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_two_index_02_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 00:06:25,090 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 00:06:25,091 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 00:06:25,103 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 00:06:25,103 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 00:06:25,104 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 00:06:25,105 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 00:06:25,107 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 00:06:25,108 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 00:06:25,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 00:06:25,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 00:06:25,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 00:06:25,110 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 00:06:25,111 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 00:06:25,111 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 00:06:25,116 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 00:06:25,117 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 00:06:25,118 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 00:06:25,119 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 00:06:25,121 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 00:06:25,122 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 00:06:25,125 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-30 00:06:25,132 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 00:06:25,132 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 00:06:25,135 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 00:06:25,136 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 00:06:25,136 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 00:06:25,136 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 00:06:25,136 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 00:06:25,136 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 00:06:25,136 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 00:06:25,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 00:06:25,137 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 00:06:25,137 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 00:06:25,138 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 00:06:25,138 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 00:06:25,139 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 00:06:25,139 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 00:06:25,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 00:06:25,168 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 00:06:25,171 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 00:06:25,171 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 00:06:25,171 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 00:06:25,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_02_true-unreach-call.i [2018-01-30 00:06:25,235 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 00:06:25,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-30 00:06:25,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 00:06:25,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 00:06:25,240 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 00:06:25,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1b5fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25, skipping insertion in model container [2018-01-30 00:06:25,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,254 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:06:25,263 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:06:25,332 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:06:25,340 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:06:25,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25 WrapperNode [2018-01-30 00:06:25,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 00:06:25,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 00:06:25,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 00:06:25,344 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 00:06:25,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (1/1) ... [2018-01-30 00:06:25,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 00:06:25,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 00:06:25,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 00:06:25,361 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 00:06:25,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 00:06:25,404 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 00:06:25,404 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 00:06:25,404 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 00:06:25,404 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 00:06:25,405 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 00:06:25,405 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 00:06:25,405 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 00:06:25,405 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 00:06:25,405 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 00:06:25,405 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 00:06:25,651 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 00:06:25,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:06:25 BoogieIcfgContainer [2018-01-30 00:06:25,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 00:06:25,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 00:06:25,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 00:06:25,654 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 00:06:25,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 12:06:25" (1/3) ... [2018-01-30 00:06:25,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2079cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:06:25, skipping insertion in model container [2018-01-30 00:06:25,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:06:25" (2/3) ... [2018-01-30 00:06:25,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2079cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:06:25, skipping insertion in model container [2018-01-30 00:06:25,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:06:25" (3/3) ... [2018-01-30 00:06:25,656 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_two_index_02_true-unreach-call.i [2018-01-30 00:06:25,661 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 00:06:25,665 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 00:06:25,689 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 00:06:25,689 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 00:06:25,689 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 00:06:25,690 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 00:06:25,690 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 00:06:25,690 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 00:06:25,690 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 00:06:25,690 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 00:06:25,690 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 00:06:25,699 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-01-30 00:06:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-30 00:06:25,703 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:25,703 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:25,703 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:25,706 INFO L82 PathProgramCache]: Analyzing trace with hash 956793125, now seen corresponding path program 1 times [2018-01-30 00:06:25,707 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:25,707 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:25,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:25,736 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:25,736 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:25,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 00:06:25,773 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:06:25,773 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 00:06:25,774 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 00:06:25,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 00:06:25,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:06:25,783 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-01-30 00:06:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:25,796 