java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:26:26,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:26,876 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:26,888 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:26,888 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:26,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:26,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:26,892 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:26,894 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:26,895 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:26,896 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:26:26,896 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:26:26,897 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:26:26,898 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:26:26,899 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:26:26,900 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:26:26,901 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:26:26,903 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:26:26,905 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:26:26,907 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:26:26,908 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:26:26,909 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:26:26,915 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:26:26,932 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:26:26,941 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:26,942 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:26,942 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:26,943 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:26,943 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:26,943 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:26,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:26,944 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:26,944 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:26,944 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:26,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:26,945 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:26,945 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:26,946 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:26,946 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:27,011 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:27,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:27,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:27,030 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:27,030 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:27,031 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl [2018-10-10 15:26:27,032 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl' [2018-10-10 15:26:27,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:27,116 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:27,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:27,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:27,121 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:27,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/1) ... [2018-10-10 15:26:27,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/1) ... [2018-10-10 15:26:27,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/1) ... [2018-10-10 15:26:27,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/1) ... [2018-10-10 15:26:27,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/1) ... [2018-10-10 15:26:27,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/1) ... [2018-10-10 15:26:27,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/1) ... [2018-10-10 15:26:27,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:27,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:27,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:27,189 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:27,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:26:27,258 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:28,093 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:28,094 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:28 BoogieIcfgContainer [2018-10-10 15:26:28,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:28,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:28,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:28,101 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:28,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:27" (1/2) ... [2018-10-10 15:26:28,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6858b353 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:28, skipping insertion in model container [2018-10-10 15:26:28,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:28" (2/2) ... [2018-10-10 15:26:28,105 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl [2018-10-10 15:26:28,117 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:28,126 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:28,143 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:28,172 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:28,173 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:28,173 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:28,173 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:28,173 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:28,173 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:28,174 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:28,175 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:28,175 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2018-10-10 15:26:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-10 15:26:28,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:28,213 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:28,214 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:28,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:28,219 INFO L82 PathProgramCache]: Analyzing trace with hash 2104295825, now seen corresponding path program 1 times [2018-10-10 15:26:28,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:28,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:28,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:28,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:28,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:28,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:28,722 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 9 states. [2018-10-10 15:26:29,273 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-10 15:26:29,538 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-10 15:26:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:30,292 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-10-10 15:26:30,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:26:30,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-10-10 15:26:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:30,318 INFO L225 Difference]: With dead ends: 221 [2018-10-10 15:26:30,319 INFO L226 Difference]: Without dead ends: 221 [2018-10-10 15:26:30,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:26:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-10 15:26:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 133. [2018-10-10 15:26:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-10 15:26:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2018-10-10 15:26:30,375 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 37 [2018-10-10 15:26:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:30,376 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2018-10-10 15:26:30,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2018-10-10 15:26:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-10 15:26:30,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:30,381 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:30,381 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:30,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:30,382 INFO L82 PathProgramCache]: Analyzing trace with hash -34960895, now seen corresponding path program 1 times [2018-10-10 15:26:30,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:30,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:30,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:30,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:30,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:30,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:30,793 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand 9 states. [2018-10-10 15:26:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:31,607 INFO L93 Difference]: Finished difference Result 289 states and 294 transitions. [2018-10-10 15:26:31,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 15:26:31,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2018-10-10 15:26:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:31,616 INFO L225 Difference]: With dead ends: 289 [2018-10-10 15:26:31,616 INFO L226 Difference]: Without dead ends: 257 [2018-10-10 15:26:31,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-10-10 15:26:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-10 15:26:31,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 119. [2018-10-10 15:26:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-10 15:26:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-10 15:26:31,636 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 69 [2018-10-10 15:26:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:31,638 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-10 15:26:31,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-10 