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/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sum10_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 01:00:01,777 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 01:00:01,778 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 01:00:01,789 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 01:00:01,789 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 01:00:01,790 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 01:00:01,790 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 01:00:01,791 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 01:00:01,792 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 01:00:01,792 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 01:00:01,793 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 01:00:01,793 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 01:00:01,793 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 01:00:01,794 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 01:00:01,795 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 01:00:01,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 01:00:01,797 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 01:00:01,798 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 01:00:01,798 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 01:00:01,799 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 01:00:01,800 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 01:00:01,803 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-30 01:00:01,808 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 01:00:01,808 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 01:00:01,809 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 01:00:01,809 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 01:00:01,809 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 01:00:01,809 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 01:00:01,809 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 01:00:01,809 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 01:00:01,809 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 01:00:01,809 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 01:00:01,810 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 01:00:01,810 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 01:00:01,811 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 01:00:01,811 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 01:00:01,812 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 01:00:01,812 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 01:00:01,830 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 01:00:01,836 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 01:00:01,838 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 01:00:01,839 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 01:00:01,839 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 01:00:01,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum10_true-unreach-call_true-termination.i [2018-01-30 01:00:01,903 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 01:00:01,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-30 01:00:01,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 01:00:01,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 01:00:01,908 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 01:00:01,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 01:00:01" (1/1) ... [2018-01-30 01:00:01,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563b4aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:01, skipping insertion in model container [2018-01-30 01:00:01,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 01:00:01" (1/1) ... [2018-01-30 01:00:01,919 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 01:00:01,929 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 01:00:02,000 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 01:00:02,014 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 01:00:02,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02 WrapperNode [2018-01-30 01:00:02,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 01:00:02,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 01:00:02,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 01:00:02,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 01:00:02,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (1/1) ... [2018-01-30 01:00:02,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (1/1) ... [2018-01-30 01:00:02,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (1/1) ... [2018-01-30 01:00:02,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (1/1) ... [2018-01-30 01:00:02,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (1/1) ... [2018-01-30 01:00:02,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (1/1) ... [2018-01-30 01:00:02,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (1/1) ... [2018-01-30 01:00:02,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 01:00:02,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 01:00:02,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 01:00:02,037 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 01:00:02,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (1/1) ... No working directory specified, using /home/daniel/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 [2018-01-30 01:00:02,079 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 01:00:02,079 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 01:00:02,079 INFO L136 BoogieDeclarations]: Found implementation of procedure sum [2018-01-30 01:00:02,079 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 01:00:02,079 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 01:00:02,079 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 01:00:02,079 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 01:00:02,079 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 01:00:02,079 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 01:00:02,080 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 01:00:02,080 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 01:00:02,080 INFO L128 BoogieDeclarations]: Found specification of procedure sum [2018-01-30 01:00:02,080 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 01:00:02,080 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 01:00:02,080 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 01:00:02,426 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 01:00:02,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:00:02 BoogieIcfgContainer [2018-01-30 01:00:02,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 01:00:02,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 01:00:02,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 01:00:02,429 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 01:00:02,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 01:00:01" (1/3) ... [2018-01-30 01:00:02,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7749be5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 01:00:02, skipping insertion in model container [2018-01-30 01:00:02,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:02" (2/3) ... [2018-01-30 01:00:02,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7749be5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 01:00:02, skipping insertion in model container [2018-01-30 01:00:02,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:00:02" (3/3) ... [2018-01-30 01:00:02,431 INFO L107 eAbstractionObserver]: Analyzing ICFG sum10_true-unreach-call_true-termination.i [2018-01-30 01:00:02,436 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 01:00:02,440 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 01:00:02,465 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 01:00:02,465 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 01:00:02,465 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 01:00:02,465 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 01:00:02,465 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 01:00:02,465 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 01:00:02,465 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 01:00:02,465 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 01:00:02,466 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 01:00:02,475 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-01-30 01:00:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-30 01:00:02,480 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:02,480 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:02,481 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-30 01:00:02,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1274758379, now seen corresponding path program 1 times [2018-01-30 01:00:02,484 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:02,484 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:02,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:02,517 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:02,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:02,547 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-30 01:00:02,600 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:00:02,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 01:00:02,601 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 01:00:02,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 01:00:02,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 01:00:02,610 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2018-01-30 01:00:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:02,626 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2018-01-30 01:00:02,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 01:00:02,627 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 67 [2018-01-30 