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:21,986 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:21,986 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:21,986 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:21,986 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DUPFFswapErr0EnsuresViolation======== [2018-01-23 14:23:21,986 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-01-23 14:23:21,991 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:21,991 INFO L322 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:21,991 INFO L371 AbstractCegarLoop]: === Iteration 1 === [DUPFFswapErr0EnsuresViolation]=== [2018-01-23 14:23:21,992 INFO L82 PathProgramCache]: Analyzing trace with hash -331476965, now seen corresponding path program 1 times [2018-01-23 14:23:21,992 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:21,992 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:21,993 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:21,993 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:21,993 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:22,007 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-01-23 14:23:22,105 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:22,106 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:22,113 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:22,201 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-01-23 14:23:22,262 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:22,263 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2018-01-23 14:23:22,263 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:22,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:22,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:22,263 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:22,409 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:22,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:22,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2018-01-23 14:23:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:22,410 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:22,411 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:22,412 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:22,416 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2018-01-23 14:23:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:22,417 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:22,417 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:22,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:22,419 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:22,419 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:22,419 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:22,419 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:22,419 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:22,419 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:22,419 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:22,419 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DUPFFshift_addErr0EnsuresViolation======== [2018-01-23 14:23:22,419 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:22,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-01-23 14:23:22,426 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:22,427 INFO L322 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:22,427 INFO L371 AbstractCegarLoop]: === Iteration 1 === [DUPFFshift_addErr0EnsuresViolation]=== [2018-01-23 14:23:22,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2020531893, now seen corresponding path program 1 times [2018-01-23 14:23:22,428 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:22,428 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:22,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:22,429 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:22,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:22,444 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-01-23 14:23:22,552 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:22,552 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:22,564 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:22,677 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-01-23 14:23:22,721 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:22,722 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2018-01-23 14:23:22,722 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:22,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:22,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:22,722 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:22,776 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:22,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:22,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2018-01-23 14:23:22,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:22,777 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:22,777 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:22,778 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:22,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 202 [2018-01-23 14:23:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:22,779 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:22,779 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:22,779 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:22,781 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:22,781 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:22,781 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:22,781 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:22,782 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:22,782 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:22,782 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:22,782 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DUPFFdegErr0EnsuresViolation======== [2018-01-23 14:23:22,782 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:22,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-23 14:23:22,784 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:22,785 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:22,785 INFO L371 AbstractCegarLoop]: === Iteration 1 === [DUPFFdegErr0EnsuresViolation]=== [2018-01-23 14:23:22,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1016018150, now seen corresponding path program 1 times [2018-01-23 14:23:22,786 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:22,786 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:22,787 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:22,787 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:22,787 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:22,795 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-01-23 14:23:22,853 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:22,853 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:22,861 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:22,899 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-23 14:23:22,936 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:22,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 5 [2018-01-23 14:23:22,937 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:22,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:22,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:22,937 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:23,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:23,067 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:23,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:23,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-01-23 14:23:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:23,068 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:23,068 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:23,070 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:23,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:23,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:23,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2018-01-23 