java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/standard_partition_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-29 23:06:57,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 23:06:57,534 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 23:06:57,543 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 23:06:57,543 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 23:06:57,544 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 23:06:57,545 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 23:06:57,546 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 23:06:57,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 23:06:57,547 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 23:06:57,548 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 23:06:57,548 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 23:06:57,548 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 23:06:57,549 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 23:06:57,549 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 23:06:57,551 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 23:06:57,552 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 23:06:57,552 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 23:06:57,553 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 23:06:57,554 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 23:06:57,555 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-29 23:06:57,555 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-29 23:06:57,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-29 23:06:57,555 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-29 23:06:57,556 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-29 23:06:57,556 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-29 23:06:57,556 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-29 23:06:57,557 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-29 23:06:57,557 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-29 23:06:57,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-29 23:06:57,557 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-29 23:06:57,557 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 [2018-01-29 23:06:57,562 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 23:06:57,562 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 23:06:57,563 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 23:06:57,563 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 23:06:57,563 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 23:06:57,563 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 23:06:57,563 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 23:06:57,563 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 23:06:57,563 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-29 23:06:57,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 23:06:57,564 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 23:06:57,565 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 23:06:57,565 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 23:06:57,566 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 23:06:57,566 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 23:06:57,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 23:06:57,590 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 23:06:57,592 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 23:06:57,593 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 23:06:57,593 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 23:06:57,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_false-unreach-call_ground.i [2018-01-29 23:06:57,659 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 23:06:57,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-29 23:06:57,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 23:06:57,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 23:06:57,664 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 23:06:57,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd0c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57, skipping insertion in model container [2018-01-29 23:06:57,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,675 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 23:06:57,684 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 23:06:57,754 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 23:06:57,763 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 23:06:57,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57 WrapperNode [2018-01-29 23:06:57,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 23:06:57,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 23:06:57,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 23:06:57,766 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 23:06:57,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (1/1) ... [2018-01-29 23:06:57,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 23:06:57,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 23:06:57,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 23:06:57,784 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 23:06:57,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (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 [2018-01-29 23:06:57,837 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 23:06:57,838 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 23:06:57,838 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-29 23:06:57,838 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 23:06:57,838 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-29 23:06:57,838 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-29 23:06:57,838 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 23:06:57,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 23:06:57,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 23:06:58,118 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 23:06:58,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:06:58 BoogieIcfgContainer [2018-01-29 23:06:58,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 23:06:58,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 23:06:58,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 23:06:58,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 23:06:58,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 11:06:57" (1/3) ... [2018-01-29 23:06:58,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0b5e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:06:58, skipping insertion in model container [2018-01-29 23:06:58,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:06:57" (2/3) ... [2018-01-29 23:06:58,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0b5e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:06:58, skipping insertion in model container [2018-01-29 23:06:58,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:06:58" (3/3) ... [2018-01-29 23:06:58,123 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_partition_false-unreach-call_ground.i [2018-01-29 23:06:58,128 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 23:06:58,132 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-29 23:06:58,156 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 23:06:58,156 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 23:06:58,156 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 23:06:58,156 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 23:06:58,156 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 23:06:58,157 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 23:06:58,157 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 23:06:58,157 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 23:06:58,157 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 23:06:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-01-29 23:06:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-29 23:06:58,169 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:58,170 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:58,170 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:06:58,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1427988912, now seen corresponding path program 1 times [2018-01-29 23:06:58,174 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:58,174 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:58,202 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:58,202 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:58,202 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:58,223 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:06:58,239 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:06:58,239 