01:00:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:02,632 INFO L225 Difference]: With dead ends: 136 [2018-01-30 01:00:02,632 INFO L226 Difference]: Without dead ends: 71 [2018-01-30 01:00:02,634 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 01:00:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-30 01:00:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-30 01:00:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-30 01:00:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-01-30 01:00:02,659 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 67 [2018-01-30 01:00:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:02,659 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-01-30 01:00:02,659 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 01:00:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-01-30 01:00:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-30 01:00:02,756 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:02,756 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:02,756 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-30 01:00:02,756 INFO L82 PathProgramCache]: Analyzing trace with hash -780571542, now seen corresponding path program 1 times [2018-01-30 01:00:02,756 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:02,757 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:02,757 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:02,757 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:02,757 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:02,769 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-30 01:00:02,845 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:00:02,845 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 01:00:02,846 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 01:00:02,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 01:00:02,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 01:00:02,846 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 3 states. [2018-01-30 01:00:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:02,932 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2018-01-30 01:00:02,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 01:00:02,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-01-30 01:00:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:02,934 INFO L225 Difference]: With dead ends: 129 [2018-01-30 01:00:02,934 INFO L226 Difference]: Without dead ends: 78 [2018-01-30 01:00:02,934 INFO L553 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 [2018-01-30 01:00:02,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-30 01:00:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2018-01-30 01:00:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-30 01:00:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-01-30 01:00:02,939 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 72 [2018-01-30 01:00:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:02,939 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-01-30 01:00:02,939 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 01:00:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-01-30 01:00:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-30 01:00:02,940 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:02,941 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 01:00:02,941 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-30 01:00:02,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1544788435, now seen corresponding path program 1 times [2018-01-30 01:00:02,941 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:02,941 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:02,942 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:02,942 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:02,942 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:02,951 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-30 01:00:03,143 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:03,143 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:03,157 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:03,194 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-30 01:00:03,323 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 01:00:03,324 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 01:00:03,324 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 01:00:03,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 01:00:03,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 01:00:03,324 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 6 states. [2018-01-30 01:00:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:03,569 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-30 01:00:03,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 01:00:03,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-01-30 01:00:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:03,570 INFO L225 Difference]: With dead ends: 144 [2018-01-30 01:00:03,570 INFO L226 Difference]: Without dead ends: 93 [2018-01-30 01:00:03,571 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-30 01:00:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-30 01:00:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2018-01-30 01:00:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-30 01:00:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-01-30 01:00:03,575 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2018-01-30 01:00:03,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:03,575 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-01-30 01:00:03,575 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 01:00:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-01-30 01:00:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-30 01:00:03,576 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:03,576 INFO L350 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 01:00:03,576 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-30 01:00:03,576 INFO L82 PathProgramCache]: Analyzing trace with hash 278598597, now seen corresponding path program 1 times [2018-01-30 01:00:03,576 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:03,576 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:03,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:03,577 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:03,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:03,597 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-01-30 01:00:03,702 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:03,702 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:03,707 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:03,756 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-30 01:00:03,829 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 01:00:03,829 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 01:00:03,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 01:00:03,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 01:00:03,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 01:00:03,830 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-01-30 01:00:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:03,965 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2018-01-30 01:00:03,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 01:00:03,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-30 01:00:03,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:03,966 INFO L225 Difference]: With dead ends: 155 [2018-01-30 01:00:03,966 INFO L226 Difference]: Without dead ends: 103 [2018-01-30 01:00:03,967 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-30 01:00:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-30 01:00:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2018-01-30 01:00:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-30 01:00:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-01-30 01:00:03,975 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 112 [2018-01-30 01:00:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:03,975 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-01-30 01:00:03,975 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 01:00:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-01-30 01:00:03,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-30 01:00:03,976 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:03,976 INFO L350 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 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] [2018-01-30 01:00:03,977 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-30 01:00:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1429723589, now seen corresponding path program 1 times [2018-01-30 01:00:03,977 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:03,977 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:03,977 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:03,978 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:03,978 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:03,991 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-30 01:00:04,065 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:04,065 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:04,071 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:04,115 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-01-30 01:00:04,391 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:04,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-30 01:00:04,391 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 01:00:04,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 01:00:04,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-30 01:00:04,392 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 10 states. [2018-01-30 01:00:04,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:04,563 INFO L93 Difference]: Finished difference Result 182 states and 191 transitions. [2018-01-30 