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2018-01-30 00:06:25,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 00:06:25,797 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-30 00:06:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:25,802 INFO L225 Difference]: With dead ends: 62 [2018-01-30 00:06:25,802 INFO L226 Difference]: Without dead ends: 33 [2018-01-30 00:06:25,804 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:06:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-30 00:06:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-30 00:06:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-30 00:06:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-30 00:06:25,825 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-30 00:06:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:25,825 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-30 00:06:25,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 00:06:25,826 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-30 00:06:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-30 00:06:25,826 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:25,826 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] [2018-01-30 00:06:25,826 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1648000248, now seen corresponding path program 1 times [2018-01-30 00:06:25,827 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:25,827 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:25,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:25,828 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:25,828 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:25,833 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 00:06:25,866 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:06:25,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 00:06:25,867 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 00:06:25,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 00:06:25,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:06:25,868 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2018-01-30 00:06:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:25,945 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2018-01-30 00:06:25,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 00:06:25,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-01-30 00:06:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:25,946 INFO L225 Difference]: With dead ends: 58 [2018-01-30 00:06:25,946 INFO L226 Difference]: Without dead ends: 39 [2018-01-30 00:06:25,947 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:06:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-30 00:06:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-01-30 00:06:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-30 00:06:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-30 00:06:25,951 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-30 00:06:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:25,951 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-30 00:06:25,951 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 00:06:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-30 00:06:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-30 00:06:25,951 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:25,951 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:25,952 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:25,952 INFO L82 PathProgramCache]: Analyzing trace with hash -549443760, now seen corresponding path program 1 times [2018-01-30 00:06:25,952 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:25,952 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:25,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:25,953 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:25,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:25,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 00:06:26,020 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:26,020 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:26,031 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:26,104 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 00:06:26,134 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:06:26,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-01-30 00:06:26,134 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 00:06:26,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 00:06:26,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 00:06:26,134 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-30 00:06:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:26,280 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2018-01-30 00:06:26,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 00:06:26,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-30 00:06:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:26,282 INFO L225 Difference]: With dead ends: 72 [2018-01-30 00:06:26,282 INFO L226 Difference]: Without dead ends: 53 [2018-01-30 00:06:26,282 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 00:06:26,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-01-30 00:06:26,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2018-01-30 00:06:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-30 00:06:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-01-30 00:06:26,288 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 27 [2018-01-30 00:06:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:26,288 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-01-30 00:06:26,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 00:06:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-01-30 00:06:26,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-30 00:06:26,289 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:26,289 INFO L350 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-01-30 00:06:26,289 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:26,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1872906445, now seen corresponding path program 1 times [2018-01-30 00:06:26,289 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:26,289 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:26,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:26,290 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:26,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:26,300 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-30 00:06:26,344 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:26,344 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:26,350 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:26,377 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 00:06:26,471 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:06:26,471 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2018-01-30 00:06:26,472 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 00:06:26,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 00:06:26,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:06:26,472 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2018-01-30 00:06:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:26,564 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2018-01-30 00:06:26,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 00:06:26,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-01-30 00:06:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:26,565 INFO L225 Difference]: With dead ends: 96 [2018-01-30 00:06:26,565 INFO L226 Difference]: Without dead ends: 75 [2018-01-30 00:06:26,565 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:06:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-30 00:06:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2018-01-30 00:06:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-30 00:06:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2018-01-30 00:06:26,570 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 38 [2018-01-30 00:06:26,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:26,570 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2018-01-30 00:06:26,570 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 00:06:26,570 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2018-01-30 00:06:26,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-01-30 