14:23:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:23,071 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:23,071 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:23,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:23,072 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:23,073 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:23,073 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:23,073 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:23,073 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:23,073 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:23,073 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:23,073 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:23:23,073 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-23 14:23:23,076 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:23,076 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:23,076 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:23:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash 181584116, now seen corresponding path program 1 times [2018-01-23 14:23:23,076 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:23,077 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:23,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:23,077 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:23,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:23,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-23 14:23:23,141 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:23,141 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:23,150 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:23,198 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-01-23 14:23:23,238 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:23,239 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2018-01-23 14:23:23,239 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:23,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:23,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:23,239 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:23,304 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:23,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:23,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2018-01-23 14:23:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:23,307 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:23,307 INFO L226 Difference]: Without dead ends: 169 [2018-01-23 14:23:23,308 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-01-23 14:23:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-01-23 14:23:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-23 14:23:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 210 transitions. [2018-01-23 14:23:23,319 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 210 transitions. Word has length 80 [2018-01-23 14:23:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:23,319 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 210 transitions. [2018-01-23 14:23:23,319 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 210 transitions. [2018-01-23 14:23:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-01-23 14:23:23,321 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:23,321 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:23,321 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:23:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash 399018460, now seen corresponding path program 1 times [2018-01-23 14:23:23,322 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:23,322 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:23,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:23,323 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:23,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:23,338 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-23 14:23:23,382 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:23,382 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:23:23,383 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:23:23,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:23:23,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:23:23,383 INFO L87 Difference]: Start difference. First operand 169 states and 210 transitions. Second operand 4 states. [2018-01-23 14:23:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:23,438 INFO L93 Difference]: Finished difference Result 317 states and 395 transitions. [2018-01-23 14:23:23,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:23:23,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2018-01-23 14:23:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:23,441 INFO L225 Difference]: With dead ends: 317 [2018-01-23 14:23:23,441 INFO L226 Difference]: Without dead ends: 174 [2018-01-23 14:23:23,442 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-23 14:23:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-01-23 14:23:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-23 14:23:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 214 transitions. [2018-01-23 14:23:23,453 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 214 transitions. Word has length 89 [2018-01-23 14:23:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:23,453 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 214 transitions. [2018-01-23 14:23:23,454 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:23:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 214 transitions. [2018-01-23 14:23:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-01-23 14:23:23,455 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:23,455 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:23,455 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:23:23,455 INFO L82 PathProgramCache]: Analyzing trace with hash 546523604, now seen corresponding path program 1 times [2018-01-23 14:23:23,455 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:23,455 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:23,456 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:23,456 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:23,456 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:23,476 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-01-23 14:23:23,506 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:23,506 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:23:23,506 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:23:23,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:23:23,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:23:23,507 INFO L87 Difference]: Start difference. First operand 174 states and 214 transitions. Second operand 3 states. [2018-01-23 14:23:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:23,521 INFO L93 Difference]: Finished difference Result 299 states and 370 transitions. [2018-01-23 14:23:23,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:23:23,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2018-01-23 14:23:23,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:23,523 INFO L225 Difference]: With dead ends: 299 [2018-01-23 14:23:23,523 INFO L226 Difference]: Without dead ends: 174 [2018-01-23 14:23:23,524 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:23:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-23 14:23:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-01-23 14:23:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-23 14:23:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 213 transitions. [2018-01-23 14:23:23,534 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 213 transitions. Word has length 98 [2018-01-23 14:23:23,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:23,535 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 213 transitions. [2018-01-23 14:23:23,535 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:23:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 213 transitions. [2018-01-23 14:23:23,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-01-23 14:23:23,536 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:23,536 