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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_27_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 03:08:12,386 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 03:08:12,392 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 03:08:12,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 03:08:12,405 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 03:08:12,406 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 03:08:12,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 03:08:12,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 03:08:12,408 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 03:08:12,409 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 03:08:12,409 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 03:08:12,409 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 03:08:12,410 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 03:08:12,410 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 03:08:12,411 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 03:08:12,412 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 03:08:12,413 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 03:08:12,414 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 03:08:12,414 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 03:08:12,415 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 03:08:12,416 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-30 03:08:12,416 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-30 03:08:12,417 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-30 03:08:12,417 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-30 03:08:12,418 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-30 03:08:12,418 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-30 03:08:12,418 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-30 03:08:12,419 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-30 03:08:12,419 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-30 03:08:12,419 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 03:08:12,419 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 03:08:12,420 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 03:08:12,427 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 03:08:12,428 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 03:08:12,429 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 03:08:12,429 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 03:08:12,429 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 03:08:12,429 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 03:08:12,429 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 03:08:12,430 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 03:08:12,430 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 03:08:12,431 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 03:08:12,431 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 03:08:12,431 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 03:08:12,431 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 03:08:12,431 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 03:08:12,431 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 03:08:12,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 03:08:12,431 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 03:08:12,432 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 03:08:12,432 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 03:08:12,432 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 03:08:12,432 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 03:08:12,433 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 03:08:12,433 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 03:08:12,433 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 03:08:12,433 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 03:08:12,433 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 03:08:12,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 03:08:12,469 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 03:08:12,471 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 03:08:12,472 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 03:08:12,472 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 03:08:12,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_27_true-unreach-call_ground.i [2018-01-30 03:08:12,534 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 03:08:12,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 03:08:12,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 03:08:12,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 03:08:12,539 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 03:08:12,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e6b3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12, skipping insertion in model container [2018-01-30 03:08:12,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,550 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 03:08:12,559 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 03:08:12,627 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 03:08:12,635 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 03:08:12,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12 WrapperNode [2018-01-30 03:08:12,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 03:08:12,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 03:08:12,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 03:08:12,638 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 03:08:12,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 03:08:12,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 03:08:12,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 03:08:12,656 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 03:08:12,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (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 03:08:12,694 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 03:08:12,694 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 03:08:12,694 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 03:08:12,694 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 03:08:12,694 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 03:08:12,694 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 03:08:12,694 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 03:08:12,694 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 03:08:12,695 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 03:08:12,923 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 03:08:12,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:08:12 BoogieIcfgContainer [2018-01-30 03:08:12,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 03:08:12,924 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 03:08:12,924 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 03:08:12,925 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 03:08:12,927 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:08:12" (1/1) ... [2018-01-30 03:08:12,929 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 03:08:12,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 03:08:12 BasicIcfg [2018-01-30 03:08:12,935 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 03:08:12,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 03:08:12,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 03:08:12,937 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 03:08:12,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 03:08:12" (1/4) ... [2018-01-30 03:08:12,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4069af3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 03:08:12, skipping insertion in model container [2018-01-30 03:08:12,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:08:12" (2/4) ... [2018-01-30 03:08:12,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4069af3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 03:08:12, skipping insertion in model container [2018-01-30 03:08:12,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:08:12" (3/4) ... [2018-01-30 03:08:12,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4069af3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 03:08:12, skipping insertion in model container [2018-01-30 03:08:12,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 03:08:12" (4/4) ... [2018-01-30 03:08:12,939 INFO L107 eAbstractionObserver]: Analyzing ICFG sanfoundry_27_true-unreach-call_ground.ileft_unchanged_by_heapseparator [2018-01-30 03:08:12,944 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 03:08:12,949 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 03:08:12,973 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 03:08:12,973 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 03:08:12,973 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 03:08:12,973 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 03:08:12,973 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 03:08:12,973 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 03:08:12,973 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 03:08:12,973 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 03:08:12,974 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 03:08:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-30 03:08:12,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-30 03:08:12,986 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:12,986 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:12,986 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:12,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1723693716, now seen corresponding path program 1 times [2018-01-30 03:08:12,990 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:12,991 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:13,018 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,018 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:13,018 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:13,039 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:13,056 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 03:08:13,056 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 03:08:13,057 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 03:08:13,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 03:08:13,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 03:08:13,066 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-01-30 03:08:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:13,078 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2018-01-30 03:08:13,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 03:08:13,079 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-30 03:08:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:13,084 INFO L225 Difference]: With dead ends: 53 [2018-01-30 03:08:13,084 INFO L226 Difference]: Without dead ends: 29 [2018-01-30 03:08:13,086 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 03:08:13,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-30 03:08:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-01-30 03:08:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-30 03:08:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-01-30 03:08:13,106 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2018-01-30 03:08:13,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:13,107 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-01-30 03:08:13,107 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 03:08:13,107 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-01-30 03:08:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-30 03:08:13,107 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:13,107 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:13,107 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:13,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1992966801, now seen corresponding path program 1 times [2018-01-30 03:08:13,108 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:13,108 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:13,108 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,109 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:13,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:13,120 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:13,201 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 03:08:13,201 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 03:08:13,202 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 03:08:13,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 03:08:13,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 03:08:13,203 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 3 states. [2018-01-30 03:08:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:13,329 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-01-30 03:08:13,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 03:08:13,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-01-30 03:08:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:13,330 INFO L225 Difference]: With dead ends: 49 [2018-01-30 03:08:13,330 INFO L226 Difference]: Without dead ends: 35 [2018-01-30 03:08:13,331 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 03:08:13,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-30 03:08:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-01-30 03:08:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-30 03:08:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-01-30 03:08:13,334 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 18 [2018-01-30 03:08:13,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:13,334 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-01-30 03:08:13,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 03:08:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-01-30 03:08:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-30 03:08:13,334 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:13,335 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:13,335 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:13,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1325042789, now seen corresponding path program 1 times [2018-01-30 03:08:13,335 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:13,335 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:13,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:13,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:13,345 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:13,557 WARN L146 SmtUtils]: Spent 