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-29 23:06:58,240 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-29 23:06:58,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-29 23:06:58,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-29 23:06:58,249 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-01-29 23:06:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:58,263 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2018-01-29 23:06:58,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-29 23:06:58,264 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-29 23:06:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:58,270 INFO L225 Difference]: With dead ends: 82 [2018-01-29 23:06:58,270 INFO L226 Difference]: Without dead ends: 44 [2018-01-29 23:06:58,271 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 [2018-01-29 23:06:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-29 23:06:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-01-29 23:06:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-29 23:06:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-01-29 23:06:58,295 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 21 [2018-01-29 23:06:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:58,295 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-01-29 23:06:58,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-29 23:06:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-01-29 23:06:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-29 23:06:58,296 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:58,296 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:58,296 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:06:58,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1567392797, now seen corresponding path program 1 times [2018-01-29 23:06:58,296 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:58,296 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:58,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:58,297 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:58,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:58,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 23:06:58,353 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:06:58,353 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-29 23:06:58,354 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-29 23:06:58,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-29 23:06:58,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-29 23:06:58,354 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 3 states. [2018-01-29 23:06:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:58,502 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2018-01-29 23:06:58,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-29 23:06:58,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-01-29 23:06:58,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:58,503 INFO L225 Difference]: With dead ends: 84 [2018-01-29 23:06:58,503 INFO L226 Difference]: Without dead ends: 56 [2018-01-29 23:06:58,504 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 [2018-01-29 23:06:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-29 23:06:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2018-01-29 23:06:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-29 23:06:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-01-29 23:06:58,507 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 23 [2018-01-29 23:06:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:58,508 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-01-29 23:06:58,508 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-29 23:06:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-01-29 23:06:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-29 23:06:58,508 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:58,508 INFO L350 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:58,509 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:06:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash 922786525, now seen corresponding path program 1 times [2018-01-29 23:06:58,509 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:58,509 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:58,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:58,510 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:58,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:58,514 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 23:06:58,569 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:58,569 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 [2018-01-29 23:06:58,583 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:58,606 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 23:06:58,635 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:58,635 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-01-29 23:06:58,635 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 23:06:58,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 23:06:58,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-29 23:06:58,635 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-01-29 23:06:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:58,841 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2018-01-29 23:06:58,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 23:06:58,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-29 23:06:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:58,842 INFO L225 Difference]: With dead ends: 98 [2018-01-29 23:06:58,842 INFO L226 Difference]: Without dead ends: 68 [2018-01-29 23:06:58,842 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-29 23:06:58,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-29 23:06:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2018-01-29 23:06:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-29 23:06:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-01-29 23:06:58,847 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-01-29 23:06:58,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:58,847 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-01-29 23:06:58,847 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 23:06:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-01-29 23:06:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-29 23:06:58,848 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:58,848 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:58,848 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:06:58,848 INFO L82 PathProgramCache]: Analyzing trace with hash -621397603, now seen corresponding path program 2 times [2018-01-29 23:06:58,848 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:58,848 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:58,849 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:58,849 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:58,849 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:58,855 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-29 23:06:58,924 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:06:58,925 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-29 23:06:58,925 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 23:06:58,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 23:06:58,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-29 23:06:58,925 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-01-29 23:06:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:59,017 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2018-01-29 23:06:59,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-29 23:06:59,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-01-29 23:06:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:59,018 INFO L225 Difference]: With dead ends: 119 [2018-01-29 23:06:59,018 INFO L226 Difference]: Without dead ends: 100 [2018-01-29 23:06:59,018 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:06:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-01-29 23:06:59,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2018-01-29 23:06:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-01-29 23:06:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2018-01-29 23:06:59,025 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 39 [2018-01-29 23:06:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:59,025 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2018-01-29 23:06:59,025 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 23:06:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2018-01-29 23:06:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-29 