INFO L322 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:23,536 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:23:23,536 INFO L82 PathProgramCache]: Analyzing trace with hash 297304484, now seen corresponding path program 1 times [2018-01-23 14:23:23,536 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:23,536 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:23,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:23,537 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:23,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:23,561 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-23 14:23:23,655 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:23,655 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:23,670 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:23,736 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-23 14:23:23,878 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:23,878 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2018-01-23 14:23:23,879 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-23 14:23:23,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-23 14:23:23,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:23:23,879 INFO L87 Difference]: Start difference. First operand 174 states and 213 transitions. Second operand 10 states. [2018-01-23 14:23:24,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:24,091 INFO L93 Difference]: Finished difference Result 353 states and 436 transitions. [2018-01-23 14:23:24,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:23:24,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2018-01-23 14:23:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:24,093 INFO L225 Difference]: With dead ends: 353 [2018-01-23 14:23:24,093 INFO L226 Difference]: Without dead ends: 183 [2018-01-23 14:23:24,094 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-01-23 14:23:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-23 14:23:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 178. [2018-01-23 14:23:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-23 14:23:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 218 transitions. [2018-01-23 14:23:24,104 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 218 transitions. Word has length 105 [2018-01-23 14:23:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:24,105 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 218 transitions. [2018-01-23 14:23:24,105 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-23 14:23:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 218 transitions. [2018-01-23 14:23:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-01-23 14:23:24,106 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:24,106 INFO L322 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:24,106 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:23:24,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1453710202, now seen corresponding path program 1 times [2018-01-23 14:23:24,107 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:24,107 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:24,107 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:24,107 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:24,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:24,134 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-23 14:23:24,246 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:24,246 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:24,254 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:24,321 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-01-23 14:23:24,391 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:24,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-01-23 14:23:24,392 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-23 14:23:24,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-23 14:23:24,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-01-23 14:23:24,392 INFO L87 Difference]: Start difference. First operand 178 states and 218 transitions. Second operand 11 states. [2018-01-23 14:23:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:24,582 INFO L93 Difference]: Finished difference Result 361 states and 446 transitions. [2018-01-23 14:23:24,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-23 14:23:24,582 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2018-01-23 14:23:24,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:24,584 INFO L225 Difference]: With dead ends: 361 [2018-01-23 14:23:24,585 INFO L226 Difference]: Without dead ends: 187 [2018-01-23 14:23:24,586 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-01-23 14:23:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-23 14:23:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 179. [2018-01-23 14:23:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-23 14:23:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 220 transitions. [2018-01-23 14:23:24,598 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 220 transitions. Word has length 107 [2018-01-23 14:23:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:24,598 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 220 transitions. [2018-01-23 14:23:24,598 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-23 14:23:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 220 transitions. [2018-01-23 14:23:24,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-01-23 14:23:24,599 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:24,600 INFO L322 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:24,600 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:23:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1361714332, now seen corresponding path program 2 times [2018-01-23 14:23:24,600 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:24,600 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:24,601 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:24,601 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:24,601 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:24,630 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-23 14:23:24,752 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:24,752 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:24,761 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:23:24,799 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:24,854 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:24,860 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:23:24,865 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-23 14:23:24,997 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:24,997 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2018-01-23 14:23:24,997 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:23:24,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:23:24,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:23:24,998 INFO L87 Difference]: Start difference. First operand 179 states and 220 transitions. Second operand 12 states. [2018-01-23 14:23:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:25,396 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2018-01-23 14:23:25,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-23 14:23:25,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2018-01-23 14:23:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:25,397 INFO L225 Difference]: With dead ends: 220 [2018-01-23 14:23:25,397 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:25,398 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2018-01-23 14:23:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:25,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2018-01-23 14:23:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:25,399 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:25,399 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:23:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:25,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:25,401 