00:06:26,571 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:26,571 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:26,571 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:26,571 INFO L82 PathProgramCache]: Analyzing trace with hash 936426808, now seen corresponding path program 2 times [2018-01-30 00:06:26,571 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:26,571 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:26,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:26,572 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:26,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:26,582 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-30 00:06:26,708 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:26,708 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:26,722 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:06:26,728 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:06:26,734 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:06:26,735 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:06:26,736 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-30 00:06:26,768 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:06:26,768 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-30 00:06:26,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 00:06:26,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 00:06:26,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-30 00:06:26,769 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 7 states. [2018-01-30 00:06:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:26,889 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2018-01-30 00:06:26,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 00:06:26,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2018-01-30 00:06:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:26,890 INFO L225 Difference]: With dead ends: 107 [2018-01-30 00:06:26,890 INFO L226 Difference]: Without dead ends: 81 [2018-01-30 00:06:26,890 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-30 00:06:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-30 00:06:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2018-01-30 00:06:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-30 00:06:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2018-01-30 00:06:26,894 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 55 [2018-01-30 00:06:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:26,894 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2018-01-30 00:06:26,894 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 00:06:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2018-01-30 00:06:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-01-30 00:06:26,895 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:26,895 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:26,895 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:26,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2104349072, now seen corresponding path program 3 times [2018-01-30 00:06:26,895 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:26,895 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:26,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:26,896 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:06:26,896 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:26,906 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-30 00:06:27,175 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:27,175 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) [2018-01-30 00:06:27,186 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:27,191 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:06:27,207 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:06:27,221 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:06:27,233 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:06:27,234 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-01-30 00:06:27,255 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:06:27,256 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2018-01-30 00:06:27,256 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-30 00:06:27,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-30 00:06:27,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 00:06:27,256 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 8 states. [2018-01-30 00:06:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:27,460 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2018-01-30 00:06:27,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 00:06:27,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2018-01-30 00:06:27,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:27,461 INFO L225 Difference]: With dead ends: 123 [2018-01-30 00:06:27,461 INFO L226 Difference]: Without dead ends: 97 [2018-01-30 00:06:27,461 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 00:06:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-30 00:06:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2018-01-30 00:06:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-01-30 00:06:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2018-01-30 00:06:27,465 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 61 [2018-01-30 00:06:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:27,466 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2018-01-30 00:06:27,466 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-30 00:06:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2018-01-30 00:06:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-30 00:06:27,466 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:27,466 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:27,466 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:27,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1662858509, now seen corresponding path program 4 times [2018-01-30 00:06:27,467 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:27,467 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:27,467 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:27,467 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:06:27,467 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:27,477 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-30 00:06:27,574 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:27,574 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:27,578 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:06:27,596 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:06:27,598 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:27,640 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 [2018-01-30 00:06:27,640 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:06:27,642 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:06:27,643 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-01-30 00:06:27,675 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:27,677 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-01-30 00:06:27,677 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:06:27,765 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-30 00:06:27,765 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:18 [2018-01-30 00:06:27,823 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:27,824 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:27,827 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 30 [2018-01-30 00:06:27,828 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:06:27,849 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-01-30 00:06:27,849 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:26, output treesize:25 [2018-01-30 00:06:28,057 WARN L143 SmtUtils]: Spent 102ms on a formula simplification that was a NOOP. DAG size: 24 [2018-01-30 00:06:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-30 00:06:28,126 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:06:28,126 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2018-01-30 00:06:28,127 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:06:28,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:06:28,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:06:28,127 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand 19 states. [2018-01-30 00:06:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:28,666 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2018-01-30 