23:06:59,026 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:59,026 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:59,026 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:06:59,027 INFO L82 PathProgramCache]: Analyzing trace with hash 287667514, now seen corresponding path program 1 times [2018-01-29 23:06:59,027 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:59,027 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:59,027 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:59,027 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:06:59,027 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:59,038 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-01-29 23:06:59,079 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:59,079 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 [2018-01-29 23:06:59,091 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:59,106 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-01-29 23:06:59,126 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:59,127 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-29 23:06:59,127 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-29 23:06:59,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-29 23:06:59,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:06:59,127 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand 5 states. [2018-01-29 23:06:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:59,280 INFO L93 Difference]: Finished difference Result 177 states and 212 transitions. [2018-01-29 23:06:59,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-29 23:06:59,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-01-29 23:06:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:59,282 INFO L225 Difference]: With dead ends: 177 [2018-01-29 23:06:59,282 INFO L226 Difference]: Without dead ends: 122 [2018-01-29 23:06:59,282 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:06:59,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-01-29 23:06:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2018-01-29 23:06:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-29 23:06:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2018-01-29 23:06:59,288 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 41 [2018-01-29 23:06:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:59,288 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2018-01-29 23:06:59,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-29 23:06:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2018-01-29 23:06:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-29 23:06:59,289 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:59,289 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:59,289 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:06:59,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1835159814, now seen corresponding path program 2 times [2018-01-29 23:06:59,289 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:59,289 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:59,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:59,290 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:06:59,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:59,297 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-29 23:06:59,340 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:59,340 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 [2018-01-29 23:06:59,357 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:06:59,363 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:59,366 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:06:59,366 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:06:59,367 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-29 23:06:59,388 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:59,388 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-01-29 23:06:59,389 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-29 23:06:59,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-29 23:06:59,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-29 23:06:59,389 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand 6 states. [2018-01-29 23:06:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:06:59,666 INFO L93 Difference]: Finished difference Result 211 states and 252 transitions. [2018-01-29 23:06:59,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-29 23:06:59,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2018-01-29 23:06:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:06:59,667 INFO L225 Difference]: With dead ends: 211 [2018-01-29 23:06:59,667 INFO L226 Difference]: Without dead ends: 144 [2018-01-29 23:06:59,668 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-29 23:06:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-29 23:06:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2018-01-29 23:06:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-29 23:06:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2018-01-29 23:06:59,673 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 49 [2018-01-29 23:06:59,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:06:59,673 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2018-01-29 23:06:59,673 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-29 23:06:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2018-01-29 23:06:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-29 23:06:59,674 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:06:59,674 INFO L350 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:06:59,674 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:06:59,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1864601414, now seen corresponding path program 3 times [2018-01-29 23:06:59,675 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:06:59,675 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:06:59,675 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:59,675 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:06:59,675 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:06:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:06:59,686 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:06:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-29 23:06:59,735 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:06:59,735 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 [2018-01-29 23:06:59,743 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:06:59,749 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:59,764 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:59,774 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:59,787 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:06:59,799 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:06:59,800 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:06:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-01-29 23:06:59,862 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:06:59,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2018-01-29 23:06:59,863 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-29 23:06:59,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-29 23:06:59,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-01-29 23:06:59,863 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 10 states. [2018-01-29 23:07:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:07:00,233 INFO L93 Difference]: Finished difference Result 357 states and 428 transitions. [2018-01-29 23:07:00,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-29 23:07:00,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-01-29 23:07:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:07:00,235 INFO L225 Difference]: With dead ends: 357 [2018-01-29 23:07:00,235 INFO L226 Difference]: Without dead ends: 278 [2018-01-29 23:07:00,235 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-01-29 23:07:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-01-29 23:07:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 179. [2018-01-29 23:07:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-29 23:07:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 209 transitions. [2018-01-29 23:07:00,243 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 209 transitions. Word has length 57 [2018-01-29 23:07:00,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:07:00,243 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 209 transitions. [2018-01-29 23:07:00,243 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-29 23:07:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 209 transitions. [2018-01-29 23:07:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-01-29 