15:26:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-10 15:26:31,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:31,641 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:31,641 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:31,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:31,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2004966493, now seen corresponding path program 1 times [2018-10-10 15:26:31,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:31,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:31,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:31,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:31,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:31,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:31,704 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 3 states. [2018-10-10 15:26:31,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:31,762 INFO L93 Difference]: Finished difference Result 187 states and 190 transitions. [2018-10-10 15:26:31,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:31,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2018-10-10 15:26:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:31,764 INFO L225 Difference]: With dead ends: 187 [2018-10-10 15:26:31,765 INFO L226 Difference]: Without dead ends: 187 [2018-10-10 15:26:31,766 INFO L605 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 [2018-10-10 15:26:31,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-10 15:26:31,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 153. [2018-10-10 15:26:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-10 15:26:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2018-10-10 15:26:31,776 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 80 [2018-10-10 15:26:31,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:31,777 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2018-10-10 15:26:31,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2018-10-10 15:26:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-10 15:26:31,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:31,779 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:31,780 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:31,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:31,780 INFO L82 PathProgramCache]: Analyzing trace with hash 491392829, now seen corresponding path program 1 times [2018-10-10 15:26:31,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:32,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:32,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-10 15:26:32,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:32,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:32,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:32,122 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand 11 states. [2018-10-10 15:26:32,865 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2018-10-10 15:26:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:33,521 INFO L93 Difference]: Finished difference Result 361 states and 366 transitions. [2018-10-10 15:26:33,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-10 15:26:33,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2018-10-10 15:26:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:33,528 INFO L225 Difference]: With dead ends: 361 [2018-10-10 15:26:33,529 INFO L226 Difference]: Without dead ends: 361 [2018-10-10 15:26:33,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:26:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-10 15:26:33,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 210. [2018-10-10 15:26:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-10 15:26:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 214 transitions. [2018-10-10 15:26:33,556 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 214 transitions. Word has length 80 [2018-10-10 15:26:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:33,559 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 214 transitions. [2018-10-10 15:26:33,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 214 transitions. [2018-10-10 15:26:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-10 15:26:33,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:33,567 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:33,567 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:33,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:33,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1799743405, now seen corresponding path program 1 times [2018-10-10 15:26:33,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:34,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:34,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:26:34,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:26:34,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:26:34,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:26:34,950 INFO L87 Difference]: Start difference. First operand 210 states and 214 transitions. Second operand 29 states. [2018-10-10 15:26:36,663 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-10-10 15:26:36,876 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:26:37,182 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2018-10-10 15:26:37,516 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2018-10-10 15:26:37,841 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2018-10-10 15:26:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:40,466 INFO L93 Difference]: Finished difference Result 334 states and 339 transitions. [2018-10-10 15:26:40,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-10 15:26:40,471 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 112 [2018-10-10 15:26:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:40,473 INFO L225 Difference]: With dead ends: 334 [2018-10-10 15:26:40,474 INFO L226 Difference]: Without dead ends: 334 [2018-10-10 15:26:40,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=538, Invalid=3002, Unknown=0, NotChecked=0, Total=3540 [2018-10-10 15:26:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-10-10 15:26:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 242. [2018-10-10 15:26:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-10 15:26:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 246 transitions. [2018-10-10 15:26:40,489 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 246 transitions. Word has length 112 [2018-10-10 15:26:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:40,492 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 246 transitions. [2018-10-10 15:26:40,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:26:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 246 transitions. [2018-10-10 15:26:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-10 15:26:40,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:40,500 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:40,501 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:40,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:40,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1739914033, now seen corresponding path program 1 times [2018-10-10 15:26:40,502 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:41,049 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-10 15:26:41,268 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-10 15:26:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:41,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:41,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-10 15:26:41,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-10 15:26:41,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-10 15:26:41,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:26:41,598 INFO L87 Difference]: Start difference. First operand 242 states and 246 transitions. Second operand 16 states. [2018-10-10 15:26:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:43,097 INFO L93 Difference]: Finished difference Result 501 states and 509 transitions. [2018-10-10 15:26:43,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-10 15:26:43,098 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2018-10-10 15:26:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:43,101 INFO L225 Difference]: With dead ends: 501 [2018-10-10 15:26:43,101 INFO L226 Difference]: Without dead ends: 501 [2018-10-10 15:26:43,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2018-10-10 15:26:43,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2018-10-10 15:26:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 337. [2018-10-10 15:26:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-10-10 15:26:43,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 344 transitions. [2018-10-10 15:26:43,112 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 344 transitions. Word has length 123 [2018-10-10 15:26:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:43,113 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 344 transitions. [2018-10-10 15:26:43,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-10 15:26:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 344 transitions. [2018-10-10 15:26:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-10 15:26:43,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:43,116 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:43,116 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:43,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:43,116 INFO L82 PathProgramCache]: Analyzing trace with hash 574881821, now seen corresponding path program 2 times [2018-10-10 15:26:43,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 