00:06:28,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:06:28,666 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2018-01-30 00:06:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:28,667 INFO L225 Difference]: With dead ends: 138 [2018-01-30 00:06:28,667 INFO L226 Difference]: Without dead ends: 107 [2018-01-30 00:06:28,668 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1273, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 00:06:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-01-30 00:06:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 90. [2018-01-30 00:06:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-30 00:06:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2018-01-30 00:06:28,675 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 72 [2018-01-30 00:06:28,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:28,675 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2018-01-30 00:06:28,675 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:06:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2018-01-30 00:06:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-01-30 00:06:28,676 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:28,676 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:28,676 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash -56532755, now seen corresponding path program 1 times [2018-01-30 00:06:28,677 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:28,677 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:28,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:28,677 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:06:28,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:28,698 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 2 proven. 140 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-30 00:06:28,817 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:28,817 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:28,824 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:28,839 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-01-30 00:06:28,862 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:06:28,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-01-30 00:06:28,863 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 00:06:28,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 00:06:28,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 00:06:28,863 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 10 states. [2018-01-30 00:06:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:29,001 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2018-01-30 00:06:29,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-30 00:06:29,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2018-01-30 00:06:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:29,003 INFO L225 Difference]: With dead ends: 161 [2018-01-30 00:06:29,003 INFO L226 Difference]: Without dead ends: 123 [2018-01-30 00:06:29,005 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 00:06:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-30 00:06:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2018-01-30 00:06:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-30 00:06:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2018-01-30 00:06:29,011 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 87 [2018-01-30 00:06:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:29,012 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2018-01-30 00:06:29,012 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 00:06:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2018-01-30 00:06:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-01-30 00:06:29,012 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:29,013 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:29,013 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash -413465168, now seen corresponding path program 2 times [2018-01-30 00:06:29,013 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:29,013 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:29,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:29,013 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:06:29,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:29,021 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 2 proven. 184 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-01-30 00:06:29,185 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:29,185 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:29,193 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:06:29,197 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:06:29,205 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:06:29,206 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:06:29,207 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-01-30 00:06:29,232 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:06:29,232 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-30 00:06:29,232 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 00:06:29,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 00:06:29,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-30 00:06:29,233 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 11 states. [2018-01-30 00:06:29,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:29,354 INFO L93 Difference]: Finished difference Result 172 states and 181 transitions. [2018-01-30 00:06:29,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-30 00:06:29,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2018-01-30 00:06:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:29,360 INFO L225 Difference]: With dead ends: 172 [2018-01-30 00:06:29,360 INFO L226 Difference]: Without dead ends: 129 [2018-01-30 00:06:29,361 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-30 00:06:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-30 00:06:29,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2018-01-30 00:06:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-30 00:06:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2018-01-30 00:06:29,365 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 98 [2018-01-30 00:06:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:29,366 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2018-01-30 00:06:29,366 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 00:06:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2018-01-30 00:06:29,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-01-30 00:06:29,367 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:29,367 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:29,368 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:29,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1692554664, now seen corresponding path program 3 times [2018-01-30 00:06:29,368 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:29,368 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:29,368 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:29,368 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:06:29,368 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:29,385 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 2 proven. 