111ms on a formula simplification. DAG size of input: 21 DAG size of output 8 [2018-01-30 03:08:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 03:08:13,572 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 03:08:13,572 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-30 03:08:13,572 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 03:08:13,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 03:08:13,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 03:08:13,572 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2018-01-30 03:08:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:13,751 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2018-01-30 03:08:13,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 03:08:13,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-30 03:08:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:13,754 INFO L225 Difference]: With dead ends: 69 [2018-01-30 03:08:13,754 INFO L226 Difference]: Without dead ends: 57 [2018-01-30 03:08:13,754 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-30 03:08:13,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-30 03:08:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2018-01-30 03:08:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-30 03:08:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2018-01-30 03:08:13,761 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 24 [2018-01-30 03:08:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:13,762 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2018-01-30 03:08:13,762 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 03:08:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2018-01-30 03:08:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-30 03:08:13,762 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:13,762 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:13,763 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1451603844, now seen corresponding path program 1 times [2018-01-30 03:08:13,763 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:13,763 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:13,764 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,764 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:13,764 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:13,769 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:13,828 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:13,829 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 03:08:13,841 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:13,859 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:13,886 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:13,886 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 03:08:13,887 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 03:08:13,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 03:08:13,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 03:08:13,887 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2018-01-30 03:08:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:13,988 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2018-01-30 03:08:13,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 03:08:13,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-30 03:08:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:13,989 INFO L225 Difference]: With dead ends: 88 [2018-01-30 03:08:13,989 INFO L226 Difference]: Without dead ends: 65 [2018-01-30 03:08:13,990 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 03:08:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-30 03:08:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2018-01-30 03:08:13,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-30 03:08:13,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2018-01-30 03:08:13,994 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 25 [2018-01-30 03:08:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:13,994 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2018-01-30 03:08:13,994 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 03:08:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2018-01-30 03:08:13,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-30 03:08:13,995 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:13,995 INFO L350 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:13,995 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:13,995 INFO L82 PathProgramCache]: Analyzing trace with hash 775298374, now seen corresponding path program 1 times [2018-01-30 03:08:13,995 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:13,995 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:13,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:13,996 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:13,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:14,002 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:14,100 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:14,100 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 03:08:14,106 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:14,113 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:14,134 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:14,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-30 03:08:14,135 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 03:08:14,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 03:08:14,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-30 03:08:14,135 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 7 states. [2018-01-30 03:08:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:14,259 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2018-01-30 03:08:14,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 03:08:14,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-01-30 03:08:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:14,261 INFO L225 Difference]: With dead ends: 101 [2018-01-30 03:08:14,261 INFO L226 Difference]: Without dead ends: 78 [2018-01-30 03:08:14,261 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-30 03:08:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-30 03:08:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2018-01-30 03:08:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-30 03:08:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2018-01-30 03:08:14,266 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 31 [2018-01-30 03:08:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:14,266 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2018-01-30 03:08:14,266 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 03:08:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2018-01-30 03:08:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-30 03:08:14,267 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:14,267 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:14,267 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:14,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1634579088, now seen corresponding path program 2 times [2018-01-30 03:08:14,267 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:14,267 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:14,268 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:14,268 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:14,268 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:14,274 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:14,513 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:14,513 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 03:08:14,518 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:08:14,524 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:14,526 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:14,527 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:14,528 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:14,549 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:14,549 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-30 03:08:14,549 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 03:08:14,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 03:08:14,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 03:08:14,550 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 9 states. [2018-01-30 03:08:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:14,675 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2018-01-30 03:08:14,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 03:08:14,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-01-30 03:08:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:14,677 INFO L225 Difference]: With dead ends: 114 [2018-01-30 03:08:14,677 INFO L226 Difference]: Without dead ends: 91 [2018-01-30 03:08:14,677 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-30 03:08:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-30 03:08:14,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 84. [2018-01-30 03:08:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-01-30 03:08:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2018-01-30 03:08:14,681 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 37 [2018-01-30 03:08:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:14,681 INFO L432 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2018-01-30 03:08:14,682 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 03:08:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2018-01-30 03:08:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-30 03:08:14,682 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:14,682 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:14,683 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:14,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1517201498, now seen corresponding path program 3 times [2018-01-30 03:08:14,683 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:14,683 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:14,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:14,684 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:14,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:14,690 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:08:14,760 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:14,760 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 03:08:14,776 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:08:14,780 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:14,786 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:14,789 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:14,791 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:14,798 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:14,800 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-30 03:08:14,959 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 03:08:14,959 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2018-01-30 03:08:14,959 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 03:08:14,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 03:08:14,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-01-30 03:08:14,960 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 17 states. [2018-01-30 03:08:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:16,249 INFO L93 Difference]: Finished difference Result 157 states and 177 transitions. [2018-01-30 03:08:16,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-01-30 03:08:16,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 43 [2018-01-30 03:08:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:16,251 INFO L225 Difference]: With dead ends: 157 [2018-01-30 03:08:16,251 INFO L226 Difference]: Without dead ends: 134 [2018-01-30 03:08:16,252 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=737, Invalid=2569, Unknown=0, NotChecked=0, Total=3306 [2018-01-30 03:08:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-30 03:08:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 66. [2018-01-30 03:08:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-30 03:08:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2018-01-30 03:08:16,257 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 43 [2018-01-30 03:08:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:16,257 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2018-01-30 03:08:16,257 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 03:08:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2018-01-30 03:08:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-01-30 03:08:16,258 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:16,258 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:16,258 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash 557799270, now seen corresponding path program 1 times [2018-01-30 03:08:16,259 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:16,259 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:16,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:16,259 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:16,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:16,267 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:08:16,479 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:16,479 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 03:08:16,484 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:16,493 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-30 03:08:16,515 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:16,515 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-30 03:08:16,516 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 03:08:16,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 03:08:16,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 03:08:16,516 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 13 states. [2018-01-30 03:08:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:16,622 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2018-01-30 03:08:16,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 03:08:16,630 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2018-01-30 03:08:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:16,630 INFO L225 Difference]: With dead ends: 98 [2018-01-30 03:08:16,631 INFO L226 Difference]: Without dead ends: 77 [2018-01-30 03:08:16,631 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-30 03:08:16,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-30 03:08:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2018-01-30 03:08:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-30 03:08:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2018-01-30 03:08:16,635 