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:25,401 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:25,402 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:25,402 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:25,402 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:25,402 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:25,402 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:25,402 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DUPFFfreeErr0EnsuresViolation======== [2018-01-23 14:23:25,402 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-01-23 14:23:25,406 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:25,406 INFO L322 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:25,406 INFO L371 AbstractCegarLoop]: === Iteration 1 === [DUPFFfreeErr0EnsuresViolation]=== [2018-01-23 14:23:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash -331327684, now seen corresponding path program 1 times [2018-01-23 14:23:25,407 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:25,407 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:25,407 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:25,408 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:25,408 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:25,422 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-01-23 14:23:25,539 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:25,539 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:25,547 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:25,648 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-01-23 14:23:25,699 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:25,700 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2018-01-23 14:23:25,700 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:25,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:25,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:25,701 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:25,762 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:25,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:25,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2018-01-23 14:23:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:25,763 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:25,763 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:25,765 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:25,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:25,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 164 [2018-01-23 14:23:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:25,766 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:25,766 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:25,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:25,767 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:25,768 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:25,768 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:25,768 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:25,768 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:25,768 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:25,768 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:25,768 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:23:25,768 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-23 14:23:25,771 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:25,771 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:25,771 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:23:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1014335068, now seen corresponding path program 1 times [2018-01-23 14:23:25,771 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:25,771 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:25,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:25,772 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:25,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:25,781 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-23 14:23:25,833 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:25,833 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:25,844 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:25,892 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-01-23 14:23:25,931 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:25,931 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2018-01-23 14:23:25,932 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:25,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:25,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:25,932 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:25,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:25,995 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:25,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:25,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2018-01-23 14:23:25,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:25,997 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:25,997 INFO L226 Difference]: Without dead ends: 167 [2018-01-23 14:23:25,998 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-23 14:23:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-01-23 14:23:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-01-23 14:23:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 208 transitions. [2018-01-23 14:23:26,007 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 208 transitions. Word has length 78 [2018-01-23 14:23:26,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:26,007 INFO L432 AbstractCegarLoop]: Abstraction has 167 states and 208 transitions. [2018-01-23 14:23:26,007 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 208 transitions. [2018-01-23 14:23:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-01-23 14:23:26,008 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:26,008 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:26,008 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-23 14:23:26,008 INFO L82 PathProgramCache]: Analyzing trace with hash -844276596, now seen corresponding path program 1 times [2018-01-23 14:23:26,008 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:26,008 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:26,009 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:26,009 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:26,009 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:26,022 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-23 14:23:26,055 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:26,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:23:26,055 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:23:26,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:23:26,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:23:26,056 INFO L87 Difference]: Start difference. First operand 167 states and 208 transitions. Second operand 4 states. [2018-01-23 14:23:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:26,111 INFO L93 Difference]: Finished difference Result 313 states and 391 transitions. [2018-01-23 14:23:26,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:23:26,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-01-23 14:23:26,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:26,113 INFO L225 Difference]: With dead ends: 313 [2018-01-23 14:23:26,113 INFO L226 Difference]: Without dead ends: 172 [2018-01-23 14:23:26,114 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-01-23 14:23:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-01-23 14:23:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-01-23 14:23:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2018-01-23 14:23:26,123 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 87 [2018-01-23 14:23:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:26,123 INFO L432 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2018-01-23 14:23:26,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:23:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2018-01-23 