15:26:43,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:43,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:43,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:43,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:43,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:43,188 INFO L87 Difference]: Start difference. First operand 337 states and 344 transitions. Second operand 3 states. [2018-10-10 15:26:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:43,209 INFO L93 Difference]: Finished difference Result 323 states and 326 transitions. [2018-10-10 15:26:43,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:43,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2018-10-10 15:26:43,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:43,211 INFO L225 Difference]: With dead ends: 323 [2018-10-10 15:26:43,212 INFO L226 Difference]: Without dead ends: 269 [2018-10-10 15:26:43,212 INFO L605 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 [2018-10-10 15:26:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-10 15:26:43,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 256. [2018-10-10 15:26:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-10 15:26:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 259 transitions. [2018-10-10 15:26:43,219 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 259 transitions. Word has length 144 [2018-10-10 15:26:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:43,219 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 259 transitions. [2018-10-10 15:26:43,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 259 transitions. [2018-10-10 15:26:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-10 15:26:43,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:43,221 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:43,222 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:43,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:43,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1998322783, now seen corresponding path program 1 times [2018-10-10 15:26:43,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:44,894 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2018-10-10 15:26:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:47,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:47,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-10 15:26:47,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-10 15:26:47,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-10 15:26:47,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2003, Unknown=0, NotChecked=0, Total=2162 [2018-10-10 15:26:47,057 INFO L87 Difference]: Start difference. First operand 256 states and 259 transitions. Second operand 47 states. [2018-10-10 15:26:48,037 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:26:49,124 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-10 15:26:49,380 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-10 15:26:49,725 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2018-10-10 15:26:50,008 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2018-10-10 15:26:50,391 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2018-10-10 15:26:50,729 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2018-10-10 15:26:50,926 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2018-10-10 15:26:51,102 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2018-10-10 15:26:51,354 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2018-10-10 15:26:51,512 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-10 15:26:51,827 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2018-10-10 15:26:51,988 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-10-10 15:26:52,742 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-10 15:26:53,792 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-10 15:26:54,441 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-10 15:26:54,936 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2018-10-10 15:26:55,213 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-10 15:26:55,416 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-10-10 15:26:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:56,053 INFO L93 Difference]: Finished difference Result 303 states and 305 transitions. [2018-10-10 15:26:56,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-10 15:26:56,053 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 155 [2018-10-10 15:26:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:56,054 INFO L225 Difference]: With dead ends: 303 [2018-10-10 15:26:56,055 INFO L226 Difference]: Without dead ends: 257 [2018-10-10 15:26:56,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=908, Invalid=7282, Unknown=0, NotChecked=0, Total=8190 [2018-10-10 15:26:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-10 15:26:56,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 242. [2018-10-10 15:26:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-10 15:26:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 244 transitions. [2018-10-10 15:26:56,062 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 244 transitions. Word has length 155 [2018-10-10 15:26:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:56,063 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 244 transitions. [2018-10-10 15:26:56,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-10 15:26:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 244 transitions. [2018-10-10 15:26:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-10 15:26:56,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:56,065 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:56,065 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:56,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:56,066 INFO L82 PathProgramCache]: Analyzing trace with hash -220048995, now seen corresponding path program 2 times [2018-10-10 15:26:56,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 23 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:57,050 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:57,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-10 15:26:57,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 15:26:57,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 15:26:57,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:26:57,051 INFO L87 Difference]: Start difference. First operand 242 states and 244 transitions. Second operand 22 states. [2018-10-10 15:26:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:58,806 INFO L93 Difference]: Finished difference Result 254 states and 255 transitions. [2018-10-10 15:26:58,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-10 15:26:58,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 166 [2018-10-10 15:26:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:58,810 INFO L225 Difference]: With dead ends: 254 [2018-10-10 15:26:58,810 INFO L226 Difference]: Without dead ends: 254 [2018-10-10 15:26:58,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=483, Invalid=2067, Unknown=0, NotChecked=0, Total=2550 [2018-10-10 15:26:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-10 15:26:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 242. [2018-10-10 15:26:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-10 15:26:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 243 transitions. [2018-10-10 15:26:58,817 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 243 transitions. Word has length 166 [2018-10-10 15:26:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:58,818 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 243 transitions. [2018-10-10 15:26:58,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 15:26:58,818 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 243 transitions. [2018-10-10 15:26:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-10 15:26:58,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:58,820 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:58,820 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:58,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:58,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1338201587, now seen corresponding path program 2 times [2018-10-10 15:26:58,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:01,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:01,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-10 15:27:01,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-10 15:27:01,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-10 15:27:01,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2141, Unknown=0, NotChecked=0, Total=2256 [2018-10-10 15:27:01,881 INFO L87 Difference]: Start difference. First operand 242 states and 243 transitions. Second operand 48 states. [2018-10-10 15:27:04,288 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 47 [2018-10-10 15:27:05,083 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 56 [2018-10-10 15:27:05,369 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2018-10-10 15:27:05,766 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2018-10-10 15:27:06,124 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 70 [2018-10-10 15:27:06,545 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 82 [2018-10-10 15:27:06,927 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2018-10-10 15:27:07,277 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2018-10-10 15:27:07,656 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 84 [2018-10-10 15:27:09,117 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-10 15:27:09,577 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2018-10-10 