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/20170304-DifficultPathPrograms/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:08:06,742 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:08:06,744 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:08:06,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 15:08:06,790 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 15:08:06,800 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:08:06,800 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:08:06,801 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:08:06,802 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:08:06,802 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:08:06,802 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:08:06,803 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:08:06,803 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:08:06,803 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:08:06,804 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:08:06,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:08:06,804 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:08:06,804 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:08:06,805 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:08:06,805 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:08:06,861 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:08:06,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:08:06,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:08:06,880 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:08:06,880 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:08:06,881 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl [2018-10-15 15:08:06,881 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl' [2018-10-15 15:08:06,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:08:06,960 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:08:06,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:08:06,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:08:06,961 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:08:06,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (1/1) ... [2018-10-15 15:08:07,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (1/1) ... [2018-10-15 15:08:07,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (1/1) ... [2018-10-15 15:08:07,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (1/1) ... [2018-10-15 15:08:07,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (1/1) ... [2018-10-15 15:08:07,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (1/1) ... [2018-10-15 15:08:07,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (1/1) ... [2018-10-15 15:08:07,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:08:07,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:08:07,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:08:07,055 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:08:07,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (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 15:08:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:08:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:08:08,163 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:08:08,164 INFO L202 PluginConnector]: Adding new model pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:08 BoogieIcfgContainer [2018-10-15 15:08:08,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:08:08,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:08:08,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:08:08,169 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:08:08,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:06" (1/2) ... [2018-10-15 15:08:08,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717e8148 and model type pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:08, skipping insertion in model container [2018-10-15 15:08:08,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:08" (2/2) ... [2018-10-15 15:08:08,173 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl [2018-10-15 15:08:08,183 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:08:08,192 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:08:08,210 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:08:08,239 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:08:08,240 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:08:08,240 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:08:08,240 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:08:08,241 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:08:08,241 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:08:08,241 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:08:08,241 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:08:08,241 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:08:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2018-10-15 15:08:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-15 15:08:08,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:08,289 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:08,292 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:08,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1175871510, now seen corresponding path program 1 times [2018-10-15 15:08:08,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:08,768 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 15:08:08,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:08,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:08,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:08,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:08,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:08,802 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2018-10-15 15:08:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:08,955 INFO L93 Difference]: Finished difference Result 282 states and 293 transitions. [2018-10-15 15:08:08,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:08,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2018-10-15 15:08:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:08,984 INFO L225 Difference]: With dead ends: 282 [2018-10-15 15:08:08,985 INFO L226 Difference]: Without dead ends: 282 [2018-10-15 15:08:08,988 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 15:08:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-10-15 15:08:09,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 279. [2018-10-15 15:08:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-15 15:08:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 291 transitions. [2018-10-15 15:08:09,060 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 291 transitions. Word has length 180 [2018-10-15 15:08:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:09,062 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 291 transitions. [2018-10-15 15:08:09,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:09,062 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 291 transitions. [2018-10-15 15:08:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-15 15:08:09,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:09,072 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:09,072 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:09,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1884441060, now seen corresponding path program 1 times [2018-10-15 15:08:09,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:09,316 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 15:08:09,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:09,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:09,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:09,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:09,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:09,321 INFO L87 Difference]: Start difference. First operand 279 states and 291 transitions. Second operand 3 states. [2018-10-15 15:08:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:09,364 INFO L93 Difference]: Finished difference Result 421 states and 443 transitions. [2018-10-15 15:08:09,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:09,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2018-10-15 15:08:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:09,370 INFO L225 