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 58 [2018-01-30 03:08:16,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:16,635 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2018-01-30 03:08:16,635 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 03:08:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2018-01-30 03:08:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-01-30 03:08:16,636 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:16,636 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:16,636 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1794586224, now seen corresponding path program 2 times [2018-01-30 03:08:16,636 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:16,636 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:16,636 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:16,637 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:16,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:16,646 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 102 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:08:16,830 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:16,830 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 03:08:16,835 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:08:16,838 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:16,845 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:16,846 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:16,847 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-30 03:08:16,869 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:16,869 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-30 03:08:16,870 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 03:08:16,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 03:08:16,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 03:08:16,870 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 15 states. [2018-01-30 03:08:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:17,020 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2018-01-30 03:08:17,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 03:08:17,021 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2018-01-30 03:08:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:17,022 INFO L225 Difference]: With dead ends: 105 [2018-01-30 03:08:17,022 INFO L226 Difference]: Without dead ends: 84 [2018-01-30 03:08:17,022 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-30 03:08:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-30 03:08:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2018-01-30 03:08:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-01-30 03:08:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2018-01-30 03:08:17,029 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 64 [2018-01-30 03:08:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:17,029 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2018-01-30 03:08:17,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 03:08:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2018-01-30 03:08:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-01-30 03:08:17,030 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:17,030 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:17,030 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:17,032 INFO L82 PathProgramCache]: Analyzing trace with hash -301324806, now seen corresponding path program 3 times [2018-01-30 03:08:17,032 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:17,032 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:17,033 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:17,033 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:17,033 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:17,040 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 2 proven. 140 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:08:17,143 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:17,143 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 03:08:17,147 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:08:17,151 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:17,153 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:17,154 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:17,155 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:17,156 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:17,158 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-01-30 03:08:17,301 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:17,301 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2018-01-30 03:08:17,301 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 03:08:17,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 03:08:17,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2018-01-30 03:08:17,301 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 27 states. [2018-01-30 03:08:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:18,410 INFO L93 Difference]: Finished difference Result 188 states and 215 transitions. [2018-01-30 03:08:18,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-30 03:08:18,411 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 70 [2018-01-30 03:08:18,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:18,412 INFO L225 Difference]: With dead ends: 188 [2018-01-30 03:08:18,412 INFO L226 Difference]: Without dead ends: 167 [2018-01-30 03:08:18,413 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=823, Invalid=3337, Unknown=0, NotChecked=0, Total=4160 [2018-01-30 03:08:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-30 03:08:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 143. [2018-01-30 03:08:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-30 03:08:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2018-01-30 03:08:18,425 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 70 [2018-01-30 03:08:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:18,425 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2018-01-30 03:08:18,425 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 03:08:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2018-01-30 03:08:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-01-30 03:08:18,427 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:18,427 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 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] [2018-01-30 03:08:18,427 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash 544995921, now seen corresponding path program 1 times [2018-01-30 03:08:18,427 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:18,427 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:18,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:18,427 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:18,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:18,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 184 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:08:18,571 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:18,571 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 03:08:18,576 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:18,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-30 03:08:18,628 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:18,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-01-30 03:08:18,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 03:08:18,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 03:08:18,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 03:08:18,628 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand 19 states. [2018-01-30 03:08:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:18,864 INFO L93 Difference]: Finished difference Result 199 states and 225 transitions. [2018-01-30 03:08:18,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 03:08:18,878 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 77 [2018-01-30 03:08:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:18,879 INFO L225 Difference]: With dead ends: 199 [2018-01-30 03:08:18,879 INFO L226 Difference]: Without dead ends: 163 [2018-01-30 03:08:18,880 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 03:08:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-30 03:08:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 156. [2018-01-30 03:08:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-30 03:08:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 176 transitions. [2018-01-30 03:08:18,886 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 176 transitions. Word has length 77 [2018-01-30 03:08:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:18,886 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 176 transitions. [2018-01-30 03:08:18,886 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 03:08:18,886 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 176 transitions. [2018-01-30 03:08:18,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-30 03:08:18,887 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:18,887 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 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] [2018-01-30 03:08:18,887 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:18,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1309326619, now seen corresponding path program 2 times [2018-01-30 03:08:18,887 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:18,887 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:18,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:18,888 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:18,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:18,894 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 2 proven. 234 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:08:19,050 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:19,050 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 03:08:19,060 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:08:19,074 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:19,079 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:19,080 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:19,081 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-30 03:08:19,107 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:19,107 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-01-30 03:08:19,107 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 03:08:19,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 03:08:19,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 03:08:19,107 INFO L87 Difference]: Start difference. First operand 156 states and 176 transitions. Second operand 21 states. [2018-01-30 03:08:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:19,376 INFO L93 Difference]: Finished difference Result 212 states and 240 transitions. [2018-01-30 03:08:19,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 03:08:19,377 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2018-01-30 03:08:19,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:19,377 INFO L225 Difference]: With dead ends: 212 [2018-01-30 03:08:19,377 INFO L226 Difference]: Without dead ends: 176 [2018-01-30 03:08:19,378 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 03:08:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-30 03:08:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 169. [2018-01-30 03:08:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-30 03:08:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 191 transitions. [2018-01-30 03:08:19,383 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 191 transitions. Word has length 83 [2018-01-30 03:08:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:19,384 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 191 transitions. [2018-01-30 03:08:19,384 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 03:08:19,384 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 191 transitions. [2018-01-30 03:08:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-01-30 03:08:19,384 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:19,384 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 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] [2018-01-30 03:08:19,384 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:19,384 INFO L82 PathProgramCache]: Analyzing trace with hash -810893211, now seen corresponding path program 3 times [2018-01-30 03:08:19,385 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:19,385 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:19,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:19,385 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:19,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:19,392 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 290 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:08:19,581 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:19,581 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 03:08:19,587 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:08:19,592 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:19,594 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:19,594 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:19,595 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:19,597 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:19,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2018-01-30 03:08:19,774 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:19,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 34 [2018-01-30 03:08:19,774 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 03:08:19,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 03:08:19,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 03:08:19,775 INFO L87 Difference]: Start difference. First operand 169 states and 191 transitions. Second operand 34 states. [2018-01-30 03:08:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:22,996 INFO L93 Difference]: Finished difference Result 424 states and 487 transitions. [2018-01-30 03:08:22,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-01-30 03:08:22,996 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 89 [2018-01-30 03:08:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:22,998 INFO L225 Difference]: With dead ends: 424 [2018-01-30 03:08:22,998 INFO L226 Difference]: Without dead ends: 388 [2018-01-30 03:08:23,001 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4842 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2924, Invalid=12082, Unknown=0, NotChecked=0, Total=15006 [2018-01-30 03:08:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-01-30 03:08:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 257. [2018-01-30 03:08:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-01-30 03:08:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 292 transitions. [2018-01-30 03:08:23,009 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 292 transitions. Word has length 89 [2018-01-30 03:08:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:23,009 INFO L432 AbstractCegarLoop]: Abstraction has 257 states and 292 transitions. [2018-01-30 03:08:23,009 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 03:08:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 292 transitions. [2018-01-30 03:08:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-01-30 03:08:23,010 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:23,010 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 9, 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] [2018-01-30 03:08:23,010 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:23,010 INFO L82 PathProgramCache]: Analyzing trace with hash -184072146, now seen corresponding path program 4 times [2018-01-30 03:08:23,010 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:23,010 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:23,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:23,011 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:23,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:23,018 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 2 proven. 