14:23:26,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-01-23 14:23:26,124 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:26,124 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:26,125 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-23 14:23:26,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1483228540, now seen corresponding path program 1 times [2018-01-23 14:23:26,125 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:26,125 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:26,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:26,126 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:26,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:26,147 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-01-23 14:23:26,182 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:23:26,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:23:26,182 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:23:26,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:23:26,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:23:26,183 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand 3 states. [2018-01-23 14:23:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:26,197 INFO L93 Difference]: Finished difference Result 295 states and 366 transitions. [2018-01-23 14:23:26,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:23:26,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2018-01-23 14:23:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:26,199 INFO L225 Difference]: With dead ends: 295 [2018-01-23 14:23:26,199 INFO L226 Difference]: Without dead ends: 172 [2018-01-23 14:23:26,200 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:23:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-01-23 14:23:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-01-23 14:23:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-01-23 14:23:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 211 transitions. [2018-01-23 14:23:26,211 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 211 transitions. Word has length 96 [2018-01-23 14:23:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:26,211 INFO L432 AbstractCegarLoop]: Abstraction has 172 states and 211 transitions. [2018-01-23 14:23:26,211 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:23:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 211 transitions. [2018-01-23 14:23:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-01-23 14:23:26,213 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:26,213 INFO L322 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:26,213 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-23 14:23:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1095280212, now seen corresponding path program 1 times [2018-01-23 14:23:26,213 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:26,213 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:26,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:26,214 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:26,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:26,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-23 14:23:26,368 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:26,368 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:26,376 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:26,439 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-23 14:23:26,515 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:26,515 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2018-01-23 14:23:26,515 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-23 14:23:26,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-23 14:23:26,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:23:26,516 INFO L87 Difference]: Start difference. First operand 172 states and 211 transitions. Second operand 10 states. [2018-01-23 14:23:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:26,718 INFO L93 Difference]: Finished difference Result 349 states and 432 transitions. [2018-01-23 14:23:26,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:23:26,719 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2018-01-23 14:23:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:26,721 INFO L225 Difference]: With dead ends: 349 [2018-01-23 14:23:26,721 INFO L226 Difference]: Without dead ends: 181 [2018-01-23 14:23:26,722 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-01-23 14:23:26,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-23 14:23:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 176. [2018-01-23 14:23:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-23 14:23:26,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 216 transitions. [2018-01-23 14:23:26,731 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 216 transitions. Word has length 103 [2018-01-23 14:23:26,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:26,731 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 216 transitions. [2018-01-23 14:23:26,731 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-23 14:23:26,731 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 216 transitions. [2018-01-23 14:23:26,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-01-23 14:23:26,732 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:26,732 INFO L322 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:26,732 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-23 14:23:26,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1722181194, now seen corresponding path program 1 times [2018-01-23 14:23:26,733 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:26,733 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:26,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:26,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:26,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:26,757 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-23 14:23:26,923 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:26,923 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:26,928 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:26,972 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-01-23 14:23:27,044 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:27,044 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-01-23 14:23:27,044 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-23 14:23:27,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-23 14:23:27,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-01-23 14:23:27,044 INFO L87 Difference]: Start difference. First operand 176 states and 216 transitions. Second operand 11 states. [2018-01-23 14:23:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:27,208 INFO L93 Difference]: Finished difference Result 357 states and 442 transitions. [2018-01-23 14:23:27,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-23 14:23:27,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2018-01-23 14:23:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:27,211 INFO L225 Difference]: With dead ends: 357 [2018-01-23 14:23:27,212 INFO L226 Difference]: Without dead ends: 185 [2018-01-23 14:23:27,213 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-01-23 14:23:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-01-23 14:23:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2018-01-23 14:23:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-23 14:23:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 218 transitions. [2018-01-23 14:23:27,222 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 218 transitions. Word has length 105 [2018-01-23 14:23:27,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:27,222 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 218 transitions. [2018-01-23 14:23:27,223 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-23 14:23:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 218 transitions. [2018-01-23 14:23:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-01-23 14:23:27,224 