Difference]: With dead ends: 421 [2018-10-15 15:08:09,370 INFO L226 Difference]: Without dead ends: 421 [2018-10-15 15:08:09,371 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 15:08:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-10-15 15:08:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 418. [2018-10-15 15:08:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2018-10-15 15:08:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 441 transitions. [2018-10-15 15:08:09,399 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 441 transitions. Word has length 181 [2018-10-15 15:08:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:09,400 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 441 transitions. [2018-10-15 15:08:09,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 441 transitions. [2018-10-15 15:08:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-15 15:08:09,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:09,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:09,405 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:09,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:09,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1216567803, now seen corresponding path program 1 times [2018-10-15 15:08:09,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:09,631 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 15:08:09,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:09,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:09,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:09,634 INFO L87 Difference]: Start difference. First operand 418 states and 441 transitions. Second operand 3 states. [2018-10-15 15:08:09,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:09,676 INFO L93 Difference]: Finished difference Result 681 states and 723 transitions. [2018-10-15 15:08:09,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:09,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-15 15:08:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:09,683 INFO L225 Difference]: With dead ends: 681 [2018-10-15 15:08:09,683 INFO L226 Difference]: Without dead ends: 681 [2018-10-15 15:08:09,684 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 15:08:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2018-10-15 15:08:09,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 678. [2018-10-15 15:08:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2018-10-15 15:08:09,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 721 transitions. [2018-10-15 15:08:09,720 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 721 transitions. Word has length 182 [2018-10-15 15:08:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:09,723 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 721 transitions. [2018-10-15 15:08:09,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 721 transitions. [2018-10-15 15:08:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-15 15:08:09,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:09,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:09,731 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:09,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:09,732 INFO L82 PathProgramCache]: Analyzing trace with hash 739139617, now seen corresponding path program 1 times [2018-10-15 15:08:09,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:09,963 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 15:08:09,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:09,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:09,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:09,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:09,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:09,965 INFO L87 Difference]: Start difference. First operand 678 states and 721 transitions. Second operand 3 states. [2018-10-15 15:08:10,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:10,006 INFO L93 Difference]: Finished difference Result 1189 states and 1259 transitions. [2018-10-15 15:08:10,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:10,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-10-15 15:08:10,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:10,016 INFO L225 Difference]: With dead ends: 1189 [2018-10-15 15:08:10,016 INFO L226 Difference]: Without dead ends: 1189 [2018-10-15 15:08:10,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 15:08:10,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2018-10-15 15:08:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1170. [2018-10-15 15:08:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1170 states. [2018-10-15 15:08:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1241 transitions. [2018-10-15 15:08:10,056 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1241 transitions. Word has length 183 [2018-10-15 15:08:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:10,058 INFO L481 AbstractCegarLoop]: Abstraction has 1170 states and 1241 transitions. [2018-10-15 15:08:10,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:10,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1241 transitions. [2018-10-15 15:08:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-15 15:08:10,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:10,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:10,068 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:10,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:10,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1325400255, now seen corresponding path program 1 times [2018-10-15 15:08:10,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:10,222 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 15:08:10,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:10,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:10,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:10,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:10,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:10,225 INFO L87 Difference]: Start difference. First operand 1170 states and 1241 transitions. Second operand 3 states. [2018-10-15 15:08:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:10,326 INFO L93 Difference]: Finished difference Result 1647 states and 1753 transitions. [2018-10-15 15:08:10,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:10,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2018-10-15 15:08:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:10,334 INFO L225 Difference]: With dead ends: 1647 [2018-10-15 15:08:10,335 INFO L226 Difference]: Without dead ends: 1647 [2018-10-15 15:08:10,335 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 15:08:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2018-10-15 15:08:10,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1644. [2018-10-15 15:08:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2018-10-15 15:08:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 1751 transitions. [2018-10-15 15:08:10,373 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 1751 transitions. Word has length 184 [2018-10-15 15:08:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:10,374 INFO L481 AbstractCegarLoop]: Abstraction has 1644 states and 1751 transitions. [2018-10-15 15:08:10,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 1751 transitions. [2018-10-15 15:08:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-15 15:08:10,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:10,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:10,378 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:10,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:10,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1454265499, now seen corresponding path program 1 times [2018-10-15 15:08:10,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:10,762 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 15:08:10,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:10,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:08:10,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:08:10,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:08:10,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:08:10,764 INFO L87 Difference]: Start difference. First operand 1644 states and 1751 transitions. Second operand 