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-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:07:05,640 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:07:05,642 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:07:05,655 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 15:07:05,709 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 15:07:05,729 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:07:05,729 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:07:05,730 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:07:05,731 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:07:05,731 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:07:05,731 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:07:05,732 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:07:05,732 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:07:05,732 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:07:05,732 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:07:05,733 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:07:05,737 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:07:05,737 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:07:05,738 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:07:05,738 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:07:05,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:07:05,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:07:05,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:07:05,845 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:07:05,845 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:07:05,846 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl [2018-10-15 15:07:05,846 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl' [2018-10-15 15:07:05,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:07:05,931 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:07:05,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:07:05,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:07:05,932 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:07:05,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (1/1) ... [2018-10-15 15:07:05,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (1/1) ... [2018-10-15 15:07:05,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (1/1) ... [2018-10-15 15:07:05,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (1/1) ... [2018-10-15 15:07:05,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (1/1) ... [2018-10-15 15:07:05,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (1/1) ... [2018-10-15 15:07:06,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (1/1) ... [2018-10-15 15:07:06,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:07:06,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:07:06,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:07:06,016 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:07:06,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (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 15:07:06,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:07:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:07:06,945 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:07:06,946 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:06 BoogieIcfgContainer [2018-10-15 15:07:06,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:07:06,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:07:06,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:07:06,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:07:06,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:05" (1/2) ... [2018-10-15 15:07:06,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdd7244 and model type pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:06, skipping insertion in model container [2018-10-15 15:07:06,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:06" (2/2) ... [2018-10-15 15:07:06,954 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl [2018-10-15 15:07:06,964 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:07:06,973 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:07:06,993 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:07:07,025 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:07:07,025 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:07:07,026 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:07:07,026 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:07:07,026 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:07:07,026 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:07:07,026 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:07:07,027 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:07:07,027 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:07:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2018-10-15 15:07:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-15 15:07:07,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:07,100 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] [2018-10-15 15:07:07,104 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:07,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1635332536, now seen corresponding path program 1 times [2018-10-15 15:07:07,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:07,495 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 15:07:07,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:07,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:07,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:07,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:07,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:07,523 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2018-10-15 15:07:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:07,635 INFO L93 Difference]: Finished difference Result 225 states and 232 transitions. [2018-10-15 15:07:07,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:07,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2018-10-15 15:07:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:07,654 INFO L225 Difference]: With dead ends: 225 [2018-10-15 15:07:07,654 INFO L226 Difference]: Without dead ends: 225 [2018-10-15 15:07:07,657 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 15:07:07,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-15 15:07:07,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2018-10-15 15:07:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-15 15:07:07,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 230 transitions. [2018-10-15 15:07:07,713 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 230 transitions. Word has length 150 [2018-10-15 15:07:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:07,714 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 230 transitions. [2018-10-15 15:07:07,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 230 transitions. [2018-10-15 15:07:07,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-15 15:07:07,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:07,718 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] [2018-10-15 15:07:07,719 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:07,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:07,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1307591311, now seen corresponding path program 1 times [2018-10-15 15:07:07,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:08,004 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 15:07:08,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:08,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:07:08,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:07:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:07:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:07:08,009 INFO L87 Difference]: Start difference. First operand 222 states and 230 transitions. Second operand 8 states. [2018-10-15 15:07:08,532 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:07:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:08,817 INFO L93 Difference]: Finished difference Result 366 states and 381 transitions. [2018-10-15 15:07:08,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:07:08,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2018-10-15 15:07:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:08,826 INFO L225 Difference]: With dead ends: 366 [2018-10-15 15:07:08,826 INFO L226 Difference]: Without dead ends: 366 [2018-10-15 15:07:08,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:07:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-10-15 15:07:08,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 240. [2018-10-15 15:07:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-15 15:07:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 248 transitions. [2018-10-15 15:07:08,851 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 248 transitions. Word has length 152 [2018-10-15 15:07:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:08,852 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 248 transitions. [2018-10-15 15:07:08,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:07:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 248 transitions. [2018-10-15 15:07:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-15 