234 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-01-30 00:06:29,735 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:29,735 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:29,741 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:06:29,746 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:06:29,756 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:06:29,757 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:06:29,759 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:06:29,761 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:06:29,761 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:06:29,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2018-01-30 00:06:29,793 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:06:29,793 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 12 [2018-01-30 00:06:29,793 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 00:06:29,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 00:06:29,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 00:06:29,793 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand 12 states. [2018-01-30 00:06:30,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:06:30,018 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2018-01-30 00:06:30,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 00:06:30,019 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2018-01-30 00:06:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:06:30,019 INFO L225 Difference]: With dead ends: 188 [2018-01-30 00:06:30,020 INFO L226 Difference]: Without dead ends: 145 [2018-01-30 00:06:30,020 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 00:06:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-30 00:06:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 118. [2018-01-30 00:06:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-30 00:06:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2018-01-30 00:06:30,029 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 104 [2018-01-30 00:06:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:06:30,030 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2018-01-30 00:06:30,030 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 00:06:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2018-01-30 00:06:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-01-30 00:06:30,030 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:06:30,031 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:06:30,031 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:06:30,031 INFO L82 PathProgramCache]: Analyzing trace with hash 119080661, now seen corresponding path program 4 times [2018-01-30 00:06:30,031 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:06:30,031 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:06:30,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:30,031 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:06:30,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:06:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:06:30,040 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:06:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 2 proven. 290 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-01-30 00:06:30,155 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:06:30,155 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:06:30,161 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:06:30,174 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:06:30,176 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:06:30,244 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 [2018-01-30 00:06:30,244 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:06:30,261 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:06:30,261 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-01-30 00:06:30,285 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,286 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-01-30 00:06:30,287 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:06:30,290 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-30 00:06:30,290 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:18 [2018-01-30 00:06:30,346 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,347 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,348 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,350 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 34 [2018-01-30 00:06:30,350 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:06:30,357 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-01-30 00:06:30,358 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:30 [2018-01-30 00:06:30,443 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,443 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,444 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,445 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,445 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,449 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:06:30,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-01-30 00:06:30,454 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:06:30,469 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2018-01-30 00:06:30,469 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:43, output treesize:42 [2018-01-30 00:06:36,819 WARN L143 SmtUtils]: Spent 1692ms on a formula simplification that was a NOOP. DAG size: 39 [2018-01-30 00:06:38,992 WARN L143 SmtUtils]: Spent 2053ms on a formula simplification that was a NOOP. DAG size: 37 [2018-01-30 00:06:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 12 proven. 203 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-01-30 00:06:39,118 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:06:39,119 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23] total 34 [2018-01-30 00:06:39,119 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 00:06:39,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 00:06:39,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=924, Unknown=1, NotChecked=0, Total=1122 [2018-01-30 00:06:39,119 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand 34 states. [2018-01-30 00:06:44,432 WARN L143 SmtUtils]: Spent 388ms on a formula simplification that was a NOOP. DAG size: 34 [2018-01-30 00:06:44,602 WARN L143 SmtUtils]: Spent 147ms on a formula simplification that was a NOOP. DAG size: 35 [2018-01-30 00:06:46,326 WARN L143 SmtUtils]: Spent 1564ms on a formula simplification that was a NOOP. DAG size: 40 [2018-01-30 00:06:47,614 WARN L143 SmtUtils]: Spent 1222ms on a formula simplification that was a NOOP. DAG size: 40 [2018-01-30 00:06:48,159 WARN L143 SmtUtils]: Spent 120ms on a formula simplification that was a NOOP. DAG size: 35 [2018-01-30 00:06:58,625 WARN L143 SmtUtils]: Spent 2056ms on a formula simplification that was a NOOP. DAG size: 37 [2018-01-30 00:07:02,930 WARN L143 SmtUtils]: Spent 2024ms on a formula simplification that was a NOOP. DAG size: 37 [2018-01-30 00:07:12,968 WARN L143 SmtUtils]: Spent 2103ms on a formula simplification that was a NOOP. DAG size: 35 [2018-01-30 00:07:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:07:14,874 INFO L93 Difference]: Finished difference Result 243 states and 267 transitions. [2018-01-30 00:07:14,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-01-30 00:07:14,875 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 115 [2018-01-30 00:07:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:07:14,875 INFO L225 Difference]: With dead ends: 243 [2018-01-30 00:07:14,876 INFO L226 Difference]: Without dead ends: 195 [2018-01-30 00:07:14,877 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=745, Invalid=4945, Unknown=10, NotChecked=0, Total=5700 [2018-01-30 00:07:14,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-01-30 00:07:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 133. [2018-01-30 00:07:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-30 00:07:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2018-01-30 00:07:14,884 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 115 [2018-01-30 00:07:14,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:07:14,885 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2018-01-30 00:07:14,885 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 00:07:14,885 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2018-01-30 00:07:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-01-30 00:07:14,885 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:07:14,886 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:07:14,886 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:07:14,886 INFO L82 PathProgramCache]: Analyzing trace with hash 565850011, now seen corresponding path program 5 times [2018-01-30 00:07:14,886 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:07:14,886 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:07:14,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:14,886 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:07:14,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:07:14,894 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:07:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 4 proven. 