353 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:08:23,184 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:23,184 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 03:08:23,190 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:08:23,206 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:23,208 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 60 proven. 37 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2018-01-30 03:08:23,498 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:23,498 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14] total 37 [2018-01-30 03:08:23,499 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 03:08:23,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 03:08:23,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1117, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 03:08:23,499 INFO L87 Difference]: Start difference. First operand 257 states and 292 transitions. Second operand 37 states. [2018-01-30 03:08:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:25,440 INFO L93 Difference]: Finished difference Result 493 states and 557 transitions. [2018-01-30 03:08:25,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-01-30 03:08:25,440 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 96 [2018-01-30 03:08:25,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:25,441 INFO L225 Difference]: With dead ends: 493 [2018-01-30 03:08:25,441 INFO L226 Difference]: Without dead ends: 457 [2018-01-30 03:08:25,444 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6803 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3555, Invalid=15351, Unknown=0, NotChecked=0, Total=18906 [2018-01-30 03:08:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-01-30 03:08:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 125. [2018-01-30 03:08:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-30 03:08:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 139 transitions. [2018-01-30 03:08:25,450 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 139 transitions. Word has length 96 [2018-01-30 03:08:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:25,451 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 139 transitions. [2018-01-30 03:08:25,451 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 03:08:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 139 transitions. [2018-01-30 03:08:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-30 03:08:25,451 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:25,451 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:25,451 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:25,452 INFO L82 PathProgramCache]: Analyzing trace with hash -665799025, now seen corresponding path program 4 times [2018-01-30 03:08:25,452 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:25,452 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:25,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:25,452 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:25,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:25,459 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 4 proven. 420 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 03:08:25,631 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:25,631 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 03:08:25,635 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:08:25,645 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:25,646 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 3 proven. 116 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-01-30 03:08:25,871 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:25,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16] total 41 [2018-01-30 03:08:25,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-30 03:08:25,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-30 03:08:25,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1372, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 03:08:25,872 INFO L87 Difference]: Start difference. First operand 125 states and 139 transitions. Second operand 41 states. [2018-01-30 03:08:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:27,161 INFO L93 Difference]: Finished difference Result 277 states and 314 transitions. [2018-01-30 03:08:27,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-01-30 03:08:27,161 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 110 [2018-01-30 03:08:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:27,162 INFO L225 Difference]: With dead ends: 277 [2018-01-30 03:08:27,162 INFO L226 Difference]: Without dead ends: 246 [2018-01-30 03:08:27,164 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2004, Invalid=8502, Unknown=0, NotChecked=0, Total=10506 [2018-01-30 03:08:27,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-01-30 03:08:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 218. [2018-01-30 03:08:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-30 03:08:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 246 transitions. [2018-01-30 03:08:27,173 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 246 transitions. Word has length 110 [2018-01-30 03:08:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:27,174 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 246 transitions. [2018-01-30 03:08:27,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-30 03:08:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 246 transitions. [2018-01-30 03:08:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-30 03:08:27,174 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:27,174 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:27,174 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:27,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1804596526, now seen corresponding path program 5 times [2018-01-30 03:08:27,175 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:27,175 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:27,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:27,175 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:27,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:27,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 4 proven. 494 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 03:08:27,436 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:27,436 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 03:08:27,440 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:08:27,444 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,445 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,446 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,447 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,447 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,448 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,449 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,450 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,451 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,452 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,453 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,455 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,457 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,459 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:27,459 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:27,461 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-30 03:08:27,487 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:27,487 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-01-30 03:08:27,487 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 03:08:27,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 03:08:27,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-30 03:08:27,487 INFO L87 Difference]: Start difference. First operand 218 states and 246 transitions. Second operand 29 states. [2018-01-30 03:08:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:27,824 INFO L93 Difference]: Finished difference Result 290 states and 327 transitions. [2018-01-30 03:08:27,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 03:08:27,825 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 117 [2018-01-30 03:08:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:27,825 INFO L225 Difference]: With dead ends: 290 [2018-01-30 03:08:27,825 INFO L226 Difference]: Without dead ends: 238 [2018-01-30 03:08:27,826 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=978, Invalid=1992, Unknown=0, NotChecked=0, Total=2970 [2018-01-30 03:08:27,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-30 03:08:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 231. [2018-01-30 03:08:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-01-30 03:08:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2018-01-30 03:08:27,836 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 117 [2018-01-30 03:08:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:27,836 INFO L432 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2018-01-30 03:08:27,836 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 03:08:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2018-01-30 03:08:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-01-30 03:08:27,837 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:27,837 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:27,837 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:27,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1979964060, now seen corresponding path program 6 times [2018-01-30 03:08:27,837 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:27,837 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:27,838 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:27,838 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:27,838 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:27,844 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 4 proven. 574 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 03:08:28,077 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:28,077 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 03:08:28,082 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:08:28,086 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,087 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,089 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,090 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,092 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,093 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,094 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,095 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,096 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,097 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,098 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,099 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:28,099 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:28,101 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 77 proven. 131 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-01-30 03:08:28,431 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:28,431 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18] total 47 [2018-01-30 03:08:28,431 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-30 03:08:28,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-30 03:08:28,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2018-01-30 03:08:28,432 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand 47 states. [2018-01-30 03:08:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:32,343 INFO L93 Difference]: Finished difference Result 362 states and 405 transitions. [2018-01-30 03:08:32,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-01-30 03:08:32,343 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 123 [2018-01-30 03:08:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:32,344 INFO L225 Difference]: With dead ends: 362 [2018-01-30 03:08:32,344 INFO L226 Difference]: Without dead ends: 310 [2018-01-30 03:08:32,346 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10463 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5016, Invalid=23714, Unknown=0, NotChecked=0, Total=28730 [2018-01-30 03:08:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-01-30 03:08:32,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 156. [2018-01-30 03:08:32,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-30 03:08:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2018-01-30 03:08:32,353 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 123 [2018-01-30 03:08:32,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:32,353 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2018-01-30 03:08:32,353 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-30 03:08:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2018-01-30 03:08:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-01-30 03:08:32,354 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:32,354 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:32,354 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:32,354 INFO L82 PathProgramCache]: Analyzing trace with hash -676155312, now seen corresponding path program 5 times [2018-01-30 03:08:32,354 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:32,354 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:32,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:32,355 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:32,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:32,361 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 6 proven. 