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/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_2_alt.BV.c.cil.c_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:34:47,036 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:34:47,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:34:47,052 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 15:34:47,105 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 15:34:47,118 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:34:47,118 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:34:47,119 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:34:47,120 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:34:47,120 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:34:47,120 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:34:47,121 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:34:47,121 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:34:47,121 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:34:47,121 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:34:47,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:34:47,122 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:34:47,122 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:34:47,123 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:34:47,123 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:34:47,186 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:34:47,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:34:47,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:34:47,208 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:34:47,208 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:34:47,209 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_2_alt.BV.c.cil.c_13.bpl [2018-10-15 15:34:47,209 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_2_alt.BV.c.cil.c_13.bpl' [2018-10-15 15:34:47,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:34:47,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 15:34:47,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:34:47,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:34:47,297 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:34:47,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (1/1) ... [2018-10-15 15:34:47,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (1/1) ... [2018-10-15 15:34:47,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (1/1) ... [2018-10-15 15:34:47,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (1/1) ... [2018-10-15 15:34:47,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (1/1) ... [2018-10-15 15:34:47,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (1/1) ... [2018-10-15 15:34:47,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (1/1) ... [2018-10-15 15:34:47,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:34:47,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:34:47,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:34:47,378 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:34:47,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (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 [2018-10-15 15:34:47,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:34:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:34:48,395 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:34:48,396 INFO L202 PluginConnector]: Adding new model s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:48 BoogieIcfgContainer [2018-10-15 15:34:48,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:34:48,396 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 15:34:48,396 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 15:34:48,397 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 15:34:48,400 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:48" (1/1) ... [2018-10-15 15:34:48,404 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 15:34:48,426 INFO L202 PluginConnector]: Adding new model s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:34:48 BasicIcfg [2018-10-15 15:34:48,426 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 15:34:48,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:34:48,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:34:48,430 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:34:48,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:47" (1/3) ... [2018-10-15 15:34:48,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618e172c and model type s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:48, skipping insertion in model container [2018-10-15 15:34:48,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:48" (2/3) ... [2018-10-15 15:34:48,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618e172c and model type s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:34:48, skipping insertion in model container [2018-10-15 15:34:48,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:34:48" (3/3) ... [2018-10-15 15:34:48,434 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_2_alt.BV.c.cil.c_13.bplleft_unchanged_by_heapseparator [2018-10-15 15:34:48,443 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:34:48,453 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:34:48,469 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:34:48,497 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:34:48,497 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:34:48,498 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:34:48,498 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:34:48,498 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:34:48,498 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:34:48,498 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:34:48,499 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:34:48,499 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:34:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states. [2018-10-15 15:34:48,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-15 15:34:48,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:48,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:48,545 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:48,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1609256981, now seen corresponding path program 1 times [2018-10-15 15:34:48,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:48,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:48,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:48,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:48,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:48,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:48,974 INFO L87 Difference]: Start difference. First operand 217 states. Second operand 3 states. [2018-10-15 15:34:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:49,136 INFO L93 Difference]: Finished difference Result 284 states and 293 transitions. [2018-10-15 15:34:49,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:49,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2018-10-15 15:34:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:49,157 INFO L225 Difference]: With dead ends: 284 [2018-10-15 15:34:49,158 INFO L226 Difference]: Without dead ends: 279 [2018-10-15 15:34:49,160 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 [2018-10-15 15:34:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-15 15:34:49,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 274. [2018-10-15 15:34:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-15 15:34:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 283 transitions. [2018-10-15 15:34:49,225 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 283 transitions. Word has length 173 [2018-10-15 15:34:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:49,226 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 283 transitions. [2018-10-15 15:34:49,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 283 transitions. [2018-10-15 15:34:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-15 15:34:49,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:49,240 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:49,242 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:49,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:49,243 INFO L82 PathProgramCache]: Analyzing trace with hash -909939228, now seen corresponding path program 1 times [2018-10-15 