23:07:00,245 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:07:00,245 INFO L350 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:07:00,245 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:07:00,245 INFO L82 PathProgramCache]: Analyzing trace with hash 632752890, now seen corresponding path program 4 times [2018-01-29 23:07:00,245 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:07:00,245 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:07:00,245 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:00,246 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:07:00,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:07:00,252 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:07:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-01-29 23:07:00,392 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:07:00,392 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 [2018-01-29 23:07:00,407 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 23:07:00,424 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:07:00,426 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:07:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-01-29 23:07:00,536 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:07:00,536 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-01-29 23:07:00,536 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-29 23:07:00,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-29 23:07:00,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2018-01-29 23:07:00,536 INFO L87 Difference]: Start difference. First operand 179 states and 209 transitions. Second operand 13 states. [2018-01-29 23:07:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:07:00,931 INFO L93 Difference]: Finished difference Result 473 states and 565 transitions. [2018-01-29 23:07:00,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-29 23:07:00,932 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2018-01-29 23:07:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:07:00,933 INFO L225 Difference]: With dead ends: 473 [2018-01-29 23:07:00,933 INFO L226 Difference]: Without dead ends: 378 [2018-01-29 23:07:00,934 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2018-01-29 23:07:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-01-29 23:07:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 271. [2018-01-29 23:07:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-01-29 23:07:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 316 transitions. [2018-01-29 23:07:00,945 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 316 transitions. Word has length 65 [2018-01-29 23:07:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:07:00,945 INFO L432 AbstractCegarLoop]: Abstraction has 271 states and 316 transitions. [2018-01-29 23:07:00,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-29 23:07:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 316 transitions. [2018-01-29 23:07:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-01-29 23:07:00,947 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:07:00,947 INFO L350 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:07:00,948 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:07:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1437897414, now seen corresponding path program 5 times [2018-01-29 23:07:00,948 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:07:00,948 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:07:00,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:00,949 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:07:00,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:07:00,955 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:07:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-29 23:07:01,028 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:07:01,028 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 [2018-01-29 23:07:01,032 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 23:07:01,035 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:01,036 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:01,040 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:01,042 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:01,043 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:01,044 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:01,046 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:01,046 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:07:01,048 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:07:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-29 23:07:01,070 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:07:01,070 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-29 23:07:01,070 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-29 23:07:01,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-29 23:07:01,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-29 23:07:01,071 INFO L87 Difference]: Start difference. First operand 271 states and 316 transitions. Second operand 9 states. [2018-01-29 23:07:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:07:01,127 INFO L93 Difference]: Finished difference Result 458 states and 542 transitions. [2018-01-29 23:07:01,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-29 23:07:01,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2018-01-29 23:07:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:07:01,129 INFO L225 Difference]: With dead ends: 458 [2018-01-29 23:07:01,129 INFO L226 Difference]: Without dead ends: 337 [2018-01-29 23:07:01,129 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-29 23:07:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-01-29 23:07:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 311. [2018-01-29 23:07:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-01-29 23:07:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 363 transitions. [2018-01-29 23:07:01,136 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 363 transitions. Word has length 73 [2018-01-29 23:07:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:07:01,137 INFO L432 AbstractCegarLoop]: Abstraction has 311 states and 363 transitions. [2018-01-29 23:07:01,137 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-29 23:07:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 363 transitions. [2018-01-29 23:07:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-01-29 23:07:01,138 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:07:01,138 INFO L350 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:07:01,138 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:07:01,138 INFO L82 PathProgramCache]: Analyzing trace with hash 820299514, now seen corresponding path program 6 times [2018-01-29 23:07:01,138 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:07:01,138 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:07:01,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:01,139 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:07:01,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:07:01,145 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:07:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-01-29 23:07:01,502 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:07:01,502 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 [2018-01-29 23:07:01,506 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 23:07:01,510 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:07:01,511 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:07:01,512 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:07:01,513 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 23:07:01,514 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:07:01,515 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:07:01,559 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-01-29 23:07:01,560 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-29 23:07:01,569 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2018-01-29 23:07:01,569 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-29 23:07:01,570 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-29 23:07:01,570 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:14, output treesize:5 [2018-01-29 23:07:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-01-29 23:07:01,623 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:07:01,624 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-01-29 23:07:01,624 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-29 23:07:01,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-29 23:07:01,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-01-29 