660 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:08:32,754 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:32,755 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 03:08:32,759 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:08:32,763 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,770 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,771 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,772 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,773 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,774 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,774 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,777 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,778 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,780 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,782 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,783 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,786 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:32,786 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:32,788 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-01-30 03:08:32,817 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:32,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-01-30 03:08:32,818 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 03:08:32,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 03:08:32,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 03:08:32,818 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand 33 states. [2018-01-30 03:08:33,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:33,160 INFO L93 Difference]: Finished difference Result 208 states and 229 transitions. [2018-01-30 03:08:33,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-30 03:08:33,160 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 138 [2018-01-30 03:08:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:33,161 INFO L225 Difference]: With dead ends: 208 [2018-01-30 03:08:33,161 INFO L226 Difference]: Without dead ends: 167 [2018-01-30 03:08:33,161 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1278, Invalid=2628, Unknown=0, NotChecked=0, Total=3906 [2018-01-30 03:08:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-30 03:08:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2018-01-30 03:08:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-30 03:08:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2018-01-30 03:08:33,168 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 138 [2018-01-30 03:08:33,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:33,168 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2018-01-30 03:08:33,168 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 03:08:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2018-01-30 03:08:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-30 03:08:33,169 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:33,169 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:33,169 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash 303164250, now seen corresponding path program 6 times [2018-01-30 03:08:33,169 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:33,169 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:33,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:33,170 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:33,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:33,176 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 6 proven. 752 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:08:33,850 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:33,850 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 03:08:33,855 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:08:33,859 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,860 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,861 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,862 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,864 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,865 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,866 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,867 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,869 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,870 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,871 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,872 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:33,874 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:33,876 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 11 proven. 247 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-01-30 03:08:34,151 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:34,151 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 20] total 53 [2018-01-30 03:08:34,152 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-30 03:08:34,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-30 03:08:34,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=2308, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 03:08:34,152 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand 53 states. [2018-01-30 03:08:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:35,928 INFO L93 Difference]: Finished difference Result 352 states and 397 transitions. [2018-01-30 03:08:35,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-01-30 03:08:35,929 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 144 [2018-01-30 03:08:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:35,930 INFO L225 Difference]: With dead ends: 352 [2018-01-30 03:08:35,930 INFO L226 Difference]: Without dead ends: 311 [2018-01-30 03:08:35,931 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5077 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3285, Invalid=14537, Unknown=0, NotChecked=0, Total=17822 [2018-01-30 03:08:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-30 03:08:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 280. [2018-01-30 03:08:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-01-30 03:08:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 316 transitions. [2018-01-30 03:08:35,945 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 316 transitions. Word has length 144 [2018-01-30 03:08:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:35,945 INFO L432 AbstractCegarLoop]: Abstraction has 280 states and 316 transitions. [2018-01-30 03:08:35,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-30 03:08:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 316 transitions. [2018-01-30 03:08:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-01-30 03:08:35,946 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:35,946 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:35,946 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1729689545, now seen corresponding path program 7 times [2018-01-30 03:08:35,946 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:35,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:35,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:35,947 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:35,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:35,953 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 6 proven. 850 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:08:36,524 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:36,524 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 03:08:36,529 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:36,547 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-01-30 03:08:36,579 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:36,580 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-01-30 03:08:36,580 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 03:08:36,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 03:08:36,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 03:08:36,580 INFO L87 Difference]: Start difference. First operand 280 states and 316 transitions. Second operand 37 states. [2018-01-30 03:08:37,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:37,242 INFO L93 Difference]: Finished difference Result 368 states and 414 transitions. [2018-01-30 03:08:37,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-30 03:08:37,242 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 151 [2018-01-30 03:08:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:37,243 INFO L225 Difference]: With dead ends: 368 [2018-01-30 03:08:37,243 INFO L226 Difference]: Without dead ends: 300 [2018-01-30 03:08:37,244 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1618, Invalid=3352, Unknown=0, NotChecked=0, Total=4970 [2018-01-30 03:08:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-30 03:08:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 293. [2018-01-30 03:08:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-01-30 03:08:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 331 transitions. [2018-01-30 03:08:37,258 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 331 transitions. Word has length 151 [2018-01-30 03:08:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:37,259 INFO L432 AbstractCegarLoop]: Abstraction has 293 states and 331 transitions. [2018-01-30 03:08:37,259 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 03:08:37,259 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 331 transitions. [2018-01-30 03:08:37,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-01-30 03:08:37,259 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:37,259 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:37,259 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:37,260 INFO L82 PathProgramCache]: Analyzing trace with hash -667356141, now seen corresponding path program 8 times [2018-01-30 03:08:37,260 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:37,260 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:37,260 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:37,260 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:37,260 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:37,268 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 6 proven. 954 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:08:37,691 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:37,691 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 03:08:37,696 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:08:37,701 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:37,710 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:37,712 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:37,714 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-01-30 03:08:37,744 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:37,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-01-30 03:08:37,744 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 03:08:37,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 03:08:37,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 03:08:37,744 INFO L87 Difference]: Start difference. First operand 293 states and 331 transitions. Second operand 39 states. [2018-01-30 03:08:38,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:38,237 INFO L93 Difference]: Finished difference Result 381 states and 429 transitions. [2018-01-30 03:08:38,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-01-30 03:08:38,237 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 157 [2018-01-30 03:08:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:38,238 INFO L225 Difference]: With dead ends: 381 [2018-01-30 03:08:38,239 INFO L226 Difference]: Without dead ends: 313 [2018-01-30 03:08:38,240 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1803, Invalid=3747, Unknown=0, NotChecked=0, Total=5550 [2018-01-30 03:08:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-01-30 03:08:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 306. [2018-01-30 03:08:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-01-30 03:08:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 346 transitions. [2018-01-30 03:08:38,252 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 346 transitions. Word has length 157 [2018-01-30 03:08:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:38,253 INFO L432 AbstractCegarLoop]: Abstraction has 306 states and 346 transitions. [2018-01-30 03:08:38,253 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 03:08:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 346 transitions. [2018-01-30 03:08:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-01-30 03:08:38,253 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:38,253 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:38,253 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:38,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1560735523, now seen corresponding path program 9 times [2018-01-30 03:08:38,254 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:38,254 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:38,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:38,254 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:38,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:38,261 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 6 proven. 1064 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:08:38,812 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:38,812 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 03:08:38,817 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:08:38,822 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,828 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,830 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,832 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,833 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,834 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,835 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,836 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,837 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,838 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,839 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,840 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,841 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,842 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,843 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:38,845 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:38,847 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 7 proven. 