01:00:04,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 01:00:04,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2018-01-30 01:00:04,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:04,565 INFO L225 Difference]: With dead ends: 182 [2018-01-30 01:00:04,565 INFO L226 Difference]: Without dead ends: 119 [2018-01-30 01:00:04,565 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-30 01:00:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-30 01:00:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2018-01-30 01:00:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-30 01:00:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2018-01-30 01:00:04,569 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 144 [2018-01-30 01:00:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:04,569 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2018-01-30 01:00:04,569 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 01:00:04,569 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2018-01-30 01:00:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-30 01:00:04,570 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:04,571 INFO L350 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 01:00:04,571 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-30 01:00:04,571 INFO L82 PathProgramCache]: Analyzing trace with hash 918434213, now seen corresponding path program 2 times [2018-01-30 01:00:04,571 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:04,571 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:04,571 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:04,572 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:04,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:04,589 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-01-30 01:00:04,678 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:04,678 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:04,683 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:00:04,694 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:04,716 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:04,729 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:04,732 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-30 01:00:04,861 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:04,861 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-30 01:00:04,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 01:00:04,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 01:00:04,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-30 01:00:04,862 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 14 states. [2018-01-30 01:00:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:05,085 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2018-01-30 01:00:05,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 01:00:05,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-30 01:00:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:05,087 INFO L225 Difference]: With dead ends: 206 [2018-01-30 01:00:05,087 INFO L226 Difference]: Without dead ends: 135 [2018-01-30 01:00:05,088 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-30 01:00:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-30 01:00:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-30 01:00:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-30 01:00:05,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2018-01-30 01:00:05,093 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 160 [2018-01-30 01:00:05,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:05,094 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2018-01-30 01:00:05,094 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 01:00:05,094 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2018-01-30 01:00:05,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-30 01:00:05,095 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:05,096 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 01:00:05,096 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-30 01:00:05,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1059719273, now seen corresponding path program 3 times [2018-01-30 01:00:05,096 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:05,096 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:05,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:05,097 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:05,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:05,112 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2018-01-30 01:00:05,210 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:05,210 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:05,215 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:00:05,225 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:05,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:05,239 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:05,251 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:05,252 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:05,255 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 188 proven. 12 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-01-30 01:00:05,306 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:05,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-30 01:00:05,306 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 01:00:05,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 01:00:05,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 01:00:05,306 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 9 states. [2018-01-30 01:00:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:05,380 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-01-30 01:00:05,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 01:00:05,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 192 [2018-01-30 01:00:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:05,381 INFO L225 Difference]: With dead ends: 180 [2018-01-30 01:00:05,381 INFO L226 Difference]: Without dead ends: 138 [2018-01-30 01:00:05,381 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-30 01:00:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-30 01:00:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-01-30 01:00:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-30 01:00:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2018-01-30 01:00:05,387 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 192 [2018-01-30 01:00:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:05,388 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2018-01-30 01:00:05,388 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 01:00:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2018-01-30 01:00:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-30 01:00:05,390 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:05,390 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:05,390 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-30 01:00:05,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1802943502, now seen corresponding path program 4 times [2018-01-30 01:00:05,390 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:05,390 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:05,391 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:05,391 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:05,391 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:05,405 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-30 01:00:05,596 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:05,596 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:05,601 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:00:05,624 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:05,627 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-30 01:00:05,671 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:05,671 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-30 01:00:05,671 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 01:00:05,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 01:00:05,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 01:00:05,672 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2018-01-30 01:00:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:05,837 INFO L93 Difference]: Finished difference Result 233 states and 241 transitions. [2018-01-30 01:00:05,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 01:00:05,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2018-01-30 01:00:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:05,837 INFO L225 Difference]: With dead ends: 233 [2018-01-30 01:00:05,838 INFO L226 Difference]: Without dead ends: 146 [2018-01-30 01:00:05,838 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-30 01:00:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-30 01:00:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-01-30 01:00:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-30 01:00:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2018-01-30 01:00:05,842 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 200 [2018-01-30 01:00:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:05,842 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2018-01-30 01:00:05,842 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 01:00:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2018-01-30 01:00:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-30 01:00:05,844 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:05,844 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:05,844 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-30 01:00:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1334925687, now seen corresponding path program 5 times [2018-01-30 01:00:05,844 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:05,844 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:05,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:05,845 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:05,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:05,867 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2018-01-30 01:00:06,151 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:06,151 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:06,156 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:00:06,164 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:06,174 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:06,179 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:06,185 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:06,186 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:06,189 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 182 proven. 