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_43.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:26:45,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:45,934 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:45,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:45,953 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:45,955 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:45,956 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:45,959 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:45,960 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:45,962 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:45,963 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:26:45,992 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 15:26:46,001 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:46,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:46,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:46,002 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:46,002 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:46,002 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:46,003 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:46,003 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:46,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:46,004 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:46,004 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:46,004 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:46,004 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:46,005 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:46,005 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:46,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:46,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:46,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:46,064 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:46,064 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:46,065 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl [2018-10-10 15:26:46,066 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl' [2018-10-10 15:26:46,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:46,141 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:46,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:46,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:46,142 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:46,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (1/1) ... [2018-10-10 15:26:46,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (1/1) ... [2018-10-10 15:26:46,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (1/1) ... [2018-10-10 15:26:46,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (1/1) ... [2018-10-10 15:26:46,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (1/1) ... [2018-10-10 15:26:46,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (1/1) ... [2018-10-10 15:26:46,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (1/1) ... [2018-10-10 15:26:46,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:46,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:46,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:46,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:46,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (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 15:26:46,286 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:47,089 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:47,092 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:47 BoogieIcfgContainer [2018-10-10 15:26:47,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:47,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:47,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:47,098 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:46" (1/2) ... [2018-10-10 15:26:47,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c8a4ba and model type alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:47, skipping insertion in model container [2018-10-10 15:26:47,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:47" (2/2) ... [2018-10-10 15:26:47,102 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl [2018-10-10 15:26:47,113 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:47,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:47,141 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:47,175 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:47,176 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:47,176 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:47,177 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:47,177 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:47,177 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:47,177 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:47,177 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:47,177 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:47,206 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2018-10-10 15:26:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-10 15:26:47,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:47,219 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, 1, 1, 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 15:26:47,221 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:47,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:47,227 INFO L82 PathProgramCache]: Analyzing trace with hash -287333896, now seen corresponding path program 1 times [2018-10-10 15:26:47,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:47,907 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 15:26:47,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:47,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:26:47,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:47,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:47,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:47,936 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 11 states. [2018-10-10 15:26:48,373 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-10 15:26:48,541 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-10 15:26:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:50,249 INFO L93 Difference]: Finished difference Result 259 states and 264 transitions. [2018-10-10 15:26:50,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-10 15:26:50,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2018-10-10 15:26:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:50,266 INFO L225 Difference]: With dead ends: 259 [2018-10-10 15:26:50,266 INFO L226 Difference]: Without dead ends: 163 [2018-10-10 15:26:50,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:26:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-10 15:26:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 139. [2018-10-10 15:26:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-10 15:26:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-10-10 15:26:50,314 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 63 [2018-10-10 15:26:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:50,315 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-10-10 15:26:50,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-10-10 15:26:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-10 15:26:50,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:50,321 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, 1, 1, 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 15:26:50,321 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:50,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:50,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1820774244, now seen corresponding path program 1 times [2018-10-10 15:26:50,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:51,465 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 