296 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-01-30 03:08:39,308 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:39,308 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 22] total 61 [2018-01-30 03:08:39,308 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-30 03:08:39,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-30 03:08:39,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=591, Invalid=3069, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 03:08:39,309 INFO L87 Difference]: Start difference. First operand 306 states and 346 transitions. Second operand 61 states. [2018-01-30 03:08:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:43,939 INFO L93 Difference]: Finished difference Result 729 states and 832 transitions. [2018-01-30 03:08:43,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-01-30 03:08:43,940 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 163 [2018-01-30 03:08:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:43,941 INFO L225 Difference]: With dead ends: 729 [2018-01-30 03:08:43,941 INFO L226 Difference]: Without dead ends: 661 [2018-01-30 03:08:43,943 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17105 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8696, Invalid=41704, Unknown=0, NotChecked=0, Total=50400 [2018-01-30 03:08:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2018-01-30 03:08:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 455. [2018-01-30 03:08:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-01-30 03:08:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 517 transitions. [2018-01-30 03:08:43,966 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 517 transitions. Word has length 163 [2018-01-30 03:08:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:43,967 INFO L432 AbstractCegarLoop]: Abstraction has 455 states and 517 transitions. [2018-01-30 03:08:43,967 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-30 03:08:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 517 transitions. [2018-01-30 03:08:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-01-30 03:08:43,967 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:43,967 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 18, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:43,968 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:43,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1741776742, now seen corresponding path program 10 times [2018-01-30 03:08:43,968 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:43,968 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:43,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:43,969 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:43,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:43,977 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 6 proven. 1181 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:08:44,464 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:44,464 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 03:08:44,469 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:08:44,483 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:44,484 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 106 proven. 314 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-01-30 03:08:45,276 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:45,276 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 22] total 63 [2018-01-30 03:08:45,276 INFO L409 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-01-30 03:08:45,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-01-30 03:08:45,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=3265, Unknown=0, NotChecked=0, Total=3906 [2018-01-30 03:08:45,277 INFO L87 Difference]: Start difference. First operand 455 states and 517 transitions. Second operand 63 states. [2018-01-30 03:08:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:49,645 INFO L93 Difference]: Finished difference Result 819 states and 921 transitions. [2018-01-30 03:08:49,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-01-30 03:08:49,645 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 170 [2018-01-30 03:08:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:49,647 INFO L225 Difference]: With dead ends: 819 [2018-01-30 03:08:49,647 INFO L226 Difference]: Without dead ends: 751 [2018-01-30 03:08:49,649 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20616 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=9443, Invalid=45547, Unknown=0, NotChecked=0, Total=54990 [2018-01-30 03:08:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2018-01-30 03:08:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 208. [2018-01-30 03:08:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-30 03:08:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 231 transitions. [2018-01-30 03:08:49,661 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 231 transitions. Word has length 170 [2018-01-30 03:08:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:49,661 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 231 transitions. [2018-01-30 03:08:49,661 INFO L433 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-01-30 03:08:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 231 transitions. [2018-01-30 03:08:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-01-30 03:08:49,662 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:49,662 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:49,662 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:49,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1473151633, now seen corresponding path program 7 times [2018-01-30 03:08:49,662 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:49,662 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:49,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:49,663 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:49,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:49,670 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 8 proven. 1302 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:08:50,199 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:50,200 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 03:08:50,205 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:50,222 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-30 03:08:50,256 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:50,256 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-01-30 03:08:50,256 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-30 03:08:50,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-30 03:08:50,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 03:08:50,256 INFO L87 Difference]: Start difference. First operand 208 states and 231 transitions. Second operand 45 states. [2018-01-30 03:08:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:50,896 INFO L93 Difference]: Finished difference Result 270 states and 297 transitions. [2018-01-30 03:08:50,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-30 03:08:50,896 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 184 [2018-01-30 03:08:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:50,897 INFO L225 Difference]: With dead ends: 270 [2018-01-30 03:08:50,897 INFO L226 Difference]: Without dead ends: 219 [2018-01-30 03:08:50,897 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2418, Invalid=5064, Unknown=0, NotChecked=0, Total=7482 [2018-01-30 03:08:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-30 03:08:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-01-30 03:08:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-30 03:08:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 239 transitions. [2018-01-30 03:08:50,910 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 239 transitions. Word has length 184 [2018-01-30 03:08:50,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:50,910 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 239 transitions. [2018-01-30 03:08:50,910 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-30 03:08:50,910 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 239 transitions. [2018-01-30 03:08:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-30 03:08:50,911 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:50,911 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:50,911 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:50,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1374091001, now seen corresponding path program 8 times [2018-01-30 03:08:50,911 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:50,911 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:50,913 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:50,913 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:08:50,913 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:50,922 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 8 proven. 1430 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:08:51,466 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:51,466 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:08:51,471 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:08:51,476 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:51,486 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:51,488 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:51,490 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-30 03:08:51,528 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:51,528 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-01-30 03:08:51,528 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-30 03:08:51,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-30 03:08:51,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2018-01-30 03:08:51,529 INFO L87 Difference]: Start difference. First operand 215 states and 239 transitions. Second operand 47 states. [2018-01-30 03:08:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:52,163 INFO L93 Difference]: Finished difference Result 277 states and 305 transitions. [2018-01-30 03:08:52,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-30 03:08:52,163 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 190 [2018-01-30 03:08:52,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:52,164 INFO L225 Difference]: With dead ends: 277 [2018-01-30 03:08:52,164 INFO L226 Difference]: Without dead ends: 226 [2018-01-30 03:08:52,165 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2643, Invalid=5547, Unknown=0, NotChecked=0, Total=8190 [2018-01-30 03:08:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-30 03:08:52,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 222. [2018-01-30 03:08:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-01-30 03:08:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2018-01-30 03:08:52,175 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 190 [2018-01-30 03:08:52,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:52,175 INFO L432 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2018-01-30 03:08:52,175 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-30 03:08:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2018-01-30 03:08:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-01-30 03:08:52,176 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:52,176 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:52,176 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:52,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1979293955, now seen corresponding path program 9 times [2018-01-30 03:08:52,176 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:52,176 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:52,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:52,177 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:52,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:52,184 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 8 proven. 1564 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:08:52,893 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:52,893 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:08:52,898 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:08:52,907 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,919 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,926 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,939 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,946 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,952 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,953 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,954 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,956 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,965 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,975 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,976 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,978 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,979 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,980 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,981 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,983 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,984 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,985 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,986 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,987 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,989 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:08:52,989 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:52,992 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 16 proven. 