30 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-01-30 01:00:06,277 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:06,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-30 01:00:06,278 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 01:00:06,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 01:00:06,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-30 01:00:06,278 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 20 states. [2018-01-30 01:00:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:06,644 INFO L93 Difference]: Finished difference Result 254 states and 266 transitions. [2018-01-30 01:00:06,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 01:00:06,654 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-01-30 01:00:06,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:06,654 INFO L225 Difference]: With dead ends: 254 [2018-01-30 01:00:06,655 INFO L226 Difference]: Without dead ends: 167 [2018-01-30 01:00:06,655 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 01:00:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-30 01:00:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2018-01-30 01:00:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-30 01:00:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2018-01-30 01:00:06,659 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 208 [2018-01-30 01:00:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:06,659 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2018-01-30 01:00:06,659 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 01:00:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2018-01-30 01:00:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-30 01:00:06,661 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:06,661 INFO L350 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:06,661 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-30 01:00:06,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1311007081, now seen corresponding path program 6 times [2018-01-30 01:00:06,662 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:06,662 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:06,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:06,662 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:06,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:06,674 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-30 01:00:06,809 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:06,809 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:06,814 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 01:00:06,824 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:06,827 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:06,830 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:06,834 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:06,840 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:06,857 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:06,866 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:06,867 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:06,870 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 454 proven. 56 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-01-30 01:00:07,013 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:07,014 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-01-30 01:00:07,014 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 01:00:07,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 01:00:07,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2018-01-30 01:00:07,015 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 24 states. [2018-01-30 01:00:07,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:07,301 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2018-01-30 01:00:07,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-30 01:00:07,309 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 240 [2018-01-30 01:00:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:07,310 INFO L225 Difference]: With dead ends: 278 [2018-01-30 01:00:07,310 INFO L226 Difference]: Without dead ends: 183 [2018-01-30 01:00:07,311 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 01:00:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-30 01:00:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-01-30 01:00:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-30 01:00:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2018-01-30 01:00:07,317 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 240 [2018-01-30 01:00:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:07,317 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2018-01-30 01:00:07,317 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 01:00:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2018-01-30 01:00:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-30 01:00:07,318 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:07,318 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:07,318 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-30 01:00:07,318 INFO L82 PathProgramCache]: Analyzing trace with hash 438292315, now seen corresponding path program 7 times [2018-01-30 01:00:07,318 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:07,318 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:07,319 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:07,319 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:07,319 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:07,341 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:00:07,594 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:07,594 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:07,598 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:07,638 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:00:07,733 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:07,733 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 01:00:07,733 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 01:00:07,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 01:00:07,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 01:00:07,734 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 19 states. [2018-01-30 01:00:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:08,174 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2018-01-30 01:00:08,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 01:00:08,177 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 272 [2018-01-30 01:00:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:08,177 INFO L225 Difference]: With dead ends: 289 [2018-01-30 01:00:08,177 INFO L226 Difference]: Without dead ends: 186 [2018-01-30 01:00:08,178 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 01:00:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-30 01:00:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-30 01:00:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-30 01:00:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2018-01-30 01:00:08,181 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 272 [2018-01-30 01:00:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:08,181 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2018-01-30 01:00:08,182 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 01:00:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2018-01-30 01:00:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-01-30 01:00:08,183 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:08,183 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 9, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:08,183 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-30 01:00:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1690774468, now seen corresponding path program 8 times [2018-01-30 01:00:08,183 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:08,183 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:08,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:08,184 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:08,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:08,196 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:00:08,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:08,796 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:08,801 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:00:08,812 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:08,831 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:08,834 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:08,837 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:00:08,926 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:08,927 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 01:00:08,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 01:00:08,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 01:00:08,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 01:00:08,927 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 21 states. [2018-01-30 01:00:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:09,116 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-01-30 