23:07:01,624 INFO L87 Difference]: Start difference. First operand 311 states and 363 transitions. Second operand 16 states. [2018-01-29 23:07:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:07:02,657 INFO L93 Difference]: Finished difference Result 725 states and 861 transitions. [2018-01-29 23:07:02,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-29 23:07:02,658 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 81 [2018-01-29 23:07:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:07:02,660 INFO L225 Difference]: With dead ends: 725 [2018-01-29 23:07:02,660 INFO L226 Difference]: Without dead ends: 592 [2018-01-29 23:07:02,661 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=596, Invalid=1854, Unknown=0, NotChecked=0, Total=2450 [2018-01-29 23:07:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2018-01-29 23:07:02,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 500. [2018-01-29 23:07:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2018-01-29 23:07:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 587 transitions. [2018-01-29 23:07:02,674 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 587 transitions. Word has length 81 [2018-01-29 23:07:02,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:07:02,674 INFO L432 AbstractCegarLoop]: Abstraction has 500 states and 587 transitions. [2018-01-29 23:07:02,674 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-29 23:07:02,674 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 587 transitions. [2018-01-29 23:07:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-01-29 23:07:02,675 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:07:02,675 INFO L350 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:07:02,675 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:07:02,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1132564584, now seen corresponding path program 1 times [2018-01-29 23:07:02,675 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:07:02,675 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:07:02,676 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:02,676 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:07:02,676 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:07:02,682 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:07:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-01-29 23:07:02,734 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 23:07:02,734 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-29 23:07:02,734 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 23:07:02,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 23:07:02,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-29 23:07:02,734 INFO L87 Difference]: Start difference. First operand 500 states and 587 transitions. Second operand 4 states. [2018-01-29 23:07:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:07:02,843 INFO L93 Difference]: Finished difference Result 681 states and 799 transitions. [2018-01-29 23:07:02,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 23:07:02,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2018-01-29 23:07:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:07:02,846 INFO L225 Difference]: With dead ends: 681 [2018-01-29 23:07:02,846 INFO L226 Difference]: Without dead ends: 661 [2018-01-29 23:07:02,847 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-29 23:07:02,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2018-01-29 23:07:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 603. [2018-01-29 23:07:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2018-01-29 23:07:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 715 transitions. [2018-01-29 23:07:02,859 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 715 transitions. Word has length 90 [2018-01-29 23:07:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:07:02,860 INFO L432 AbstractCegarLoop]: Abstraction has 603 states and 715 transitions. [2018-01-29 23:07:02,860 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 23:07:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 715 transitions. [2018-01-29 23:07:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-29 23:07:02,862 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:07:02,862 INFO L350 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:07:02,862 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:07:02,862 INFO L82 PathProgramCache]: Analyzing trace with hash 364401815, now seen corresponding path program 7 times [2018-01-29 23:07:02,862 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:07:02,862 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:07:02,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:02,863 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:07:02,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:07:02,872 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:07:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-01-29 23:07:03,329 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:07:03,329 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 [2018-01-29 23:07:03,335 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:07:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:07:03,361 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:07:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-01-29 23:07:03,406 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:07:03,406 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-29 23:07:03,407 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-29 23:07:03,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-29 23:07:03,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-29 23:07:03,407 INFO L87 Difference]: Start difference. First operand 603 states and 715 transitions. Second operand 11 states. [2018-01-29 23:07:04,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:07:04,019 INFO L93 Difference]: Finished difference Result 1044 states and 1255 transitions. [2018-01-29 23:07:04,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-29 23:07:04,019 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2018-01-29 23:07:04,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:07:04,021 INFO L225 Difference]: With dead ends: 1044 [2018-01-29 23:07:04,021 INFO L226 Difference]: Without dead ends: 722 [2018-01-29 23:07:04,022 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-29 23:07:04,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2018-01-29 23:07:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 675. [2018-01-29 23:07:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2018-01-29 23:07:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 801 transitions. [2018-01-29 23:07:04,034 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 801 transitions. Word has length 91 [2018-01-29 23:07:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:07:04,035 INFO L432 AbstractCegarLoop]: Abstraction has 675 states and 801 transitions. [2018-01-29 23:07:04,035 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-29 23:07:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 801 transitions. [2018-01-29 23:07:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-29 23:07:04,036 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:07:04,036 INFO L350 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:07:04,036 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:07:04,036 INFO L82 PathProgramCache]: Analyzing trace with hash 877367639, now seen corresponding path program 8 times [2018-01-29 23:07:04,036 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:07:04,036 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:07:04,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:04,037 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 23:07:04,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:07:04,043 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:07:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-01-29 23:07:04,118 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:07:04,118 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 [2018-01-29 23:07:04,123 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 23:07:04,132 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:04,137 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 23:07:04,143 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:07:04,145 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:07:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-01-29 23:07:04,173 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:07:04,173 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-01-29 