15:27:09,807 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2018-10-10 15:27:10,481 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2018-10-10 15:27:10,802 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2018-10-10 15:27:11,084 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2018-10-10 15:27:11,330 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2018-10-10 15:27:11,593 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-10 15:27:12,157 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2018-10-10 15:27:12,499 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2018-10-10 15:27:12,808 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2018-10-10 15:27:13,239 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2018-10-10 15:27:14,823 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-10-10 15:27:15,105 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2018-10-10 15:27:16,121 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2018-10-10 15:27:16,621 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2018-10-10 15:27:17,077 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2018-10-10 15:27:17,432 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 102 [2018-10-10 15:27:17,794 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2018-10-10 15:27:18,035 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2018-10-10 15:27:18,224 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2018-10-10 15:27:18,457 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2018-10-10 15:27:18,764 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2018-10-10 15:27:19,026 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2018-10-10 15:27:19,539 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2018-10-10 15:27:19,718 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-10-10 15:27:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:19,759 INFO L93 Difference]: Finished difference Result 346 states and 347 transitions. [2018-10-10 15:27:19,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-10 15:27:19,760 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 198 [2018-10-10 15:27:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:19,762 INFO L225 Difference]: With dead ends: 346 [2018-10-10 15:27:19,762 INFO L226 Difference]: Without dead ends: 300 [2018-10-10 15:27:19,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3302 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1405, Invalid=12401, Unknown=0, NotChecked=0, Total=13806 [2018-10-10 15:27:19,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-10-10 15:27:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 285. [2018-10-10 15:27:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-10-10 15:27:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-10-10 15:27:19,772 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 198 [2018-10-10 15:27:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:19,773 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-10-10 15:27:19,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-10 15:27:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-10-10 15:27:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-10 15:27:19,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:19,776 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:19,776 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:19,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:19,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1185908033, now seen corresponding path program 3 times [2018-10-10 15:27:19,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:22,020 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2018-10-10 15:27:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:30,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:30,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-10-10 15:27:30,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-10 15:27:30,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-10 15:27:30,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=6147, Unknown=0, NotChecked=0, Total=6480 [2018-10-10 15:27:30,113 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 81 states. [2018-10-10 15:27:31,824 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 39 [2018-10-10 15:27:32,300 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 45 [2018-10-10 15:27:32,703 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 37 [2018-10-10 15:27:33,037 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 22 [2018-10-10 15:27:33,350 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 25 [2018-10-10 15:27:33,700 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 28 [2018-10-10 15:27:34,015 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 30 [2018-10-10 15:27:34,448 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 37 [2018-10-10 15:27:34,865 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 45 [2018-10-10 15:27:35,322 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 52 [2018-10-10 15:27:35,949 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 67 [2018-10-10 15:27:36,487 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 69 [2018-10-10 15:27:37,355 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 83 [2018-10-10 15:27:38,653 WARN L178 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 264 DAG size of output: 90 [2018-10-10 15:27:39,590 WARN L178 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 96 [2018-10-10 15:27:40,465 WARN L178 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 100 [2018-10-10 15:27:41,383 WARN L178 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 135 [2018-10-10 15:27:42,335 WARN L178 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 131 [2018-10-10 15:27:43,217 WARN L178 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 141 [2018-10-10 15:27:44,140 WARN L178 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 146 [2018-10-10 15:27:45,003 WARN L178 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 145 [2018-10-10 15:27:45,601 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 79 [2018-10-10 15:27:46,349 WARN L178 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 94 [2018-10-10 15:27:47,042 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 86 [2018-10-10 15:27:47,342 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:27:47,773 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2018-10-10 15:27:48,177 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-10 15:27:48,525 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2018-10-10 15:27:49,127 WARN L178 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2018-10-10 15:27:49,755 WARN L178 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2018-10-10 15:27:50,459 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 87 [2018-10-10 15:27:51,330 WARN L178 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 102 [2018-10-10 15:27:52,290 WARN L178 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 117 [2018-10-10 15:27:53,379 WARN L178 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 122 [2018-10-10 15:27:53,946 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2018-10-10 15:27:54,576 WARN L178 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 112 [2018-10-10 15:27:55,385 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 141 [2018-10-10 15:27:56,271 WARN L178 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 140 [2018-10-10 15:27:57,315 WARN L178 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 153 [2018-10-10 15:27:58,427 WARN L178 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 166 [2018-10-10 15:27:59,102 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 120 [2018-10-10 15:27:59,685 WARN L178 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 108 [2018-10-10 15:28:00,229 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 97 [2018-10-10 15:28:00,866 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 101 [2018-10-10 15:28:01,453 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 103 [2018-10-10 15:28:02,750 WARN L178 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 177 [2018-10-10 15:28:03,954 WARN L178 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 180 [2018-10-10 15:28:04,964 WARN L178 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 168 [2018-10-10 15:28:05,244 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-10-10 15:28:05,541 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2018-10-10 15:28:05,886 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-10-10 15:28:06,239 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2018-10-10 15:28:07,358 WARN L178 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 182 [2018-10-10 15:28:08,580 WARN L178 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 187 [2018-10-10 15:28:09,665 WARN L178 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 190 [2018-10-10 15:28:10,769 WARN L178 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 191 [2018-10-10 15:28:11,241 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2018-10-10 15:28:11,682 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 107 [2018-10-10 15:28:12,054 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2018-10-10 15:28:13,106 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2018-10-10 15:28:13,399 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-10-10 15:28:13,701 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2018-10-10 15:28:14,308 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2018-10-10 15:28:16,660 WARN L178 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 160 [2018-10-10 