15:26:51,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:51,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-10 15:26:51,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-10 15:26:51,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-10 15:26:51,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2018-10-10 15:26:51,469 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 27 states. [2018-10-10 15:26:53,741 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-10 15:26:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:56,936 INFO L93 Difference]: Finished difference Result 363 states and 370 transitions. [2018-10-10 15:26:56,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-10 15:26:56,938 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2018-10-10 15:26:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:56,942 INFO L225 Difference]: With dead ends: 363 [2018-10-10 15:26:56,942 INFO L226 Difference]: Without dead ends: 271 [2018-10-10 15:26:56,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=538, Invalid=3494, Unknown=0, NotChecked=0, Total=4032 [2018-10-10 15:26:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-10 15:26:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 182. [2018-10-10 15:26:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-10 15:26:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2018-10-10 15:26:56,959 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 106 [2018-10-10 15:26:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:56,960 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2018-10-10 15:26:56,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-10 15:26:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2018-10-10 15:26:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-10 15:26:56,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:56,962 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, 1, 1, 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 15:26:56,963 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:56,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:56,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1814688900, now seen corresponding path program 1 times [2018-10-10 15:26:56,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:57,023 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 15:26:57,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:57,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:57,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:57,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:57,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:57,025 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand 3 states. [2018-10-10 15:26:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:57,044 INFO L93 Difference]: Finished difference Result 270 states and 273 transitions. [2018-10-10 15:26:57,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:57,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2018-10-10 15:26:57,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:57,049 INFO L225 Difference]: With dead ends: 270 [2018-10-10 15:26:57,049 INFO L226 Difference]: Without dead ends: 270 [2018-10-10 15:26:57,049 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 15:26:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-10-10 15:26:57,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 216. [2018-10-10 15:26:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-10 15:26:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 219 transitions. [2018-10-10 15:26:57,063 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 219 transitions. Word has length 106 [2018-10-10 15:26:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:57,063 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 219 transitions. [2018-10-10 15:26:57,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 219 transitions. [2018-10-10 15:26:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-10 15:26:57,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:57,067 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, 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] [2018-10-10 15:26:57,067 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:57,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1455552120, now seen corresponding path program 2 times [2018-10-10 15:26:57,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:57,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:57,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:57,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:57,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:57,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:57,177 INFO L87 Difference]: Start difference. First operand 216 states and 219 transitions. Second operand 3 states. [2018-10-10 15:26:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:57,200 INFO L93 Difference]: Finished difference Result 260 states and 261 transitions. [2018-10-10 15:26:57,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:57,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2018-10-10 15:26:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:57,203 INFO L225 Difference]: With dead ends: 260 [2018-10-10 15:26:57,203 INFO L226 Difference]: Without dead ends: 258 [2018-10-10 15:26:57,204 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 15:26:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-10 15:26:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 225. [2018-10-10 15:26:57,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-10 15:26:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-10-10 15:26:57,215 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 149 [2018-10-10 15:26:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:57,215 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-10-10 15:26:57,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-10-10 15:26:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-10 15:26:57,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:57,218 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, 1, 1, 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 15:26:57,219 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:57,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:57,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1449466776, now seen corresponding path program 1 times [2018-10-10 15:26:57,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:59,048 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 15:26:59,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:59,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-10 15:26:59,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-10 15:26:59,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-10 15:26:59,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1511, Unknown=0, NotChecked=0, Total=1640 [2018-10-10 15:26:59,050 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 41 states. [2018-10-10 15:27:00,777 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:27:00,946 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-10 15:27:01,273 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-10 15:27:01,520 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-10 15:27:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:05,912 INFO L93 Difference]: Finished difference Result 402 states and 405 transitions. [2018-10-10 15:27:05,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-10 15:27:05,915 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 149 [2018-10-10 15:27:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:05,918 INFO L225 Difference]: With dead ends: 402 [2018-10-10 15:27:05,919 INFO L226 Difference]: Without dead ends: 402 [2018-10-10 15:27:05,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1059, Invalid=7497, Unknown=0, NotChecked=0, Total=8556 [2018-10-10 15:27:05,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-10-10 15:27:05,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 288. [2018-10-10 15:27:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-10-10 15:27:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 291 transitions. [2018-10-10 15:27:05,931 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 291 transitions. Word has length 149 [2018-10-10 15:27:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:05,932 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 291 transitions. [2018-10-10 15:27:05,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-10 15:27:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 291 transitions. [2018-10-10 15:27:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-10 15:27:05,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:05,935 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:05,936 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:05,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:05,936 INFO L82 PathProgramCache]: Analyzing trace with hash 961014568, now seen corresponding path program 1 times [2018-10-10 15:27:05,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-10 15:27:06,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:06,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-10 15:27:06,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:27:06,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:27:06,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:27:06,780 INFO L87 Difference]: Start difference. First operand 288 states and 291 transitions. Second operand 11 states. [2018-10-10 15:27:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:07,441 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2018-10-10 15:27:07,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-10 15:27:07,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 181 [2018-10-10 15:27:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:07,445 INFO L225 Difference]: With dead ends: 299 [2018-10-10 15:27:07,445 INFO L226 Difference]: Without dead ends: 236 [2018-10-10 15:27:07,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2018-10-10 15:27:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-10 15:27:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-10 15:27:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-10 15:27:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2018-10-10 15:27:07,452 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 181 [2018-10-10 15:27:07,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:07,453 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2018-10-10 15:27:07,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:27:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2018-10-10 15:27:07,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-10 15:27:07,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:07,456 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, 1, 1, 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 15:27:07,456 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:07,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:07,456 INFO L82 PathProgramCache]: Analyzing trace with hash -177106492, now seen corresponding path program 2 times [2018-10-10 15:27:07,457 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:08,227 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-10 15:27:08,578 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:27:09,612 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2018-10-10 15:27:10,087 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-10-10 15:27:10,320 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-10-10 15:27:10,804 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2018-10-10 15:27:11,140 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-10 15:27:11,279 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-10-10 15:27:11,507 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2018-10-10 15:27:11,743 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-10 15:27:11,944 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-10 15:27:12,226 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-10 15:27:12,402 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2018-10-10 15:27:13,334 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2018-10-10 15:27:13,531 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-10 15:27:13,712 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-10-10 15:27:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:16,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:16,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-10 15:27:16,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-10 15:27:16,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-10 15:27:16,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3924, Unknown=0, NotChecked=0, Total=4160 [2018-10-10 15:27:16,439 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand 65 states. [2018-10-10 15:27:18,759 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-10 15:27:19,627 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2018-10-10 15:27:19,879 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2018-10-10 15:27:20,145 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2018-10-10 15:27:20,523 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 72 [2018-10-10 15:27:20,816 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2018-10-10 15:27:21,236 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2018-10-10 15:27:21,542 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2018-10-10 15:27:22,079 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2018-10-10 15:27:22,408 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2018-10-10 15:27:23,081 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2018-10-10 15:27:23,436 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2018-10-10 15:27:23,777 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2018-10-10 15:27:24,079 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 51 [2018-10-10 15:27:24,496 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 54 [2018-10-10 15:27:25,219 WARN L178 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 63 [2018-10-10 15:27:25,684 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 56 [2018-10-10 15:27:26,244 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2018-10-10 15:27:26,440 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2018-10-10 15:27:26,794 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 64 [2018-10-10 15:27:27,185 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 69 [2018-10-10 15:27:27,514 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 74 [2018-10-10 15:27:28,273 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 86 [2018-10-10 15:27:28,789 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 91 [2018-10-10 15:27:29,280 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 97 [2018-10-10 15:27:29,810 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 100 [2018-10-10 15:27:30,296 WARN L178 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 103 [2018-10-10 15:27:30,617 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 69 [2018-10-10 15:27:31,353 WARN L178 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2018-10-10 15:27:31,702 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2018-10-10 15:27:32,164 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 82 [2018-10-10 15:27:32,578 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 85 [2018-10-10 15:27:33,042 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 91 [2018-10-10 15:27:33,351 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-10 15:27:33,712 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-10 15:27:34,092 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2018-10-10 