01:00:09,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 01:00:09,126 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 280 [2018-01-30 01:00:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:09,127 INFO L225 Difference]: With dead ends: 297 [2018-01-30 01:00:09,127 INFO L226 Difference]: Without dead ends: 194 [2018-01-30 01:00:09,128 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 01:00:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-30 01:00:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2018-01-30 01:00:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-30 01:00:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2018-01-30 01:00:09,131 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 280 [2018-01-30 01:00:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:09,131 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2018-01-30 01:00:09,131 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 01:00:09,131 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2018-01-30 01:00:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-01-30 01:00:09,132 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:09,132 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:09,132 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-30 01:00:09,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2140926163, now seen corresponding path program 9 times [2018-01-30 01:00:09,133 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:09,133 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:09,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:09,133 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:09,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:09,145 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-01-30 01:00:09,597 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:09,597 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:09,602 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:00:09,613 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:09,628 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:09,638 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:09,646 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:09,672 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:09,682 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:09,685 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 460 proven. 30 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-01-30 01:00:09,812 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:09,812 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-30 01:00:09,813 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 01:00:09,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 01:00:09,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-30 01:00:09,813 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand 28 states. [2018-01-30 01:00:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:10,149 INFO L93 Difference]: Finished difference Result 313 states and 322 transitions. [2018-01-30 01:00:10,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 01:00:10,149 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 288 [2018-01-30 01:00:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:10,150 INFO L225 Difference]: With dead ends: 313 [2018-01-30 01:00:10,150 INFO L226 Difference]: Without dead ends: 210 [2018-01-30 01:00:10,151 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 01:00:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-30 01:00:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2018-01-30 01:00:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-30 01:00:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2018-01-30 01:00:10,154 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 288 [2018-01-30 01:00:10,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:10,155 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2018-01-30 01:00:10,155 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 01:00:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2018-01-30 01:00:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-30 01:00:10,156 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:10,156 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:10,156 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-30 01:00:10,156 INFO L82 PathProgramCache]: Analyzing trace with hash -584748275, now seen corresponding path program 10 times [2018-01-30 01:00:10,156 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:10,156 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:10,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:10,157 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:10,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:10,169 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2018-01-30 01:00:10,770 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:10,770 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:10,774 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:00:10,803 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:10,806 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 454 proven. 90 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2018-01-30 01:00:10,866 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:10,867 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-30 01:00:10,867 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 01:00:10,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 01:00:10,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 01:00:10,867 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand 15 states. [2018-01-30 01:00:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:10,968 INFO L93 Difference]: Finished difference Result 328 states and 338 transitions. [2018-01-30 01:00:10,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 01:00:10,976 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 304 [2018-01-30 01:00:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:10,976 INFO L225 Difference]: With dead ends: 328 [2018-01-30 01:00:10,976 INFO L226 Difference]: Without dead ends: 218 [2018-01-30 01:00:10,977 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-30 01:00:10,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-30 01:00:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2018-01-30 01:00:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-30 01:00:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2018-01-30 01:00:10,980 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 304 [2018-01-30 01:00:10,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:10,980 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2018-01-30 01:00:10,980 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 01:00:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2018-01-30 01:00:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-01-30 01:00:10,981 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:10,981 INFO L350 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:10,981 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-30 01:00:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash -112898666, now seen corresponding path program 11 times [2018-01-30 01:00:10,981 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:10,982 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:10,982 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:10,982 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:10,982 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:10,994 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 766 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-01-30 01:00:11,363 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:11,363 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:11,368 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:00:11,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,386 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,387 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,390 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,394 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,398 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,404 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,416 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,442 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:11,443 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:11,446 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 638 proven. 