23:07:04,174 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-29 23:07:04,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-29 23:07:04,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-29 23:07:04,174 INFO L87 Difference]: Start difference. First operand 675 states and 801 transitions. Second operand 12 states. [2018-01-29 23:07:04,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 23:07:04,562 INFO L93 Difference]: Finished difference Result 1146 states and 1377 transitions. [2018-01-29 23:07:04,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-29 23:07:04,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2018-01-29 23:07:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 23:07:04,565 INFO L225 Difference]: With dead ends: 1146 [2018-01-29 23:07:04,565 INFO L226 Difference]: Without dead ends: 794 [2018-01-29 23:07:04,566 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-29 23:07:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2018-01-29 23:07:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 747. [2018-01-29 23:07:04,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2018-01-29 23:07:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 887 transitions. [2018-01-29 23:07:04,578 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 887 transitions. Word has length 99 [2018-01-29 23:07:04,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 23:07:04,578 INFO L432 AbstractCegarLoop]: Abstraction has 747 states and 887 transitions. [2018-01-29 23:07:04,578 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-29 23:07:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 887 transitions. [2018-01-29 23:07:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-01-29 23:07:04,579 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 23:07:04,579 INFO L350 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 23:07:04,579 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 23:07:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1939494423, now seen corresponding path program 9 times [2018-01-29 23:07:04,580 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 23:07:04,580 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 23:07:04,580 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:04,580 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 23:07:04,580 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 23:07:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 23:07:04,589 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 23:07:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-01-29 23:07:05,002 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 23:07:05,002 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 [2018-01-29 23:07:05,007 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 23:07:05,016 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,023 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,024 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,027 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,033 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,043 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,050 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,053 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,054 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,055 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 23:07:05,056 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 23:07:05,058 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 23:07:12,623 INFO L700 Elim1Store]: detected not equals via solver [2018-01-29 23:07:12,624 INFO L700 Elim1Store]: detected not equals via solver [2018-01-29 23:07:12,625 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2018-01-29 23:07:12,626 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-29 23:07:12,630 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-29 23:07:12,630 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2018-01-29 23:07:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 103 proven. 257 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-01-29 23:07:12,904 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 23:07:12,904 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 32 [2018-01-29 23:07:12,904 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-29 23:07:12,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-29 23:07:12,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=769, Unknown=3, NotChecked=0, Total=992 [2018-01-29 23:07:12,905 INFO L87 Difference]: Start difference. First operand 747 states and 887 transitions. Second operand 32 states. Received shutdown request... [2018-01-29 23:08:21,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-29 23:08:21,095 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-29 23:08:21,098 WARN L185 ceAbstractionStarter]: Timeout [2018-01-29 23:08:21,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 11:08:21 BoogieIcfgContainer [2018-01-29 23:08:21,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-29 23:08:21,099 INFO L168 Benchmark]: Toolchain (without parser) took 83439.38 ms. Allocated memory was 149.4 MB in the beginning and 270.0 MB in the end (delta: 120.6 MB). Free memory was 114.3 MB in the beginning and 129.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 105.3 MB. Max. memory is 5.3 GB. [2018-01-29 23:08:21,099 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 149.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 23:08:21,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 105.59 ms. Allocated memory is still 149.4 MB. Free memory was 114.3 MB in the beginning and 106.0 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. [2018-01-29 23:08:21,100 INFO L168 Benchmark]: Boogie Preprocessor took 17.94 ms. Allocated memory is still 149.4 MB. Free memory was 106.0 MB in the beginning and 104.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-01-29 23:08:21,100 INFO L168 Benchmark]: RCFGBuilder took 334.70 ms. Allocated memory is still 149.4 MB. Free memory was 104.3 MB in the beginning and 90.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 5.3 GB. [2018-01-29 23:08:21,100 INFO L168 Benchmark]: TraceAbstraction took 82978.90 ms. Allocated memory was 149.4 MB in the beginning and 270.0 MB in the end (delta: 120.6 MB). Free memory was 90.3 MB in the beginning and 129.6 MB in the end (delta: -39.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 5.3 GB. [2018-01-29 23:08:21,101 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 149.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 105.59 ms. Allocated memory is still 149.4 MB. Free memory was 114.3 MB in the beginning and 106.0 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.94 ms. Allocated memory is still 149.4 MB. Free memory was 106.0 MB in the beginning and 104.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 334.70 ms. Allocated memory is still 149.4 MB. Free memory was 104.3 MB in the beginning and 90.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 82978.90 ms. Allocated memory was 149.4 MB in the beginning and 270.0 MB in the end (delta: 120.6 MB). Free memory was 90.3 MB in the beginning and 129.6 MB in the end (delta: -39.3 MB). Peak memory consumption was 81.3 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 (747states) and interpolant automaton (currently 29 states, 32 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 54 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 1 error locations. TIMEOUT Result, 82.9s OverallTime, 14 OverallIterations, 11 TraceHistogramMax, 72.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 650 SDtfs, 1383 SDslu, 2553 SDs, 0 SdLazy, 1734 SolverSat, 199 SolverUnsat, 36 SolverUnknown, 0 SolverNotchecked, 46.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 849 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 34.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=747occurred in iteration=13, 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: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 534 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 1561 NumberOfCodeBlocks, 1499 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1537 ConstructedInterpolants, 18 QuantifiedInterpolants, 302081 SizeOfPredicates, 20 NumberOfNonLiveVariables, 901 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 1842/3364 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/standard_partition_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-29_23-08-21-105.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_partition_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-29_23-08-21-105.csv Completed graceful shutdown