15:34:49,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:49,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:49,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:49,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:49,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:49,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:49,425 INFO L87 Difference]: Start difference. First operand 274 states and 283 transitions. Second operand 3 states. [2018-10-15 15:34:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:49,581 INFO L93 Difference]: Finished difference Result 343 states and 356 transitions. [2018-10-15 15:34:49,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:49,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2018-10-15 15:34:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:49,588 INFO L225 Difference]: With dead ends: 343 [2018-10-15 15:34:49,589 INFO L226 Difference]: Without dead ends: 342 [2018-10-15 15:34:49,590 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 [2018-10-15 15:34:49,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-15 15:34:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 337. [2018-10-15 15:34:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-10-15 15:34:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 350 transitions. [2018-10-15 15:34:49,612 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 350 transitions. Word has length 197 [2018-10-15 15:34:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:49,613 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 350 transitions. [2018-10-15 15:34:49,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 350 transitions. [2018-10-15 15:34:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-15 15:34:49,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:49,619 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:49,620 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:49,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:49,620 INFO L82 PathProgramCache]: Analyzing trace with hash 659900481, now seen corresponding path program 1 times [2018-10-15 15:34:49,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-15 15:34:49,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:49,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:49,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:49,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:49,822 INFO L87 Difference]: Start difference. First operand 337 states and 350 transitions. Second operand 3 states. [2018-10-15 15:34:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:50,079 INFO L93 Difference]: Finished difference Result 373 states and 386 transitions. [2018-10-15 15:34:50,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:50,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-10-15 15:34:50,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:50,083 INFO L225 Difference]: With dead ends: 373 [2018-10-15 15:34:50,083 INFO L226 Difference]: Without dead ends: 373 [2018-10-15 15:34:50,084 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 [2018-10-15 15:34:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-10-15 15:34:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-10-15 15:34:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-10-15 15:34:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 386 transitions. [2018-10-15 15:34:50,103 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 386 transitions. Word has length 223 [2018-10-15 15:34:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:50,104 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 386 transitions. [2018-10-15 15:34:50,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 386 transitions. [2018-10-15 15:34:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-15 15:34:50,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:50,109 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:50,110 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:50,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:50,110 INFO L82 PathProgramCache]: Analyzing trace with hash 161138064, now seen corresponding path program 1 times [2018-10-15 15:34:50,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-15 15:34:50,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:50,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:50,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:50,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:50,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:50,344 INFO L87 Difference]: Start difference. First operand 373 states and 386 transitions. Second operand 3 states. [2018-10-15 15:34:50,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:50,478 INFO L93 Difference]: Finished difference Result 419 states and 432 transitions. [2018-10-15 15:34:50,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:50,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2018-10-15 15:34:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:50,480 INFO L225 Difference]: With dead ends: 419 [2018-10-15 15:34:50,481 INFO L226 Difference]: Without dead ends: 419 [2018-10-15 15:34:50,481 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 [2018-10-15 15:34:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-10-15 15:34:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-10-15 15:34:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-10-15 15:34:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 432 transitions. [2018-10-15 15:34:50,517 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 432 transitions. Word has length 269 [2018-10-15 15:34:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:50,518 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 432 transitions. [2018-10-15 15:34:50,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 432 transitions. [2018-10-15 15:34:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-15 15:34:50,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:50,524 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:50,525 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:50,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash 881712010, now seen corresponding path program 1 times [2018-10-15 15:34:50,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-15 15:34:50,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:50,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:50,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:50,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:50,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:50,771 INFO L87 Difference]: Start difference. First operand 419 states and 432 transitions. Second operand 3 states. [2018-10-15 15:34:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:50,834 INFO L93 Difference]: Finished difference Result 488 states and 507 transitions. [2018-10-15 15:34:50,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:50,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 270 [2018-10-15 15:34:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:50,838 INFO L225 Difference]: With dead ends: 488 [2018-10-15 15:34:50,839 INFO L226 Difference]: Without dead ends: 488 [2018-10-15 15:34:50,839 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 [2018-10-15 15:34:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2018-10-15 15:34:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 478. [2018-10-15 15:34:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2018-10-15 15:34:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 496 transitions. [2018-10-15 15:34:50,851 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 496 transitions. Word has length 270 [2018-10-15 15:34:50,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:50,852 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 496 transitions. [2018-10-15 15:34:50,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 496 transitions. [2018-10-15 15:34:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-15 15:34:50,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:50,880 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:50,880 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:50,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:50,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1428057500, now seen corresponding path program 1 times [2018-10-15 15:34:50,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-15 