15:27:34,414 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-10-10 15:27:35,050 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-10 15:27:35,239 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-10 15:27:35,454 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-10-10 15:27:35,790 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2018-10-10 15:27:36,052 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2018-10-10 15:27:36,362 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2018-10-10 15:27:36,633 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2018-10-10 15:27:36,999 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2018-10-10 15:27:37,356 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2018-10-10 15:27:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:40,609 INFO L93 Difference]: Finished difference Result 370 states and 372 transitions. [2018-10-10 15:27:40,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-10 15:27:40,610 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 192 [2018-10-10 15:27:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:40,612 INFO L225 Difference]: With dead ends: 370 [2018-10-10 15:27:40,613 INFO L226 Difference]: Without dead ends: 339 [2018-10-10 15:27:40,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5473 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=2737, Invalid=19315, Unknown=0, NotChecked=0, Total=22052 [2018-10-10 15:27:40,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-10 15:27:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 279. [2018-10-10 15:27:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-10 15:27:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-10-10 15:27:40,625 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 192 [2018-10-10 15:27:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:40,626 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-10-10 15:27:40,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-10 15:27:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-10-10 15:27:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-10 15:27:40,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:40,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:40,629 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:40,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1606196536, now seen corresponding path program 3 times [2018-10-10 15:27:40,631 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:41,551 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:27:46,474 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2018-10-10 15:27:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:51,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:51,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-10-10 15:27:51,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-10 15:27:51,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-10 15:27:51,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=8368, Unknown=0, NotChecked=0, Total=8742 [2018-10-10 15:27:51,465 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 94 states. [2018-10-10 15:27:55,054 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2018-10-10 15:27:55,425 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2018-10-10 15:27:55,842 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2018-10-10 15:27:56,475 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2018-10-10 15:27:56,879 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2018-10-10 15:27:57,556 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 94 [2018-10-10 15:27:58,155 WARN L178 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 114 [2018-10-10 15:27:58,755 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 113 [2018-10-10 15:27:59,465 WARN L178 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 120 [2018-10-10 15:28:00,052 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 127 [2018-10-10 15:28:00,354 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2018-10-10 15:28:00,558 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-10 15:28:00,865 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-10 15:28:01,176 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-10 15:28:01,501 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-10 15:28:02,416 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2018-10-10 15:28:02,623 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2018-10-10 15:28:02,875 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2018-10-10 15:28:03,962 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-10 15:28:04,293 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2018-10-10 15:28:04,664 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2018-10-10 15:28:05,217 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2018-10-10 15:28:05,697 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 93 [2018-10-10 15:28:06,438 WARN L178 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 106 [2018-10-10 15:28:07,073 WARN L178 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 126 [2018-10-10 15:28:07,804 WARN L178 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 125 [2018-10-10 15:28:08,599 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 132 [2018-10-10 15:28:09,382 WARN L178 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 139 [2018-10-10 15:28:09,781 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2018-10-10 15:28:10,035 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-10 15:28:10,490 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2018-10-10 15:28:10,826 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-10-10 15:28:11,329 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-10 15:28:12,432 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2018-10-10 15:28:12,732 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-10 15:28:13,225 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-10-10 15:28:13,741 WARN L178 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2018-10-10 15:28:14,237 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2018-10-10 15:28:14,864 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2018-10-10 15:28:15,600 WARN L178 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 121 [2018-10-10 15:28:16,325 WARN L178 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 119 [2018-10-10 15:28:17,149 WARN L178 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 127 [2018-10-10 15:28:17,967 WARN L178 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 134 [2018-10-10 15:28:18,349 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-10-10 15:28:18,613 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-10-10 15:28:19,032 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-10 15:28:19,312 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:28:19,640 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2018-10-10 15:28:20,068 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-10-10 15:28:20,307 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-10 15:28:20,519 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-10 15:28:21,284 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-10 15:28:21,536 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-10 15:28:21,868 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-10 15:28:22,199 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2018-10-10 15:28:22,611 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2018-10-10 15:28:23,012 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2018-10-10 15:28:23,480 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2018-10-10 15:28:23,919 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2018-10-10 15:28:24,321 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2018-10-10 15:28:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:28,050 