492 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2018-01-30 03:08:53,456 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:53,456 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 24] total 71 [2018-01-30 03:08:53,457 INFO L409 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-01-30 03:08:53,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-01-30 03:08:53,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=836, Invalid=4134, Unknown=0, NotChecked=0, Total=4970 [2018-01-30 03:08:53,457 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand 71 states. [2018-01-30 03:08:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:56,520 INFO L93 Difference]: Finished difference Result 469 states and 528 transitions. [2018-01-30 03:08:56,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-01-30 03:08:56,520 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 196 [2018-01-30 03:08:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:56,521 INFO L225 Difference]: With dead ends: 469 [2018-01-30 03:08:56,521 INFO L226 Difference]: Without dead ends: 418 [2018-01-30 03:08:56,523 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9968 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6488, Invalid=27922, Unknown=0, NotChecked=0, Total=34410 [2018-01-30 03:08:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-01-30 03:08:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 381. [2018-01-30 03:08:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-01-30 03:08:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 431 transitions. [2018-01-30 03:08:56,544 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 431 transitions. Word has length 196 [2018-01-30 03:08:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:56,544 INFO L432 AbstractCegarLoop]: Abstraction has 381 states and 431 transitions. [2018-01-30 03:08:56,544 INFO L433 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-01-30 03:08:56,544 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 431 transitions. [2018-01-30 03:08:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-01-30 03:08:56,545 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:56,545 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:56,545 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:56,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1229623330, now seen corresponding path program 11 times [2018-01-30 03:08:56,545 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:56,546 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:56,546 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:56,546 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:56,546 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:56,553 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:57,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 8 proven. 1704 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:08:57,200 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:57,201 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:08:57,206 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:08:57,210 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,211 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,211 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,212 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,213 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,214 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,215 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,215 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,216 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,217 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,218 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,219 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,220 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,221 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,222 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,223 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,224 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,226 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,227 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,228 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,230 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,232 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,234 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,237 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:08:57,237 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:57,240 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 0 proven. 1704 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-30 03:08:57,277 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:57,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-01-30 03:08:57,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-01-30 03:08:57,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-01-30 03:08:57,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2018-01-30 03:08:57,278 INFO L87 Difference]: Start difference. First operand 381 states and 431 transitions. Second operand 51 states. [2018-01-30 03:08:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:08:58,131 INFO L93 Difference]: Finished difference Result 485 states and 546 transitions. [2018-01-30 03:08:58,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-30 03:08:58,131 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 203 [2018-01-30 03:08:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:08:58,135 INFO L225 Difference]: With dead ends: 485 [2018-01-30 03:08:58,135 INFO L226 Difference]: Without dead ends: 401 [2018-01-30 03:08:58,136 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3123, Invalid=6579, Unknown=0, NotChecked=0, Total=9702 [2018-01-30 03:08:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-01-30 03:08:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 394. [2018-01-30 03:08:58,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-01-30 03:08:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 446 transitions. [2018-01-30 03:08:58,157 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 446 transitions. Word has length 203 [2018-01-30 03:08:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:08:58,157 INFO L432 AbstractCegarLoop]: Abstraction has 394 states and 446 transitions. [2018-01-30 03:08:58,157 INFO L433 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-01-30 03:08:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 446 transitions. [2018-01-30 03:08:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-01-30 03:08:58,158 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:08:58,158 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 24, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:08:58,158 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:08:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash -973006296, now seen corresponding path program 12 times [2018-01-30 03:08:58,158 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:08:58,158 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:08:58,159 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:58,159 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:08:58,159 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:08:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:08:58,166 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:08:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1930 backedges. 8 proven. 1850 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:08:58,871 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:08:58,871 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:08:58,875 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:08:58,882 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,883 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,885 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,886 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,889 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,891 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,892 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,894 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,895 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,896 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,897 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,899 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,900 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,901 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,902 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,904 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,905 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,906 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,907 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,909 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,910 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,911 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:08:58,912 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:08:58,914 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:08:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1930 backedges. 141 proven. 534 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2018-01-30 03:08:59,573 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:08:59,573 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 26] total 77 [2018-01-30 03:08:59,573 INFO L409 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-01-30 03:08:59,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-01-30 03:08:59,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=969, Invalid=4883, Unknown=0, NotChecked=0, Total=5852 [2018-01-30 03:08:59,574 INFO L87 Difference]: Start difference. First operand 394 states and 446 transitions. Second operand 77 states. [2018-01-30 03:09:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:09:06,080 INFO L93 Difference]: Finished difference Result 584 states and 651 transitions. [2018-01-30 03:09:06,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-01-30 03:09:06,080 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 209 [2018-01-30 03:09:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:09:06,081 INFO L225 Difference]: With dead ends: 584 [2018-01-30 03:09:06,081 INFO L226 Difference]: Without dead ends: 500 [2018-01-30 03:09:06,083 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31580 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=14032, Invalid=69200, Unknown=0, NotChecked=0, Total=83232 [2018-01-30 03:09:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2018-01-30 03:09:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 253. [2018-01-30 03:09:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-30 03:09:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 281 transitions. [2018-01-30 03:09:06,101 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 281 transitions. Word has length 209 [2018-01-30 03:09:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:09:06,102 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 281 transitions. [2018-01-30 03:09:06,102 INFO L433 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-01-30 03:09:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 281 transitions. [2018-01-30 03:09:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-01-30 03:09:06,102 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:09:06,103 INFO L350 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:09:06,103 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:09:06,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1828348092, now seen corresponding path program 10 times [2018-01-30 03:09:06,103 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:09:06,103 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:09:06,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:09:06,103 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:09:06,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:09:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:09:06,111 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:09:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 10 proven. 2002 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-01-30 03:09:07,084 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:09:07,084 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:09:07,089 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:09:07,107 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:09:07,110 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:09:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 9 proven. 725 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2018-01-30 03:09:08,469 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:09:08,469 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 28] total 81 [2018-01-30 03:09:08,469 INFO L409 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-01-30 03:09:08,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-01-30 03:09:08,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1072, Invalid=5408, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 03:09:08,470 INFO L87 Difference]: Start difference. First operand 253 states and 281 transitions. Second operand 81 states. [2018-01-30 03:09:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:09:12,358 INFO L93 Difference]: Finished difference Result 530 states and 595 transitions. [2018-01-30 03:09:12,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-01-30 03:09:12,358 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 224 [2018-01-30 03:09:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:09:12,359 INFO L225 Difference]: With dead ends: 530 [2018-01-30 03:09:12,359 INFO L226 Difference]: Without dead ends: 469 [2018-01-30 03:09:12,361 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12844 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8015, Invalid=35875, Unknown=0, NotChecked=0, Total=43890 [2018-01-30 03:09:12,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2018-01-30 03:09:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 430. [2018-01-30 03:09:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2018-01-30 03:09:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 486 transitions. [2018-01-30 03:09:12,386 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 486 transitions. Word has length 224 [2018-01-30 03:09:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:09:12,386 INFO L432 AbstractCegarLoop]: Abstraction has 430 states and 486 transitions. [2018-01-30 03:09:12,387 INFO L433 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-01-30 03:09:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 486 transitions. [2018-01-30 03:09:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-01-30 03:09:12,387 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:09:12,388 INFO L350 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 26, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:09:12,388 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:09:12,388 INFO L82 PathProgramCache]: Analyzing trace with hash 535280267, now seen corresponding path program 13 times [2018-01-30 03:09:12,388 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:09:12,388 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:09:12,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:09:12,388 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:09:12,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:09:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:09:12,395 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:09:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 10 proven. 