132 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2018-01-30 01:00:11,519 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:11,520 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-30 01:00:11,520 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 01:00:11,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 01:00:11,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 01:00:11,520 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand 17 states. [2018-01-30 01:00:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:11,661 INFO L93 Difference]: Finished difference Result 344 states and 354 transitions. [2018-01-30 01:00:11,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 01:00:11,661 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 328 [2018-01-30 01:00:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:11,662 INFO L225 Difference]: With dead ends: 344 [2018-01-30 01:00:11,662 INFO L226 Difference]: Without dead ends: 226 [2018-01-30 01:00:11,662 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-30 01:00:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-30 01:00:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 221. [2018-01-30 01:00:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-01-30 01:00:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2018-01-30 01:00:11,665 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 328 [2018-01-30 01:00:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:11,665 INFO L432 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2018-01-30 01:00:11,665 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 01:00:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2018-01-30 01:00:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-01-30 01:00:11,667 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:11,667 INFO L350 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:11,667 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-30 01:00:11,667 INFO L82 PathProgramCache]: Analyzing trace with hash 189324575, now seen corresponding path program 12 times [2018-01-30 01:00:11,667 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:11,667 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:11,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:11,668 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:11,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:11,680 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 1032 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-01-30 01:00:11,968 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:11,968 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:11,973 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 01:00:11,986 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:11,996 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,009 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,020 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,036 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,059 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,075 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,125 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,156 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,243 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,369 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:12,371 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:12,375 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 854 proven. 182 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-01-30 01:00:12,438 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:12,438 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 01:00:12,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 01:00:12,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 01:00:12,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 01:00:12,439 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand 19 states. [2018-01-30 01:00:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:12,561 INFO L93 Difference]: Finished difference Result 360 states and 370 transitions. [2018-01-30 01:00:12,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 01:00:12,572 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 352 [2018-01-30 01:00:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:12,573 INFO L225 Difference]: With dead ends: 360 [2018-01-30 01:00:12,573 INFO L226 Difference]: Without dead ends: 234 [2018-01-30 01:00:12,574 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 01:00:12,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-01-30 01:00:12,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2018-01-30 01:00:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-30 01:00:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2018-01-30 01:00:12,577 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 352 [2018-01-30 01:00:12,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:12,577 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2018-01-30 01:00:12,577 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 01:00:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2018-01-30 01:00:12,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-30 01:00:12,578 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:12,578 INFO L350 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:12,578 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-30 01:00:12,578 INFO L82 PathProgramCache]: Analyzing trace with hash 830808488, now seen corresponding path program 13 times [2018-01-30 01:00:12,578 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:12,578 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:12,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:12,579 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:12,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:12,591 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 0 proven. 1338 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-01-30 01:00:12,921 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:12,922 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:12,928 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:12,970 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 1102 proven. 240 refuted. 0 times theorem prover too weak. 1476 trivial. 0 not checked. [2018-01-30 01:00:13,359 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:13,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 01:00:13,359 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 01:00:13,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 01:00:13,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 01:00:13,360 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 21 states. [2018-01-30 01:00:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:13,834 INFO L93 Difference]: Finished difference Result 376 states and 386 transitions. [2018-01-30 01:00:13,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 01:00:13,846 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 376 [2018-01-30 01:00:13,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:13,846 INFO L225 Difference]: With dead ends: 376 [2018-01-30 01:00:13,847 INFO L226 Difference]: Without dead ends: 242 [2018-01-30 01:00:13,847 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 01:00:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-30 01:00:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 237. [2018-01-30 01:00:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-01-30 01:00:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2018-01-30 01:00:13,851 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 376 [2018-01-30 01:00:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:13,851 INFO L432 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2018-01-30 01:00:13,851 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 01:00:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2018-01-30 01:00:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-01-30 01:00:13,852 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:13,852 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:13,852 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-30 01:00:13,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1353770191, now seen corresponding path program 14 times [2018-01-30 01:00:13,853 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:13,853 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:13,853 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:13,853 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:13,853 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:13,868 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 0 proven. 1684 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2018-01-30 01:00:14,241 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:14,241 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:14,249 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:00:14,261 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:14,288 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:14,293 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:14,296 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 1382 proven. 306 refuted. 0 times theorem prover too weak. 1748 trivial. 0 not checked. [2018-01-30 01:00:14,400 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:14,400 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-30 01:00:14,400 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 01:00:14,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 01:00:14,401 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-30 01:00:14,401 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2018-01-30 01:00:14,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:14,834 INFO L93 Difference]: Finished difference Result 387 states and 397 transitions. [2018-01-30 01:00:14,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 01:00:14,839 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 400 [2018-01-30 01:00:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:14,840 INFO L225 Difference]: With dead ends: 387 [2018-01-30 01:00:14,840 INFO L226 Difference]: Without dead ends: 245 [2018-01-30 01:00:14,840 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 01:00:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-30 01:00:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-01-30 01:00:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-30 01:00:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 249 transitions. [2018-01-30 01:00:14,844 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 249 transitions. Word has length 400 [2018-01-30 01:00:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:14,844 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 249 transitions. [2018-01-30 01:00:14,844 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 01:00:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 249 transitions. [2018-01-30 01:00:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-01-30 01:00:14,846 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:14,846 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:14,846 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-30 01:00:14,846 INFO L82 PathProgramCache]: Analyzing trace with hash -319043142, now seen corresponding path program 15 times [2018-01-30 01:00:14,846 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:14,846 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:14,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:14,847 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:14,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:14,865 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4126 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-30 01:00:15,431 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:15,431 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:15,440 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 01:00:15,454 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:15,460 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:15,466 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:15,474 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:15,488 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:15,523 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 01:00:15,524 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:15,527 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4126 backedges. 