15:28:17,497 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 146 [2018-10-10 15:28:17,944 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-10-10 15:28:18,347 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-10 15:28:18,599 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-10 15:28:18,910 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2018-10-10 15:28:19,252 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2018-10-10 15:28:19,677 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2018-10-10 15:28:20,483 WARN L178 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 162 [2018-10-10 15:28:20,975 WARN L178 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2018-10-10 15:28:21,592 WARN L178 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 112 [2018-10-10 15:28:22,051 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-10 15:28:22,445 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2018-10-10 15:28:22,951 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 120 [2018-10-10 15:28:23,566 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 117 [2018-10-10 15:28:24,428 WARN L178 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 161 [2018-10-10 15:28:25,134 WARN L178 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 125 [2018-10-10 15:28:25,815 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 135 [2018-10-10 15:28:26,642 WARN L178 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 151 [2018-10-10 15:28:27,014 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2018-10-10 15:28:27,894 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 161 [2018-10-10 15:28:28,212 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-10-10 15:28:29,194 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 166 [2018-10-10 15:28:29,626 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2018-10-10 15:28:30,011 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2018-10-10 15:28:30,417 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2018-10-10 15:28:31,371 WARN L178 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 148 [2018-10-10 15:28:32,274 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2018-10-10 15:28:33,323 WARN L178 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 138 [2018-10-10 15:28:33,761 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-10-10 15:28:34,479 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 131 [2018-10-10 15:28:34,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:34,493 INFO L93 Difference]: Finished difference Result 430 states and 432 transitions. [2018-10-10 15:28:34,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-10 15:28:34,493 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 241 [2018-10-10 15:28:34,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:34,497 INFO L225 Difference]: With dead ends: 430 [2018-10-10 15:28:34,497 INFO L226 Difference]: Without dead ends: 384 [2018-10-10 15:28:34,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8958 ImplicationChecksByTransitivity, 65.4s TimeCoverageRelationStatistics Valid=4178, Invalid=31354, Unknown=0, NotChecked=0, Total=35532 [2018-10-10 15:28:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-10 15:28:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 328. [2018-10-10 15:28:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-10-10 15:28:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2018-10-10 15:28:34,510 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 241 [2018-10-10 15:28:34,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:34,511 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2018-10-10 15:28:34,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-10 15:28:34,511 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2018-10-10 15:28:34,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-10 15:28:34,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:34,513 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:28:34,513 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:34,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1449944173, now seen corresponding path program 4 times [2018-10-10 15:28:34,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:35,169 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-10 15:28:35,356 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:28:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 0 proven. 389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:43,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:43,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-10-10 15:28:43,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-10 15:28:43,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-10 15:28:43,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=7151, Unknown=0, NotChecked=0, Total=7482 [2018-10-10 15:28:43,307 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand 87 states. [2018-10-10 15:28:46,728 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 45 [2018-10-10 15:28:47,189 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 59 [2018-10-10 15:28:47,869 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 70 [2018-10-10 15:28:48,318 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 76 [2018-10-10 15:28:49,015 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 82 [2018-10-10 15:28:49,513 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 86 [2018-10-10 15:28:50,001 WARN L178 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 96 [2018-10-10 15:28:50,434 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 92 [2018-10-10 15:28:50,993 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 96 [2018-10-10 15:28:51,463 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 95 [2018-10-10 15:28:51,935 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2018-10-10 15:28:52,293 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2018-10-10 15:28:52,617 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2018-10-10 15:28:53,233 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-10-10 15:28:53,433 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-10-10 15:28:53,748 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2018-10-10 15:28:54,117 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2018-10-10 15:28:54,432 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2018-10-10 15:28:54,850 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2018-10-10 15:28:55,222 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2018-10-10 15:28:55,607 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 80 [2018-10-10 15:28:55,972 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-10-10 15:28:56,343 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-10 15:28:56,754 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 91 [2018-10-10 15:28:57,398 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 96 [2018-10-10 15:28:57,854 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 103 [2018-10-10 15:28:58,178 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-10 15:28:58,437 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2018-10-10 15:28:58,749 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2018-10-10 15:28:59,179 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2018-10-10 15:28:59,881 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 96 [2018-10-10 15:29:00,366 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 105 [2018-10-10 15:29:00,759 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2018-10-10 15:29:01,916 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2018-10-10 15:29:02,494 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2018-10-10 15:29:02,740 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2018-10-10 15:29:02,959 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-10 15:29:03,571 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2018-10-10 15:29:04,074 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2018-10-10 15:29:05,914 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-10 15:29:07,309 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2018-10-10 15:29:07,613 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-10-10 15:29:09,085 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-10-10 15:29:10,693 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2018-10-10 15:29:11,457 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2018-10-10 15:29:12,261 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 101 [2018-10-10 15:29:12,765 WARN L178 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 106 [2018-10-10 15:29:13,145 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2018-10-10 15:29:13,406 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-10 15:29:13,747 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2018-10-10 15:29:14,012 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-10-10 15:29:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:29:14,215 INFO L93 Difference]: Finished difference Result 432 states and 433 transitions. [2018-10-10 15:29:14,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-10 15:29:14,218 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 284 [2018-10-10 15:29:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:29:14,220 INFO L225 Difference]: With dead ends: 432 [2018-10-10 15:29:14,220 INFO L226 Difference]: Without dead ends: 386 [2018-10-10 15:29:14,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 4 SyntacticMatches, 10 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9815 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=3458, Invalid=33984, Unknown=0, NotChecked=0, Total=37442 [2018-10-10 15:29:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-10-10 15:29:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 371. [2018-10-10 15:29:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-10 15:29:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-10-10 15:29:14,230 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 284 [2018-10-10 15:29:14,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:29:14,230 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-10-10 15:29:14,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-10 15:29:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-10-10 15:29:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-10 15:29:14,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:29:14,250 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:29:14,250 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:29:14,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:29:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash 374804193, now seen corresponding path program 5 times [2018-10-10 15:29:14,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:29:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:17,654 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2018-10-10 15:29:17,836 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2018-10-10 15:29:18,005 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-10-10 15:29:18,177 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-10-10 15:29:18,360 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-10-10 15:29:18,541 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-10-10 15:29:18,738 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2018-10-10 15:29:18,948 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2018-10-10 15:29:19,261 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-10 15:29:19,466 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2018-10-10 15:29:19,726 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2018-10-10 15:29:19,956 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2018-10-10 15:29:20,132 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2018-10-10 15:29:25,269 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2018-10-10 15:29:28,254 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 41 [2018-10-10 15:29:28,632 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 43 [2018-10-10 15:29:29,119 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 49 [2018-10-10 15:29:29,530 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 48 [2018-10-10 15:29:30,017 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 48 [2018-10-10 15:29:30,424 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2018-10-10 15:29:30,949 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 57 [2018-10-10 15:29:31,640 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2018-10-10 15:29:32,031 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2018-10-10 15:29:32,418 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2018-10-10 15:29:32,787 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2018-10-10 15:29:33,252 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-10 15:29:33,663 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-10 15:29:33,999 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2018-10-10 15:29:34,350 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2018-10-10 15:29:34,680 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2018-10-10 15:29:36,945 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2018-10-10 15:29:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 0 proven. 579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:29:39,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:29:39,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-10-10 15:29:39,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-10 15:29:39,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-10 15:29:39,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=13225, Unknown=0, NotChecked=0, Total=14042 [2018-10-10 15:29:39,372 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 119 states. [2018-10-10 15:29:42,099 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 37 [2018-10-10 15:29:42,564 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 43 [2018-10-10 15:29:42,930 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 36 [2018-10-10 15:29:44,071 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 28 [2018-10-10 15:29:44,395 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 30 [2018-10-10 15:29:44,921 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 36 [2018-10-10 15:29:45,447 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 43 [2018-10-10 15:29:45,940 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 51 [2018-10-10 15:29:46,674 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 66 [2018-10-10 15:29:47,285 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 68 [2018-10-10 15:29:48,288 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 80 [2018-10-10 15:29:49,050 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 88 [2018-10-10 15:29:50,124 WARN L178 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 94 [2018-10-10 15:29:51,022 WARN L178 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 98 [2018-10-10 15:29:51,730 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 114 [2018-10-10 15:29:52,308 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 110 [2018-10-10 15:29:52,991 WARN L178 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 114 [2018-10-10 15:29:53,784 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 118 [2018-10-10 15:29:54,473 WARN L178 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 118 [2018-10-10 15:29:55,445 WARN L178 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 131 [2018-10-10 15:29:55,956 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 91 [2018-10-10 15:29:56,627 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 110 [2018-10-10 15:29:57,210 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 101 [2018-10-10 15:29:57,573 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-10-10 15:29:57,988 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2018-10-10 15:29:58,480 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2018-10-10 15:29:58,860 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2018-10-10 15:29:59,476 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2018-10-10 15:29:59,980 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2018-10-10 15:30:00,511 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 82 [2018-10-10 15:30:01,118 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 92 [2018-10-10 15:30:01,716 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 104 [2018-10-10 15:30:02,410 WARN L178 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 112 [2018-10-10 15:30:02,958 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:30:03,431 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2018-10-10 15:30:03,880 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 93 [2018-10-10 15:30:04,602 WARN L178 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2018-10-10 15:30:05,102 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 103 [2018-10-10 15:30:05,543 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2018-10-10 15:30:05,902 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2018-10-10 15:30:06,300 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2018-10-10 15:30:06,779 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 82 [2018-10-10 15:30:07,811 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 128 [2018-10-10 15:30:08,580 WARN L178 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 135 [2018-10-10 15:30:09,169 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 122 [2018-10-10 15:30:09,688 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-10-10 15:30:09,987 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:30:10,296 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2018-10-10 15:30:10,647 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-10 15:30:11,066 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-10-10 15:30:11,450 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2018-10-10 15:30:11,866 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2018-10-10 15:30:12,380 WARN L178 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 102 [2018-10-10 15:30:12,940 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 109 [2018-10-10 15:30:13,602 WARN L178 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 125 [2018-10-10 15:30:14,374 WARN L178 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 136 [2018-10-10 15:30:15,149 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 139 [2018-10-10 15:30:16,002 WARN L178 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 143 [2018-10-10 15:30:16,597 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 89 [2018-10-10 15:30:17,129 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 101 [2018-10-10 15:30:17,579 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 94 [2018-10-10 15:30:18,796 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2018-10-10 15:30:19,068 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2018-10-10 15:30:19,367 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2018-10-10 15:30:19,695 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 68 [2018-10-10 15:30:20,064 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2018-10-10 15:30:20,481 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 84 [2018-10-10 15:30:21,082 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-10 