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:27,224 INFO L322 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:27,224 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-23 14:23:27,224 INFO L82 PathProgramCache]: Analyzing trace with hash -707561452, now seen corresponding path program 2 times [2018-01-23 14:23:27,224 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:27,224 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:27,225 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:27,225 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:27,225 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:27,253 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-23 14:23:27,350 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:27,350 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:27,361 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:23:27,415 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:27,460 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:23:27,463 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:23:27,468 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-23 14:23:27,610 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:23:27,610 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2018-01-23 14:23:27,611 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:23:27,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:23:27,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:23:27,612 INFO L87 Difference]: Start difference. First operand 177 states and 218 transitions. Second operand 12 states. [2018-01-23 14:23:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:27,951 INFO L93 Difference]: Finished difference Result 218 states and 264 transitions. [2018-01-23 14:23:27,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-23 14:23:27,951 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2018-01-23 14:23:27,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:27,952 INFO L225 Difference]: With dead ends: 218 [2018-01-23 14:23:27,952 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:27,953 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2018-01-23 14:23:27,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:27,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:27,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2018-01-23 14:23:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:27,954 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:27,954 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:23:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:27,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:27,956 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:23:27,956 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:23:27,956 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:23:27,956 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:23:27,956 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:23:27,956 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:23:27,956 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:23:27,957 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == FFmulErr0EnsuresViolation======== [2018-01-23 14:23:27,957 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:23:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2018-01-23 14:23:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-01-23 14:23:27,960 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:23:27,960 INFO L322 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:23:27,960 INFO L371 AbstractCegarLoop]: === Iteration 1 === [FFmulErr0EnsuresViolation]=== [2018-01-23 14:23:27,961 INFO L82 PathProgramCache]: Analyzing trace with hash -713556063, now seen corresponding path program 1 times [2018-01-23 14:23:27,961 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:23:27,961 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:23:27,961 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:27,962 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:27,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:23:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:27,973 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:23:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-01-23 14:23:28,054 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:23:28,055 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:23:28,066 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:23:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:23:28,164 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:23:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-01-23 14:23:28,214 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:23:28,214 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2018-01-23 14:23:28,215 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:23:28,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:23:28,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:28,215 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 5 states. [2018-01-23 14:23:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:23:28,265 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2018-01-23 14:23:28,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:23:28,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2018-01-23 14:23:28,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:23:28,266 INFO L225 Difference]: With dead ends: 329 [2018-01-23 14:23:28,266 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:23:28,267 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:23:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:23:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:23:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:23:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:23:28,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2018-01-23 14:23:28,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:23:28,267 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:23:28,267 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:23:28,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:23:28,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:23:28,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:23:28 BoogieIcfgContainer [2018-01-23 14:23:28,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:23:28,271 INFO L168 Benchmark]: Toolchain (without parser) took 13356.43 ms. Allocated memory was 305.7 MB in the beginning and 682.6 MB in the end (delta: 377.0 MB). Free memory was 263.0 MB in the beginning and 415.7 MB in the end (delta: -152.7 MB). Peak memory consumption was 224.2 MB. Max. memory is 5.3 GB. [2018-01-23 14:23:28,272 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 305.7 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:23:28,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.20 ms. Allocated memory is still 305.7 MB. Free memory was 261.0 MB in the beginning and 248.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. [2018-01-23 14:23:28,273 INFO L168 Benchmark]: Boogie Preprocessor took 54.72 ms. Allocated memory is still 305.7 MB. Free memory was 248.8 MB in the beginning and 246.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:23:28,273 INFO L168 Benchmark]: RCFGBuilder took 573.70 ms. Allocated memory is still 305.7 MB. Free memory was 246.8 MB in the beginning and 205.9 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 5.3 GB. [2018-01-23 14:23:28,273 INFO L168 Benchmark]: TraceAbstraction took 12469.84 ms. Allocated memory was 305.7 MB in the beginning and 682.6 MB in the end (delta: 377.0 MB). Free memory was 205.9 MB in the beginning and 415.7 MB in the end (delta: -209.8 MB). Peak memory consumption was 167.2 MB. Max. memory is 5.3 GB. [2018-01-23 14:23:28,275 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 305.7 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 251.20 ms. Allocated memory is still 305.7 MB. Free memory was 261.0 MB in the beginning and 248.