15:34:51,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:51,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:51,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:51,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:51,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:51,024 INFO L87 Difference]: Start difference. First operand 478 states and 496 transitions. Second operand 3 states. [2018-10-15 15:34:51,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:51,681 INFO L93 Difference]: Finished difference Result 630 states and 648 transitions. [2018-10-15 15:34:51,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:51,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2018-10-15 15:34:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:51,685 INFO L225 Difference]: With dead ends: 630 [2018-10-15 15:34:51,685 INFO L226 Difference]: Without dead ends: 630 [2018-10-15 15:34:51,685 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 [2018-10-15 15:34:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2018-10-15 15:34:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 622. [2018-10-15 15:34:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2018-10-15 15:34:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 640 transitions. [2018-10-15 15:34:51,697 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 640 transitions. Word has length 343 [2018-10-15 15:34:51,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:51,697 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 640 transitions. [2018-10-15 15:34:51,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 640 transitions. [2018-10-15 15:34:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-15 15:34:51,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:51,703 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:51,703 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:51,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash -456721946, now seen corresponding path program 1 times [2018-10-15 15:34:51,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-10-15 15:34:51,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:51,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:51,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:51,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:51,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:51,905 INFO L87 Difference]: Start difference. First operand 622 states and 640 transitions. Second operand 3 states. [2018-10-15 15:34:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:52,129 INFO L93 Difference]: Finished difference Result 774 states and 792 transitions. [2018-10-15 15:34:52,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:52,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 390 [2018-10-15 15:34:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:52,135 INFO L225 Difference]: With dead ends: 774 [2018-10-15 15:34:52,135 INFO L226 Difference]: Without dead ends: 730 [2018-10-15 15:34:52,135 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 [2018-10-15 15:34:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2018-10-15 15:34:52,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 730. [2018-10-15 15:34:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2018-10-15 15:34:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 748 transitions. [2018-10-15 15:34:52,149 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 748 transitions. Word has length 390 [2018-10-15 15:34:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:52,150 INFO L481 AbstractCegarLoop]: Abstraction has 730 states and 748 transitions. [2018-10-15 15:34:52,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 748 transitions. [2018-10-15 15:34:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-15 15:34:52,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:52,153 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:52,153 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:52,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:52,154 INFO L82 PathProgramCache]: Analyzing trace with hash 590266127, now seen corresponding path program 1 times [2018-10-15 15:34:52,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 460 proven. 17 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-10-15 15:34:52,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:34:52,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-15 15:34:52,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-15 15:34:52,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-15 15:34:52,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:34:52,469 INFO L87 Difference]: Start difference. First operand 730 states and 748 transitions. Second operand 4 states. [2018-10-15 15:34:53,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:53,728 INFO L93 Difference]: Finished difference Result 802 states and 813 transitions. [2018-10-15 15:34:53,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-15 15:34:53,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 419 [2018-10-15 15:34:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:53,730 INFO L225 Difference]: With dead ends: 802 [2018-10-15 15:34:53,730 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:34:53,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-15 15:34:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:34:53,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:34:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:34:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:34:53,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 419 [2018-10-15 15:34:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:53,732 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:34:53,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-15 15:34:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:34:53,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:34:53,738 INFO L202 PluginConnector]: Adding new model s3_srvr_2_alt.BV.c.cil.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:34:53 BasicIcfg [2018-10-15 15:34:53,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:34:53,739 INFO L168 Benchmark]: Toolchain (without parser) took 6444.26 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 186.1 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -216.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:53,741 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:53,742 INFO L168 Benchmark]: Boogie Preprocessor took 80.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:53,743 INFO L168 Benchmark]: RCFGBuilder took 1017.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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. [2018-10-15 15:34:53,744 INFO L168 Benchmark]: IcfgTransformer took 29.74 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. [2018-10-15 15:34:53,744 INFO L168 Benchmark]: TraceAbstraction took 5311.35 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 186.1 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -258.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:53,749 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 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1017.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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. * IcfgTransformer took 29.74 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. * TraceAbstraction took 5311.35 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 186.1 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -258.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 382]: 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, 217 locations, 1 error locations. SAFE Result, 5.2s OverallTime, 8 OverallIterations, 8 TraceHistogramMax, 2.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1856 SDtfs, 261 SDslu, 1651 SDs, 0 SdLazy, 468 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=730occurred in iteration=7, 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, 8 MinimizatonAttempts, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 2284 NumberOfCodeBlocks, 2284 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2276 ConstructedInterpolants, 0 QuantifiedInterpolants, 874422 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 1637/1654 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/s3_srvr_2_alt.BV.c.cil.c_13.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_15-34-53-761.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_2_alt.BV.c.cil.c_13.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-34-53-761.csv Received shutdown request...