8 states. [2018-10-15 15:08:11,131 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-15 15:08:11,355 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:08:11,616 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:08:12,140 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-15 15:08:12,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:12,554 INFO L93 Difference]: Finished difference Result 2947 states and 3110 transitions. [2018-10-15 15:08:12,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:08:12,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2018-10-15 15:08:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:12,568 INFO L225 Difference]: With dead ends: 2947 [2018-10-15 15:08:12,568 INFO L226 Difference]: Without dead ends: 2947 [2018-10-15 15:08:12,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:08:12,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2018-10-15 15:08:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1788. [2018-10-15 15:08:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2018-10-15 15:08:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 1887 transitions. [2018-10-15 15:08:12,642 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 1887 transitions. Word has length 184 [2018-10-15 15:08:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:12,642 INFO L481 AbstractCegarLoop]: Abstraction has 1788 states and 1887 transitions. [2018-10-15 15:08:12,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:08:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 1887 transitions. [2018-10-15 15:08:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-15 15:08:12,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:12,647 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:12,649 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:12,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:12,650 INFO L82 PathProgramCache]: Analyzing trace with hash -513379523, now seen corresponding path program 1 times [2018-10-15 15:08:12,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:13,089 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-15 15:08:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:13,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:08:13,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:08:13,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:08:13,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:08:13,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:08:13,448 INFO L87 Difference]: Start difference. First operand 1788 states and 1887 transitions. Second operand 10 states. [2018-10-15 15:08:14,967 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-10-15 15:08:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:15,271 INFO L93 Difference]: Finished difference Result 1637 states and 1713 transitions. [2018-10-15 15:08:15,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 15:08:15,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 245 [2018-10-15 15:08:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:15,286 INFO L225 Difference]: With dead ends: 1637 [2018-10-15 15:08:15,287 INFO L226 Difference]: Without dead ends: 1601 [2018-10-15 15:08:15,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:08:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2018-10-15 15:08:15,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1051. [2018-10-15 15:08:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2018-10-15 15:08:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1100 transitions. [2018-10-15 15:08:15,310 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1100 transitions. Word has length 245 [2018-10-15 15:08:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:15,311 INFO L481 AbstractCegarLoop]: Abstraction has 1051 states and 1100 transitions. [2018-10-15 15:08:15,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:08:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1100 transitions. [2018-10-15 15:08:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-15 15:08:15,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:15,316 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:15,316 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:15,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:15,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1269517958, now seen corresponding path program 1 times [2018-10-15 15:08:15,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:15,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:15,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:15,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:15,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:15,525 INFO L87 Difference]: Start difference. First operand 1051 states and 1100 transitions. Second operand 3 states. [2018-10-15 15:08:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:15,578 INFO L93 Difference]: Finished difference Result 241 states and 240 transitions. [2018-10-15 15:08:15,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:15,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-10-15 15:08:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:15,580 INFO L225 Difference]: With dead ends: 241 [2018-10-15 15:08:15,580 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:08:15,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:08:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:08:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:08:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:08:15,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 246 [2018-10-15 15:08:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:15,581 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:08:15,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:08:15,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:08:15,587 INFO L202 PluginConnector]: Adding new model pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:08:15 BoogieIcfgContainer [2018-10-15 15:08:15,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:08:15,589 INFO L168 Benchmark]: Toolchain (without parser) took 8629.57 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.8 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 395.4 MB). Peak memory consumption was 435.3 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:15,590 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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 15:08:15,591 INFO L168 Benchmark]: Boogie Preprocessor took 92.82 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 15:08:15,591 INFO L168 Benchmark]: RCFGBuilder took 1110.08 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 15:08:15,592 INFO L168 Benchmark]: TraceAbstraction took 7422.18 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.8 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 353.1 MB). Peak memory consumption was 393.0 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:15,596 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 0.23 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 92.82 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 1110.08 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. * TraceAbstraction took 7422.18 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.8 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 353.1 MB). Peak memory consumption was 393.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 371]: 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, 207 locations, 1 error locations. SAFE Result, 7.3s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2009 SDtfs, 1576 SDslu, 3227 SDs, 0 SdLazy, 409 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1788occurred in iteration=6, 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: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1740 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1585 NumberOfCodeBlocks, 1585 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1577 ConstructedInterpolants, 0 QuantifiedInterpolants, 1377879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 73/87 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/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-08-15-615.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-08-15-615.csv Received shutdown request...