1700 proven. 56 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-30 01:00:15,661 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:15,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-30 01:00:15,662 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 01:00:15,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 01:00:15,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 01:00:15,662 INFO L87 Difference]: Start difference. First operand 245 states and 249 transitions. Second operand 13 states. [2018-01-30 01:00:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:16,323 INFO L93 Difference]: Finished difference Result 356 states and 361 transitions. [2018-01-30 01:00:16,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 01:00:16,323 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 424 [2018-01-30 01:00:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:16,324 INFO L225 Difference]: With dead ends: 356 [2018-01-30 01:00:16,324 INFO L226 Difference]: Without dead ends: 258 [2018-01-30 01:00:16,324 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-30 01:00:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-01-30 01:00:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2018-01-30 01:00:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-30 01:00:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2018-01-30 01:00:16,328 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 424 [2018-01-30 01:00:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:16,328 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2018-01-30 01:00:16,328 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 01:00:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2018-01-30 01:00:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-01-30 01:00:16,329 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:16,330 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:16,330 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-30 01:00:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1421048113, now seen corresponding path program 16 times [2018-01-30 01:00:16,330 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:16,330 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:16,330 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:16,331 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:16,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:16,344 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-30 01:00:16,892 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:16,892 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:16,897 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 01:00:16,942 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:16,945 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 1700 proven. 90 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-30 01:00:17,039 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:17,040 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-30 01:00:17,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 01:00:17,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 01:00:17,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 01:00:17,040 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand 15 states. [2018-01-30 01:00:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:17,238 INFO L93 Difference]: Finished difference Result 364 states and 369 transitions. [2018-01-30 01:00:17,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 01:00:17,238 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 432 [2018-01-30 01:00:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:17,239 INFO L225 Difference]: With dead ends: 364 [2018-01-30 01:00:17,239 INFO L226 Difference]: Without dead ends: 266 [2018-01-30 01:00:17,239 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-30 01:00:17,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-30 01:00:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 261. [2018-01-30 01:00:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-30 01:00:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 265 transitions. [2018-01-30 01:00:17,243 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 265 transitions. Word has length 432 [2018-01-30 01:00:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:17,243 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 265 transitions. [2018-01-30 01:00:17,243 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 01:00:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 265 transitions. [2018-01-30 01:00:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-01-30 01:00:17,244 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:17,244 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:17,245 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-30 01:00:17,245 INFO L82 PathProgramCache]: Analyzing trace with hash -920927832, now seen corresponding path program 17 times [2018-01-30 01:00:17,245 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:17,245 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:17,245 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:17,245 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:17,245 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:17,258 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4202 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-30 01:00:17,540 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:17,540 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:17,545 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 01:00:17,557 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,567 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,570 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,573 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,576 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,580 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,586 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,634 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,656 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,711 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,838 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:17,840 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:17,844 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4202 backedges. 1700 proven. 132 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-30 01:00:17,963 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:17,963 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-30 01:00:17,963 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 01:00:17,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 01:00:17,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 01:00:17,963 INFO L87 Difference]: Start difference. First operand 261 states and 265 transitions. Second operand 17 states. [2018-01-30 01:00:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:18,059 INFO L93 Difference]: Finished difference Result 372 states and 377 transitions. [2018-01-30 01:00:18,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 01:00:18,060 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 440 [2018-01-30 01:00:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:18,060 INFO L225 Difference]: With dead ends: 372 [2018-01-30 01:00:18,060 INFO L226 Difference]: Without dead ends: 274 [2018-01-30 01:00:18,061 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-30 01:00:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-30 01:00:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2018-01-30 01:00:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-01-30 01:00:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 273 transitions. [2018-01-30 01:00:18,064 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 273 transitions. Word has length 440 [2018-01-30 01:00:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:18,064 INFO L432 AbstractCegarLoop]: Abstraction has 269 states and 273 transitions. [2018-01-30 01:00:18,064 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 01:00:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 273 transitions. [2018-01-30 01:00:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-30 01:00:18,066 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:18,066 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:18,066 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-30 01:00:18,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2138332385, now seen corresponding path program 18 times [2018-01-30 01:00:18,066 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:18,066 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:18,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:18,067 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:18,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:18,080 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4252 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-30 01:00:18,415 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:18,415 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:18,420 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 01:00:18,434 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,443 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,461 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,469 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,483 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,496 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,512 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,541 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,583 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,615 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,671 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:18,877 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:19,129 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 01:00:19,133 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:19,139 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4252 backedges. 