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2018-10-10 15:28:28,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-10 15:28:28,050 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 235 [2018-10-10 15:28:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:28,054 INFO L225 Difference]: With dead ends: 413 [2018-10-10 15:28:28,054 INFO L226 Difference]: Without dead ends: 382 [2018-10-10 15:28:28,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8850 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=4346, Invalid=34660, Unknown=0, NotChecked=0, Total=39006 [2018-10-10 15:28:28,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-10 15:28:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 322. [2018-10-10 15:28:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-10 15:28:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 323 transitions. [2018-10-10 15:28:28,066 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 323 transitions. Word has length 235 [2018-10-10 15:28:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:28,067 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 323 transitions. [2018-10-10 15:28:28,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-10 15:28:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 323 transitions. [2018-10-10 15:28:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-10 15:28:28,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:28,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:28:28,071 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:28,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:28,071 INFO L82 PathProgramCache]: Analyzing trace with hash 278219812, now seen corresponding path program 4 times [2018-10-10 15:28:28,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-10 15:28:31,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:31,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-10 15:28:31,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-10 15:28:31,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-10 15:28:31,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=4709, Unknown=0, NotChecked=0, Total=4970 [2018-10-10 15:28:31,860 INFO L87 Difference]: Start difference. First operand 322 states and 323 transitions. Second operand 71 states. [2018-10-10 15:28:34,433 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 41 [2018-10-10 15:28:34,737 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-10 15:28:35,127 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2018-10-10 15:28:35,426 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 71 [2018-10-10 15:28:35,842 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2018-10-10 15:28:36,207 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2018-10-10 15:28:36,520 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2018-10-10 15:28:36,780 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-10 15:28:37,099 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-10-10 15:28:37,425 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2018-10-10 15:28:37,761 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2018-10-10 15:28:39,838 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-10 15:28:40,287 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-10-10 15:28:40,581 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2018-10-10 15:28:41,034 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2018-10-10 15:28:41,383 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2018-10-10 15:28:41,799 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-10-10 15:28:42,028 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-10 15:28:42,379 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-10 15:28:43,043 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2018-10-10 15:28:43,423 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2018-10-10 15:28:43,789 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2018-10-10 15:28:44,185 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2018-10-10 15:28:44,639 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2018-10-10 15:28:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:46,889 INFO L93 Difference]: Finished difference Result 308 states and 309 transitions. [2018-10-10 15:28:46,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-10 15:28:46,890 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-10-10 15:28:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:46,891 INFO L225 Difference]: With dead ends: 308 [2018-10-10 15:28:46,891 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:28:46,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4486 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=2397, Invalid=17343, Unknown=0, NotChecked=0, Total=19740 [2018-10-10 15:28:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:28:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:28:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:28:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:28:46,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 278 [2018-10-10 15:28:46,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:46,895 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:28:46,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-10 15:28:46,895 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:28:46,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:28:46,900 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:28:46 BoogieIcfgContainer [2018-10-10 15:28:46,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:28:46,901 INFO L168 Benchmark]: Toolchain (without parser) took 120761.63 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 599.3 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -234.0 MB). Peak memory consumption was 365.2 MB. Max. memory is 7.1 GB. [2018-10-10 15:28:46,902 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 15:28:46,903 INFO L168 Benchmark]: Boogie Preprocessor took 68.19 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 15:28:46,903 INFO L168 Benchmark]: RCFGBuilder took 882.44 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-10 15:28:46,904 INFO L168 Benchmark]: TraceAbstraction took 119806.51 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 599.3 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -276.3 MB). Peak memory consumption was 322.9 MB. Max. memory is 7.1 GB. [2018-10-10 15:28:46,906 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 68.19 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 882.44 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 119806.51 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 599.3 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -276.3 MB). Peak memory consumption was 322.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 242]: 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, 139 locations, 1 error locations. SAFE Result, 119.7s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 91.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 960 SDtfs, 12802 SDslu, 13581 SDs, 0 SdLazy, 23458 SolverSat, 1068 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 744 GetRequests, 48 SyntacticMatches, 20 SemanticMatches, 676 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21260 ImplicationChecksByTransitivity, 88.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 434 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 26.7s InterpolantComputationTime, 1459 NumberOfCodeBlocks, 1459 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1450 ConstructedInterpolants, 0 QuantifiedInterpolants, 4764531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 140/869 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_43.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-28-46-916.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-28-46-916.csv Received shutdown request...