352 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-01-30 00:07:14,988 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:07:14,988 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:07:14,993 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:07:15,004 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,005 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,006 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,022 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,030 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,031 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,032 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,034 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,036 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,039 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,054 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,066 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:15,067 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:07:15,068 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:07:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-01-30 00:07:15,099 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:07:15,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 14 [2018-01-30 00:07:15,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 00:07:15,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 00:07:15,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-30 00:07:15,100 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand 14 states. [2018-01-30 00:07:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:07:15,263 INFO L93 Difference]: Finished difference Result 228 states and 239 transitions. [2018-01-30 00:07:15,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-30 00:07:15,264 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2018-01-30 00:07:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:07:15,264 INFO L225 Difference]: With dead ends: 228 [2018-01-30 00:07:15,264 INFO L226 Difference]: Without dead ends: 171 [2018-01-30 00:07:15,265 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-30 00:07:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-30 00:07:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 144. [2018-01-30 00:07:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-30 00:07:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2018-01-30 00:07:15,271 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 130 [2018-01-30 00:07:15,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:07:15,271 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2018-01-30 00:07:15,271 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 00:07:15,271 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2018-01-30 00:07:15,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-01-30 00:07:15,272 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:07:15,272 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:07:15,272 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:07:15,272 INFO L82 PathProgramCache]: Analyzing trace with hash -943033160, now seen corresponding path program 6 times [2018-01-30 00:07:15,272 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:07:15,272 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:07:15,273 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:15,273 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:07:15,273 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:07:15,281 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:07:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 4 proven. 420 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-30 00:07:15,397 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:07:15,398 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:07:15,402 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:07:15,411 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,413 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,415 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,423 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,427 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,433 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,443 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,445 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,447 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,449 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,452 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,454 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:07:15,457 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:07:15,459 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:07:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-01-30 00:07:15,489 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:07:15,490 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-30 00:07:15,490 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 00:07:15,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 00:07:15,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:07:15,490 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand 15 states. [2018-01-30 00:07:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:07:15,695 INFO L93 Difference]: Finished difference Result 239 states and 249 transitions. [2018-01-30 00:07:15,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 00:07:15,695 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 141 [2018-01-30 00:07:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:07:15,696 INFO L225 Difference]: With dead ends: 239 [2018-01-30 00:07:15,696 INFO L226 Difference]: Without dead ends: 177 [2018-01-30 00:07:15,696 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:07:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-30 00:07:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 150. [2018-01-30 00:07:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-30 00:07:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2018-01-30 00:07:15,701 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 141 [2018-01-30 00:07:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:07:15,702 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2018-01-30 00:07:15,702 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 00:07:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2018-01-30 00:07:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-01-30 00:07:15,703 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:07:15,703 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:07:15,703 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:07:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1835955984, now seen corresponding path program 7 times [2018-01-30 00:07:15,703 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:07:15,703 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:07:15,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:15,704 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:07:15,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:07:15,711 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:07:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 4 proven. 494 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-30 00:07:15,839 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:07:15,839 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:07:15,844 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:07:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:07:15,858 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:07:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-01-30 00:07:15,886 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:07:15,886 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-01-30 00:07:15,886 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 00:07:15,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 00:07:15,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 00:07:15,887 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand 16 states. [2018-01-30 00:07:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:07:16,005 INFO L93 Difference]: Finished difference Result 255 states and 267 transitions. [2018-01-30 00:07:16,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 00:07:16,005 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 147 [2018-01-30 00:07:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:07:16,006 INFO L225 Difference]: With dead ends: 255 [2018-01-30 00:07:16,006 INFO L226 Difference]: Without dead ends: 193 [2018-01-30 00:07:16,006 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 