2160 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-01-30 03:09:13,268 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:09:13,268 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:09:13,276 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:09:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:09:13,297 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:09:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 0 proven. 2160 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-01-30 03:09:13,341 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:09:13,341 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-01-30 03:09:13,341 INFO L409 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-01-30 03:09:13,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-01-30 03:09:13,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 03:09:13,342 INFO L87 Difference]: Start difference. First operand 430 states and 486 transitions. Second operand 57 states. [2018-01-30 03:09:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:09:14,283 INFO L93 Difference]: Finished difference Result 550 states and 618 transitions. [2018-01-30 03:09:14,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-01-30 03:09:14,283 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 231 [2018-01-30 03:09:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:09:14,284 INFO L225 Difference]: With dead ends: 550 [2018-01-30 03:09:14,284 INFO L226 Difference]: Without dead ends: 450 [2018-01-30 03:09:14,285 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3918, Invalid=8292, Unknown=0, NotChecked=0, Total=12210 [2018-01-30 03:09:14,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2018-01-30 03:09:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 443. [2018-01-30 03:09:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-01-30 03:09:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 501 transitions. [2018-01-30 03:09:14,310 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 501 transitions. Word has length 231 [2018-01-30 03:09:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:09:14,311 INFO L432 AbstractCegarLoop]: Abstraction has 443 states and 501 transitions. [2018-01-30 03:09:14,311 INFO L433 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-01-30 03:09:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 501 transitions. [2018-01-30 03:09:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-01-30 03:09:14,312 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:09:14,312 INFO L350 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 27, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:09:14,312 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:09:14,312 INFO L82 PathProgramCache]: Analyzing trace with hash -169766699, now seen corresponding path program 14 times [2018-01-30 03:09:14,312 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:09:14,312 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:09:14,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:09:14,313 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:09:14,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:09:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:09:14,320 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:09:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 10 proven. 2324 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-01-30 03:09:15,695 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:09:15,695 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:09:15,700 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:09:15,705 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:09:15,718 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:09:15,720 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:09:15,722 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:09:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2324 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-01-30 03:09:15,764 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:09:15,765 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-01-30 03:09:15,765 INFO L409 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-01-30 03:09:15,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-01-30 03:09:15,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=899, Invalid=2523, Unknown=0, NotChecked=0, Total=3422 [2018-01-30 03:09:15,765 INFO L87 Difference]: Start difference. First operand 443 states and 501 transitions. Second operand 59 states. [2018-01-30 03:09:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:09:16,784 INFO L93 Difference]: Finished difference Result 563 states and 633 transitions. [2018-01-30 03:09:16,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-30 03:09:16,785 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 237 [2018-01-30 03:09:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:09:16,786 INFO L225 Difference]: With dead ends: 563 [2018-01-30 03:09:16,786 INFO L226 Difference]: Without dead ends: 463 [2018-01-30 03:09:16,786 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4203, Invalid=8907, Unknown=0, NotChecked=0, Total=13110 [2018-01-30 03:09:16,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-01-30 03:09:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 456. [2018-01-30 03:09:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2018-01-30 03:09:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 516 transitions. [2018-01-30 03:09:16,813 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 516 transitions. Word has length 237 [2018-01-30 03:09:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:09:16,813 INFO L432 AbstractCegarLoop]: Abstraction has 456 states and 516 transitions. [2018-01-30 03:09:16,813 INFO L433 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-01-30 03:09:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 516 transitions. [2018-01-30 03:09:16,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-01-30 03:09:16,814 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:09:16,814 INFO L350 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 28, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:09:16,814 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:09:16,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1831864223, now seen corresponding path program 15 times [2018-01-30 03:09:16,815 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:09:16,815 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:09:16,815 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:09:16,815 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:09:16,815 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:09:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:09:16,824 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:09:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2619 backedges. 10 proven. 2494 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-01-30 03:09:17,840 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:09:17,840 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:09:17,845 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:09:17,851 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,852 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,855 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,857 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,859 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,860 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,861 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,862 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,864 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,865 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,866 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,869 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,870 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,872 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,873 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,875 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,876 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,877 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,879 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,880 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,881 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,883 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,884 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,886 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,887 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,889 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:09:17,889 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:09:17,892 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:09:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2619 backedges. 17 proven. 804 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2018-01-30 03:09:18,685 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:09:18,685 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 30] total 89 [2018-01-30 03:09:18,685 INFO L409 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-01-30 03:09:18,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-01-30 03:09:18,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1291, Invalid=6541, Unknown=0, NotChecked=0, Total=7832 [2018-01-30 03:09:18,686 INFO L87 Difference]: Start difference. First operand 456 states and 516 transitions. Second operand 89 states. Received shutdown request... [2018-01-30 03:09:23,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-01-30 03:09:23,337 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 03:09:23,340 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 03:09:23,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 03:09:23 BasicIcfg [2018-01-30 03:09:23,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 03:09:23,340 INFO L168 Benchmark]: Toolchain (without parser) took 70805.60 ms. Allocated memory was 151.5 MB in the beginning and 774.4 MB in the end (delta: 622.9 MB). Free memory was 115.2 MB in the beginning and 527.4 MB in the end (delta: -412.2 MB). Peak memory consumption was 210.7 MB. Max. memory is 5.3 GB. [2018-01-30 03:09:23,341 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 151.5 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 03:09:23,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 102.21 ms. Allocated memory is still 151.5 MB. Free memory was 115.0 MB in the beginning and 107.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-30 03:09:23,341 INFO L168 Benchmark]: Boogie Preprocessor took 17.76 ms. Allocated memory is still 151.5 MB. Free memory was 107.0 MB in the beginning and 105.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. [2018-01-30 03:09:23,344 INFO L168 Benchmark]: RCFGBuilder took 267.82 ms. Allocated memory is still 151.5 MB. Free memory was 105.5 MB in the beginning and 93.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 5.3 GB. [2018-01-30 03:09:23,344 INFO L168 Benchmark]: IcfgTransformer took 11.06 ms. Allocated memory is still 151.5 MB. Free memory was 93.8 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 5.3 GB. [2018-01-30 03:09:23,344 INFO L168 Benchmark]: TraceAbstraction took 70404.24 ms. Allocated memory was 151.5 MB in the beginning and 774.4 MB in the end (delta: 622.9 MB). Free memory was 92.5 MB in the beginning and 527.4 MB in the end (delta: -434.9 MB). Peak memory consumption was 188.0 MB. Max. memory is 5.3 GB. [2018-01-30 03:09:23,345 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 151.5 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 102.21 ms. Allocated memory is still 151.5 MB. Free memory was 115.0 MB in the beginning and 107.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.76 ms. Allocated memory is still 151.5 MB. Free memory was 107.0 MB in the beginning and 105.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 267.82 ms. Allocated memory is still 151.5 MB. Free memory was 105.5 MB in the beginning and 93.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 5.3 GB. * IcfgTransformer took 11.06 ms. Allocated memory is still 151.5 MB. Free memory was 93.8 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 70404.24 ms. Allocated memory was 151.5 MB in the beginning and 774.4 MB in the end (delta: 622.9 MB). Free memory was 92.5 MB in the beginning and 527.4 MB in the end (delta: -434.9 MB). Peak memory consumption was 188.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (456states) and interpolant automaton (currently 200 states, 89 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 257 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. TIMEOUT Result, 70.3s OverallTime, 32 OverallIterations, 30 TraceHistogramMax, 49.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 987 SDtfs, 4341 SDslu, 23737 SDs, 0 SdLazy, 25045 SolverSat, 1274 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6737 GetRequests, 3671 SyntacticMatches, 0 SemanticMatches, 3065 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157297 ImplicationChecksByTransitivity, 52.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=456occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 31 MinimizatonAttempts, 1952 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 7785 NumberOfCodeBlocks, 7520 NumberOfCodeBlocksAsserted, 237 NumberOfCheckSat, 7724 ConstructedInterpolants, 464 QuantifiedInterpolants, 4983468 SizeOfPredicates, 631 NumberOfNonLiveVariables, 5260 ConjunctsInSsa, 918 ConjunctsInUnsatCore, 61 InterpolantComputations, 4 PerfectInterpolantSequences, 11507/52996 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sanfoundry_27_true-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_03-09-23-353.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sanfoundry_27_true-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_03-09-23-353.csv Completed graceful shutdown