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 54.72 ms. Allocated memory is still 305.7 MB. Free memory was 248.8 MB in the beginning and 246.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 573.70 ms. Allocated memory is still 305.7 MB. Free memory was 246.8 MB in the beginning and 205.9 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 12469.84 ms. Allocated memory was 305.7 MB in the beginning and 682.6 MB in the end (delta: 377.0 MB). Free memory was 205.9 MB in the beginning and 415.7 MB in the end (delta: -209.8 MB). Peak memory consumption was 167.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 973]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1047] DUPFF f, g, cf, cg, h; VAL [f={16:0}, g={17:0}] [L1048] CALL DUPFFnew(1) VAL [\old(maxdeg)=1] [L975] EXPR, FCALL malloc(sizeof(struct DUPFFstruct)) VAL [\old(maxdeg)=1, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L975] DUPFF ans = (DUPFF)malloc(sizeof(struct DUPFFstruct)); VAL [\old(maxdeg)=1, ans={14:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L976] FCALL ans->coeffs = 0 VAL [\old(maxdeg)=1, ans={14:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L977] COND TRUE maxdeg >= 0 VAL [\old(maxdeg)=1, ans={14:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L978] EXPR, FCALL malloc((maxdeg+1)*sizeof(FFelem)) VAL [\old(maxdeg)=1, ans={14:0}, malloc((maxdeg+1)*sizeof(FFelem))={24:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L978] FCALL ans->coeffs = (FFelem*)malloc((maxdeg+1)*sizeof(FFelem)) VAL [\old(maxdeg)=1, ans={14:0}, malloc((maxdeg+1)*sizeof(FFelem))={24:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L979] EXPR, FCALL ans->coeffs VAL [\old(maxdeg)=1, ans={14:0}, ans->coeffs={24:0}, malloc((maxdeg+1)*sizeof(FFelem))={24:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L979] FCALL memset(ans->coeffs, 0, (maxdeg+1)*sizeof(FFelem)) VAL [\old(maxdeg)=1, ans={14:0}, ans->coeffs={24:0}, malloc((maxdeg+1)*sizeof(FFelem))={24:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1, memset(ans->coeffs, 0, (maxdeg+1)*sizeof(FFelem))={24:0}] [L981] FCALL ans->maxdeg = maxdeg VAL [\old(maxdeg)=1, ans={14:0}, malloc((maxdeg+1)*sizeof(FFelem))={24:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L982] FCALL ans->deg = -1 VAL [\old(maxdeg)=1, ans={14:0}, malloc((maxdeg+1)*sizeof(FFelem))={24:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] [L983] return ans; VAL [\old(maxdeg)=1, \result={14:0}, ans={14:0}, malloc((maxdeg+1)*sizeof(FFelem))={24:0}, malloc(sizeof(struct DUPFFstruct))={14:0}, maxdeg=1] - StatisticsResult: Ultimate Automizer benchmark data for error location: DUPFFnewErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. UNSAFE Result, 4.4s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 959 SDtfs, 428 SDslu, 6977 SDs, 0 SdLazy, 819 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 214 SyntacticMatches, 9 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 72 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 531 NumberOfCodeBlocks, 531 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 479 ConstructedInterpolants, 0 QuantifiedInterpolants, 29391 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1057 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 998]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: DUPFFexgcdErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 691 SDtfs, 110 SDslu, 873 SDs, 0 SdLazy, 135 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 424 NumberOfCodeBlocks, 424 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 45135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 281 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 200/209 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 991]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: DUPFFcopyErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 5 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 29 SDslu, 356 SDs, 0 SdLazy, 47 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 19272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 111/120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 988]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: DUPFFswapErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 6 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 29 SDslu, 356 SDs, 0 SdLazy, 47 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 328 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 326 ConstructedInterpolants, 0 QuantifiedInterpolants, 60147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 626 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 411/456 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 995]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: DUPFFshift_addErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 9 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 29 SDslu, 356 SDs, 0 SdLazy, 47 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 404 NumberOfCodeBlocks, 404 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 402 ConstructedInterpolants, 0 QuantifiedInterpolants, 89445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 744 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 627/672 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 969]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: DUPFFdegErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 29 SDslu, 356 SDs, 0 SdLazy, 47 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 6439 SizeOfPredicates, 0 NumberOfNonLiveVariables, 222 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 2.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 944 SDtfs, 159 SDslu, 3423 SDs, 0 SdLazy, 523 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 457 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 989 NumberOfCodeBlocks, 989 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 979 ConstructedInterpolants, 12 QuantifiedInterpolants, 157484 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1532 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 375/441 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 985]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: DUPFFfreeErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 6 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 29 SDslu, 356 SDs, 0 SdLazy, 47 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 328 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 326 ConstructedInterpolants, 0 QuantifiedInterpolants, 60147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 617 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 411/456 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1045]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 2.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 936 SDtfs, 158 SDslu, 3527 SDs, 0 SdLazy, 515 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 449 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 969 NumberOfCodeBlocks, 969 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 959 ConstructedInterpolants, 12 QuantifiedInterpolants, 152440 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1520 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 375/441 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 958]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: FFmulErr0EnsuresViolation CFG has 12 procedures, 165 locations, 11 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 7 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 29 SDslu, 356 SDs, 0 SdLazy, 47 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 66564 SizeOfPredicates, 0 NumberOfNonLiveVariables, 646 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 471/516 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-6-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-7-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-8-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-9-2018-01-23_14-23-28-286.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/20020406-1_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-10-2018-01-23_14-23-28-286.csv Received shutdown request...