15:30:21,330 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2018-10-10 15:30:21,670 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2018-10-10 15:30:21,967 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2018-10-10 15:30:22,246 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2018-10-10 15:30:22,500 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2018-10-10 15:30:22,791 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2018-10-10 15:30:23,487 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 126 [2018-10-10 15:30:24,161 WARN L178 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 128 [2018-10-10 15:30:24,706 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 115 [2018-10-10 15:30:25,375 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-10 15:30:25,636 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-10 15:30:25,979 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-10-10 15:30:26,384 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2018-10-10 15:30:26,753 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-10 15:30:27,227 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2018-10-10 15:30:27,789 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 97 [2018-10-10 15:30:28,386 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 99 [2018-10-10 15:30:28,872 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2018-10-10 15:30:29,613 WARN L178 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 95 [2018-10-10 15:30:30,535 WARN L178 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 105 [2018-10-10 15:30:31,695 WARN L178 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 110 [2018-10-10 15:30:32,769 WARN L178 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 115 [2018-10-10 15:30:33,570 WARN L178 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 106 [2018-10-10 15:30:34,267 WARN L178 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 101 [2018-10-10 15:30:35,379 WARN L178 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 144 [2018-10-10 15:30:36,697 WARN L178 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 216 DAG size of output: 154 [2018-10-10 15:30:37,978 WARN L178 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 157 [2018-10-10 15:30:39,294 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 232 DAG size of output: 160 [2018-10-10 15:30:40,425 WARN L178 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 136 [2018-10-10 15:30:41,661 WARN L178 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 147 [2018-10-10 15:30:42,242 WARN L178 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 79 [2018-10-10 15:30:43,033 WARN L178 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 102 [2018-10-10 15:30:43,766 WARN L178 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 95 [2018-10-10 15:30:44,267 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2018-10-10 15:30:44,549 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2018-10-10 15:30:44,847 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2018-10-10 15:30:45,291 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2018-10-10 15:30:45,771 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-10 15:30:46,304 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 86 [2018-10-10 15:30:46,996 WARN L178 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 97 [2018-10-10 15:30:47,814 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 115 [2018-10-10 15:30:48,288 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2018-10-10 15:30:48,736 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2018-10-10 15:30:49,253 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 114 [2018-10-10 15:30:49,781 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2018-10-10 15:30:50,390 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2018-10-10 15:30:50,979 WARN L178 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 119 [2018-10-10 15:30:51,294 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-10-10 15:30:51,597 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2018-10-10 15:30:52,124 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-10 15:30:52,571 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:30:54,738 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 132 [2018-10-10 15:30:55,198 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2018-10-10 15:30:55,938 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 120 [2018-10-10 15:30:56,895 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-10 15:30:57,219 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-10-10 15:30:57,651 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-10 15:30:58,056 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2018-10-10 15:30:58,401 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2018-10-10 15:30:58,771 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2018-10-10 15:30:59,609 WARN L178 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 159 [2018-10-10 15:31:00,003 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2018-10-10 15:31:00,575 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2018-10-10 15:31:01,137 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2018-10-10 15:31:02,332 WARN L178 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 154 [2018-10-10 15:31:02,592 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2018-10-10 15:31:03,085 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2018-10-10 15:31:04,028 WARN L178 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 163 [2018-10-10 15:31:04,456 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2018-10-10 15:31:05,306 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 153 [2018-10-10 15:31:06,281 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 165 [2018-10-10 15:31:07,371 WARN L178 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 158 [2018-10-10 15:31:07,933 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2018-10-10 15:31:08,523 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2018-10-10 15:31:09,322 WARN L178 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 154 [2018-10-10 15:31:09,639 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-10-10 15:31:10,601 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 162 [2018-10-10 15:31:10,882 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2018-10-10 15:31:11,848 WARN L178 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 167 [2018-10-10 15:31:12,426 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2018-10-10 15:31:12,815 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-10 15:31:13,318 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2018-10-10 15:31:13,984 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 112 [2018-10-10 15:31:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:31:15,854 INFO L93 Difference]: Finished difference Result 525 states and 527 transitions. [2018-10-10 15:31:15,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-10 15:31:15,854 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 327 [2018-10-10 15:31:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:31:15,858 INFO L225 Difference]: With dead ends: 525 [2018-10-10 15:31:15,858 INFO L226 Difference]: Without dead ends: 479 [2018-10-10 15:31:15,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21515 ImplicationChecksByTransitivity, 104.4s TimeCoverageRelationStatistics Valid=9108, Invalid=75282, Unknown=0, NotChecked=0, Total=84390 [2018-10-10 15:31:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-10-10 15:31:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 414. [2018-10-10 15:31:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-10-10 15:31:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 415 transitions. [2018-10-10 15:31:15,870 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 415 transitions. Word has length 327 [2018-10-10 15:31:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:31:15,870 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 415 transitions. [2018-10-10 15:31:15,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-10 15:31:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 415 transitions. [2018-10-10 15:31:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-10 15:31:15,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:31:15,873 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:31:15,873 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:31:15,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:31:15,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1015748301, now seen corresponding path program 6 times [2018-10-10 15:31:15,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:31:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:31:17,026 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:31:17,277 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-10 15:31:17,581 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-10 15:31:17,928 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-10-10 15:31:18,355 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-10-10 15:31:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 27 proven. 