00:07:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-01-30 00:07:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 161. [2018-01-30 00:07:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-30 00:07:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2018-01-30 00:07:16,012 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 147 [2018-01-30 00:07:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:07:16,013 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2018-01-30 00:07:16,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 00:07:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2018-01-30 00:07:16,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-30 00:07:16,013 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:07:16,013 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 8, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:07:16,013 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:07:16,013 INFO L82 PathProgramCache]: Analyzing trace with hash 679379123, now seen corresponding path program 8 times [2018-01-30 00:07:16,013 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:07:16,014 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:07:16,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:16,014 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:07:16,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:07:16,021 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:07:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 4 proven. 574 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-01-30 00:07:16,176 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:07:16,176 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:07:16,181 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:07:16,186 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:16,199 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:07:16,201 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:07:16,202 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:07:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-01-30 00:07:16,231 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:07:16,232 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-30 00:07:16,232 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 00:07:16,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 00:07:16,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-30 00:07:16,232 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand 17 states. [2018-01-30 00:07:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:07:16,475 INFO L93 Difference]: Finished difference Result 266 states and 277 transitions. [2018-01-30 00:07:16,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-30 00:07:16,475 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 158 [2018-01-30 00:07:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:07:16,476 INFO L225 Difference]: With dead ends: 266 [2018-01-30 00:07:16,476 INFO L226 Difference]: Without dead ends: 199 [2018-01-30 00:07:16,476 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-30 00:07:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-01-30 00:07:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 167. [2018-01-30 00:07:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-01-30 00:07:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 170 transitions. [2018-01-30 00:07:16,482 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 170 transitions. Word has length 158 [2018-01-30 00:07:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:07:16,482 INFO L432 AbstractCegarLoop]: Abstraction has 167 states and 170 transitions. [2018-01-30 00:07:16,482 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 00:07:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 170 transitions. [2018-01-30 00:07:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-01-30 00:07:16,483 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:07:16,483 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:07:16,483 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:07:16,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1253803685, now seen corresponding path program 9 times [2018-01-30 00:07:16,483 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:07:16,483 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:07:16,484 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:16,484 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:07:16,484 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:07:16,491 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:07:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 4 proven. 660 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-01-30 00:07:16,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:07:16,797 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:07:16,801 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:07:16,809 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:07:16,811 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:07:16,813 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:07:16,816 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:07:16,818 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:07:16,820 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:07:16,822 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:07:16,825 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:07:16,833 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:07:16,835 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:07:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2018-01-30 00:07:16,862 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:07:16,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 18 [2018-01-30 00:07:16,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 00:07:16,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 00:07:16,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-30 00:07:16,863 INFO L87 Difference]: Start difference. First operand 167 states and 170 transitions. Second operand 18 states. [2018-01-30 00:07:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:07:17,132 INFO L93 Difference]: Finished difference Result 282 states and 295 transitions. [2018-01-30 00:07:17,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 00:07:17,132 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2018-01-30 00:07:17,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:07:17,133 INFO L225 Difference]: With dead ends: 282 [2018-01-30 00:07:17,133 INFO L226 Difference]: Without dead ends: 215 [2018-01-30 00:07:17,133 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-30 00:07:17,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-30 00:07:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 178. [2018-01-30 00:07:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-30 00:07:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2018-01-30 00:07:17,139 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 164 [2018-01-30 00:07:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:07:17,139 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 181 transitions. [2018-01-30 00:07:17,139 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 00:07:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 181 transitions. [2018-01-30 00:07:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-01-30 00:07:17,140 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:07:17,140 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 9, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:07:17,140 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:07:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1723935992, now seen corresponding path program 10 times [2018-01-30 00:07:17,140 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:07:17,140 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:07:17,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:17,141 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:07:17,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:07:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:07:17,148 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:07:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 4 proven. 