1700 proven. 182 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-30 01:00:19,278 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:19,278 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 01:00:19,278 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 01:00:19,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 01:00:19,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 01:00:19,278 INFO L87 Difference]: Start difference. First operand 269 states and 273 transitions. Second operand 19 states. [2018-01-30 01:00:19,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:19,728 INFO L93 Difference]: Finished difference Result 380 states and 385 transitions. [2018-01-30 01:00:19,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 01:00:19,728 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 448 [2018-01-30 01:00:19,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:19,729 INFO L225 Difference]: With dead ends: 380 [2018-01-30 01:00:19,729 INFO L226 Difference]: Without dead ends: 282 [2018-01-30 01:00:19,730 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 01:00:19,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-30 01:00:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 277. [2018-01-30 01:00:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-01-30 01:00:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-01-30 01:00:19,733 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 448 [2018-01-30 01:00:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:19,734 INFO L432 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-01-30 01:00:19,734 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 01:00:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-01-30 01:00:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-01-30 01:00:19,735 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:19,735 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:19,735 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-30 01:00:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1784290710, now seen corresponding path program 19 times [2018-01-30 01:00:19,736 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:19,736 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:19,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:19,736 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 01:00:19,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:19,749 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4310 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 4070 trivial. 0 not checked. [2018-01-30 01:00:20,603 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:20,603 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 01:00:20,608 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:20,665 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4310 backedges. 1700 proven. 240 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2018-01-30 01:00:21,031 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:21,031 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 01:00:21,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 01:00:21,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 01:00:21,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 01:00:21,032 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 21 states. [2018-01-30 01:00:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:21,178 INFO L93 Difference]: Finished difference Result 383 states and 388 transitions. [2018-01-30 01:00:21,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 01:00:21,179 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 456 [2018-01-30 01:00:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:21,179 INFO L225 Difference]: With dead ends: 383 [2018-01-30 01:00:21,180 INFO L226 Difference]: Without dead ends: 285 [2018-01-30 01:00:21,180 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 01:00:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-01-30 01:00:21,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-01-30 01:00:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-30 01:00:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2018-01-30 01:00:21,183 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 456 [2018-01-30 01:00:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:21,184 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 289 transitions. [2018-01-30 01:00:21,184 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 01:00:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 289 transitions. [2018-01-30 01:00:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-01-30 01:00:21,186 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:21,186 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:21,186 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-30 01:00:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash 786313485, now seen corresponding path program 20 times [2018-01-30 01:00:21,186 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:21,186 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:21,186 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:21,186 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:21,187 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:21,488 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-30 01:01:12,210 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1423) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$MixedLAInterpolator.convert(Interpolator.java:1279) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:125) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:121) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:73) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:239) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.mixedPivotLA(Interpolator.java:1469) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.combine(Interpolator.java:357) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$2(Interpolator.java:326) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$CombineInterpolants.walk(Interpolator.java:153) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:396) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-30 01:01:12,213 INFO L168 Benchmark]: Toolchain (without parser) took 70309.70 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 115.5 MB in the beginning and 283.7 MB in the end (delta: -168.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 5.3 GB. [2018-01-30 01:01:12,214 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 150.5 MB. Free memory is still 120.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 01:01:12,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 113.53 ms. Allocated memory is still 150.5 MB. Free memory was 115.3 MB in the beginning and 106.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-30 01:01:12,214 INFO L168 Benchmark]: Boogie Preprocessor took 18.93 ms. Allocated memory is still 150.5 MB. Free memory was 106.7 MB in the beginning and 105.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-30 01:01:12,214 INFO L168 Benchmark]: RCFGBuilder took 389.52 ms. Allocated memory is still 150.5 MB. Free memory was 105.0 MB in the beginning and 86.2 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. [2018-01-30 01:01:12,214 INFO L168 Benchmark]: TraceAbstraction took 69785.41 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 86.0 MB in the beginning and 283.7 MB in the end (delta: -197.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 5.3 GB. [2018-01-30 01:01:12,215 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 150.5 MB. Free memory is still 120.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 113.53 ms. Allocated memory is still 150.5 MB. Free memory was 115.3 MB in the beginning and 106.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 18.93 ms. Allocated memory is still 150.5 MB. Free memory was 106.7 MB in the beginning and 105.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 389.52 ms. Allocated memory is still 150.5 MB. Free memory was 105.0 MB in the beginning and 86.2 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 69785.41 ms. Allocated memory was 150.5 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 86.0 MB in the beginning and 283.7 MB in the end (delta: -197.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1423) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum10_true-unreach-call_true-termination.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-30_01-01-12-219.csv Completed graceful shutdown