773 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-10 15:31:37,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:31:37,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-10-10 15:31:37,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-10 15:31:37,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-10 15:31:37,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=16467, Unknown=0, NotChecked=0, Total=17030 [2018-10-10 15:31:37,630 INFO L87 Difference]: Start difference. First operand 414 states and 415 transitions. Second operand 131 states. [2018-10-10 15:31:40,351 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2018-10-10 15:31:42,064 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 36 [2018-10-10 15:31:42,455 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 44 [2018-10-10 15:31:42,950 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 52 [2018-10-10 15:31:43,695 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 68 [2018-10-10 15:31:44,264 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 70 [2018-10-10 15:31:45,282 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 83 [2018-10-10 15:31:46,064 WARN L178 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 94 [2018-10-10 15:31:47,189 WARN L178 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 100 [2018-10-10 15:31:48,082 WARN L178 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 104 [2018-10-10 15:31:48,910 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 112 [2018-10-10 15:31:49,565 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 108 [2018-10-10 15:31:50,489 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 112 [2018-10-10 15:31:51,300 WARN L178 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 108 [2018-10-10 15:31:52,117 WARN L178 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 84 [2018-10-10 15:31:52,849 WARN L178 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 98 [2018-10-10 15:31:53,587 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 88 [2018-10-10 15:31:54,158 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-10-10 15:31:54,530 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-10-10 15:31:54,835 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2018-10-10 15:31:55,424 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2018-10-10 15:31:55,962 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2018-10-10 15:31:56,557 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2018-10-10 15:31:57,318 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 106 [2018-10-10 15:31:58,151 WARN L178 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 120 [2018-10-10 15:31:59,047 WARN L178 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 124 [2018-10-10 15:31:59,731 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2018-10-10 15:32:00,430 WARN L178 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 104 [2018-10-10 15:32:01,780 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 157 DAG size of output: 123 [2018-10-10 15:32:02,620 WARN L178 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 120 [2018-10-10 15:32:03,683 WARN L178 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 128 [2018-10-10 15:32:04,585 WARN L178 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 137 [2018-10-10 15:32:05,271 WARN L178 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 107 [2018-10-10 15:32:05,802 WARN L178 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2018-10-10 15:32:06,611 WARN L178 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 103 [2018-10-10 15:32:07,238 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 105 [2018-10-10 15:32:08,301 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 124 [2018-10-10 15:32:09,241 WARN L178 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 133 [2018-10-10 15:32:09,940 WARN L178 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 120 [2018-10-10 15:32:10,806 WARN L178 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 120 [2018-10-10 15:32:11,662 WARN L178 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 124 [2018-10-10 15:32:12,542 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 98 [2018-10-10 15:32:13,092 WARN L178 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 113 [2018-10-10 15:32:13,649 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 106 [2018-10-10 15:32:14,539 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-10 15:32:14,884 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-10-10 15:32:15,273 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2018-10-10 15:32:15,728 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2018-10-10 15:32:16,264 WARN L178 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 107 [2018-10-10 15:32:16,830 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 110 [2018-10-10 15:32:17,185 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2018-10-10 15:32:17,643 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2018-10-10 15:32:18,228 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 111 [2018-10-10 15:32:18,843 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2018-10-10 15:32:19,450 WARN L178 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 116 [2018-10-10 15:32:20,068 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 124 [2018-10-10 15:32:20,566 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 100 [2018-10-10 15:32:21,006 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2018-10-10 15:32:21,474 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 96 [2018-10-10 15:32:22,561 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2018-10-10 15:32:22,866 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-10 15:32:23,934 WARN L178 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 102 [2018-10-10 15:32:24,979 WARN L178 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2018-10-10 15:32:25,758 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2018-10-10 15:32:26,320 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2018-10-10 15:32:26,904 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2018-10-10 15:32:27,285 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-10-10 15:32:27,546 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2018-10-10 15:32:27,909 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-10-10 15:32:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:32:28,075 INFO L93 Difference]: Finished difference Result 423 states and 424 transitions. [2018-10-10 15:32:28,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-10 15:32:28,075 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 370 [2018-10-10 15:32:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:32:28,077 INFO L225 Difference]: With dead ends: 423 [2018-10-10 15:32:28,077 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:32:28,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 10 SyntacticMatches, 13 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10605 ImplicationChecksByTransitivity, 59.0s TimeCoverageRelationStatistics Valid=4021, Invalid=41561, Unknown=0, NotChecked=0, Total=45582 [2018-10-10 15:32:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:32:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:32:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:32:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:32:28,080 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 370 [2018-10-10 15:32:28,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:32:28,081 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:32:28,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-10 15:32:28,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:32:28,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:32:28,087 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:32:28 BoogieIcfgContainer [2018-10-10 15:32:28,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:32:28,088 INFO L168 Benchmark]: Toolchain (without parser) took 360972.85 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -260.0 MB). Free memory was 1.4 GB in the beginning and 932.4 MB in the end (delta: 516.0 MB). Peak memory consumption was 255.9 MB. Max. memory is 7.1 GB. [2018-10-10 15:32:28,089 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:32:28,089 INFO L168 Benchmark]: Boogie Preprocessor took 67.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:32:28,089 INFO L168 Benchmark]: RCFGBuilder took 906.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:32:28,090 INFO L168 Benchmark]: TraceAbstraction took 359990.93 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -260.0 MB). Free memory was 1.4 GB in the beginning and 932.4 MB in the end (delta: 484.3 MB). Peak memory consumption was 224.2 MB. Max. memory is 7.1 GB. [2018-10-10 15:32:28,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 906.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 359990.93 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -260.0 MB). Free memory was 1.4 GB in the beginning and 932.4 MB in the end (delta: 484.3 MB). Peak memory consumption was 224.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 1 error locations. SAFE Result, 359.9s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 281.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1407 SDtfs, 28156 SDslu, 24242 SDs, 0 SdLazy, 44919 SolverSat, 1927 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1369 GetRequests, 47 SyntacticMatches, 41 SemanticMatches, 1281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57563 ImplicationChecksByTransitivity, 294.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 858 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 73.6s InterpolantComputationTime, 2386 NumberOfCodeBlocks, 2386 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2372 ConstructedInterpolants, 0 QuantifiedInterpolants, 18253290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 107/2381 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-32-28-099.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_39.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-32-28-099.csv Received shutdown request...