752 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-01-30 00:07:17,713 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:07:17,713 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 00:07:17,726 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:07:17,742 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:07:17,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:07:17,831 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 [2018-01-30 00:07:17,831 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:07:17,839 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:07:17,839 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-01-30 00:07:17,862 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,863 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-01-30 00:07:17,863 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:07:17,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-30 00:07:17,868 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:18 [2018-01-30 00:07:17,914 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,915 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,916 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,918 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 34 [2018-01-30 00:07:17,918 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:07:17,924 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-01-30 00:07:17,924 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:30 [2018-01-30 00:07:17,987 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,987 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,988 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,988 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,989 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,989 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:17,993 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-01-30 00:07:17,993 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:07:18,005 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2018-01-30 00:07:18,005 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:43, output treesize:42 [2018-01-30 00:07:18,396 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,397 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,397 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,399 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,399 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,400 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,401 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,401 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,402 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,402 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:18,408 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 76 [2018-01-30 00:07:18,409 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:07:18,430 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2018-01-30 00:07:18,430 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:55, output treesize:54 [2018-01-30 00:07:19,059 WARN L143 SmtUtils]: Spent 156ms on a formula simplification that was a NOOP. DAG size: 40 [2018-01-30 00:07:26,049 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,050 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,051 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,051 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,057 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,058 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,058 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,059 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,059 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,060 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,060 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,061 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,062 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,062 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,063 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:07:26,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 103 [2018-01-30 00:07:26,072 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 00:07:26,103 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, End of recursive call: 10 dim-0 vars, and 1 xjuncts. [2018-01-30 00:07:26,103 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 11 variables, input treesize:67, output treesize:66 [2018-01-30 00:07:43,548 WARN L143 SmtUtils]: Spent 160ms on a formula simplification that was a NOOP. DAG size: 46 Received shutdown request... [2018-01-30 00:07:49,261 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-30 00:07:49,261 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 00:07:49,264 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 00:07:49,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 12:07:49 BoogieIcfgContainer [2018-01-30 00:07:49,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 00:07:49,265 INFO L168 Benchmark]: Toolchain (without parser) took 84029.53 ms. Allocated memory was 151.5 MB in the beginning and 300.9 MB in the end (delta: 149.4 MB). Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 151.1 MB. Max. memory is 5.3 GB. [2018-01-30 00:07:49,265 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 151.5 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 00:07:49,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 107.45 ms. Allocated memory is still 151.5 MB. Free memory was 116.3 MB in the beginning and 108.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 5.3 GB. [2018-01-30 00:07:49,265 INFO L168 Benchmark]: Boogie Preprocessor took 17.23 ms. Allocated memory is still 151.5 MB. Free memory was 108.1 MB in the beginning and 106.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. [2018-01-30 00:07:49,266 INFO L168 Benchmark]: RCFGBuilder took 290.85 ms. Allocated memory is still 151.5 MB. Free memory was 106.5 MB in the beginning and 94.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. [2018-01-30 00:07:49,266 INFO L168 Benchmark]: TraceAbstraction took 83611.85 ms. Allocated memory was 151.5 MB in the beginning and 300.9 MB in the end (delta: 149.4 MB). Free memory was 94.1 MB in the beginning and 114.8 MB in the end (delta: -20.7 MB). Peak memory consumption was 128.8 MB. Max. memory is 5.3 GB. [2018-01-30 00:07:49,267 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 151.5 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 107.45 ms. Allocated memory is still 151.5 MB. Free memory was 116.3 MB in the beginning and 108.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.23 ms. Allocated memory is still 151.5 MB. Free memory was 108.1 MB in the beginning and 106.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. * RCFGBuilder took 290.85 ms. Allocated memory is still 151.5 MB. Free memory was 106.5 MB in the beginning and 94.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 83611.85 ms. Allocated memory was 151.5 MB in the beginning and 300.9 MB in the end (delta: 149.4 MB). Free memory was 94.1 MB in the beginning and 114.8 MB in the end (delta: -20.7 MB). Peak memory consumption was 128.8 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 analyzing trace of length 176 with TraceHistMax 17, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 43 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 1 error locations. TIMEOUT Result, 83.5s OverallTime, 17 OverallIterations, 17 TraceHistogramMax, 38.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 546 SDtfs, 1140 SDslu, 3221 SDs, 0 SdLazy, 3070 SolverSat, 379 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1609 GetRequests, 1382 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 41.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=16, 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: 0.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 369 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 2834 NumberOfCodeBlocks, 2691 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 2804 ConstructedInterpolants, 38 QuantifiedInterpolants, 800840 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1858 ConjunctsInSsa, 158 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 2838/8722 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_two_index_02_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-30_00-07-49-271.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_two_index_02_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_00-07-49-271.csv Completed graceful shutdown