15:07:08,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:08,859 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] [2018-10-15 15:07:08,860 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:08,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:08,861 INFO L82 PathProgramCache]: Analyzing trace with hash 366507231, now seen corresponding path program 1 times [2018-10-15 15:07:08,862 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:09,068 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 15:07:09,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:09,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:09,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:09,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:09,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:09,070 INFO L87 Difference]: Start difference. First operand 240 states and 248 transitions. Second operand 3 states. [2018-10-15 15:07:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:09,134 INFO L93 Difference]: Finished difference Result 344 states and 357 transitions. [2018-10-15 15:07:09,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:09,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2018-10-15 15:07:09,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:09,138 INFO L225 Difference]: With dead ends: 344 [2018-10-15 15:07:09,138 INFO L226 Difference]: Without dead ends: 344 [2018-10-15 15:07:09,139 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 15:07:09,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-10-15 15:07:09,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 340. [2018-10-15 15:07:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-15 15:07:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 353 transitions. [2018-10-15 15:07:09,162 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 353 transitions. Word has length 153 [2018-10-15 15:07:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:09,163 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 353 transitions. [2018-10-15 15:07:09,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 353 transitions. [2018-10-15 15:07:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-15 15:07:09,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:09,167 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] [2018-10-15 15:07:09,168 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:09,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:09,168 INFO L82 PathProgramCache]: Analyzing trace with hash 666484377, now seen corresponding path program 1 times [2018-10-15 15:07:09,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:09,337 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 15:07:09,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:09,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:09,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:09,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:09,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:09,339 INFO L87 Difference]: Start difference. First operand 340 states and 353 transitions. Second operand 3 states. [2018-10-15 15:07:09,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:09,440 INFO L93 Difference]: Finished difference Result 465 states and 484 transitions. [2018-10-15 15:07:09,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:09,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-10-15 15:07:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:09,444 INFO L225 Difference]: With dead ends: 465 [2018-10-15 15:07:09,444 INFO L226 Difference]: Without dead ends: 465 [2018-10-15 15:07:09,445 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 15:07:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2018-10-15 15:07:09,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 462. [2018-10-15 15:07:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2018-10-15 15:07:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 482 transitions. [2018-10-15 15:07:09,489 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 482 transitions. Word has length 156 [2018-10-15 15:07:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:09,490 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 482 transitions. [2018-10-15 15:07:09,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 482 transitions. [2018-10-15 15:07:09,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-15 15:07:09,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:09,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:09,502 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:09,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:09,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1230072476, now seen corresponding path program 1 times [2018-10-15 15:07:09,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:07:09,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:09,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:09,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:09,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:09,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:09,715 INFO L87 Difference]: Start difference. First operand 462 states and 482 transitions. Second operand 3 states. [2018-10-15 15:07:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:09,797 INFO L93 Difference]: Finished difference Result 797 states and 831 transitions. [2018-10-15 15:07:09,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:09,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-10-15 15:07:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:09,805 INFO L225 Difference]: With dead ends: 797 [2018-10-15 15:07:09,806 INFO L226 Difference]: Without dead ends: 797 [2018-10-15 15:07:09,806 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 15:07:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2018-10-15 15:07:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 770. [2018-10-15 15:07:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2018-10-15 15:07:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 805 transitions. [2018-10-15 15:07:09,827 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 805 transitions. Word has length 201 [2018-10-15 15:07:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:09,828 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 805 transitions. [2018-10-15 15:07:09,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 805 transitions. [2018-10-15 15:07:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-15 15:07:09,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:09,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:09,832 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:09,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:09,833 INFO L82 PathProgramCache]: Analyzing trace with hash 722311874, now seen corresponding path program 1 times [2018-10-15 15:07:09,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:07:10,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:07:10,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:07:10,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:07:10,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:07:10,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:07:10,546 INFO L87 Difference]: Start difference. First operand 770 states and 805 transitions. Second operand 10 states. [2018-10-15 15:07:11,565 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-10-15 15:07:11,964 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-10-15 15:07:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:12,204 INFO L93 Difference]: Finished difference Result 705 states and 728 transitions. [2018-10-15 15:07:12,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 15:07:12,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 202 [2018-10-15 15:07:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:12,211 INFO L225 Difference]: With dead ends: 705 [2018-10-15 15:07:12,211 INFO L226 Difference]: Without dead ends: 531 [2018-10-15 15:07:12,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:07:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-15 15:07:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 476. [2018-10-15 15:07:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2018-10-15 15:07:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 489 transitions. [2018-10-15 15:07:12,222 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 489 transitions. Word has length 202 [2018-10-15 15:07:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:12,223 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 489 transitions. [2018-10-15 15:07:12,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:07:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 489 transitions. [2018-10-15 15:07:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-15 15:07:12,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:12,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:12,226 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:12,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash 676862764, now seen corresponding path program 2 times [2018-10-15 15:07:12,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-15 15:07:12,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:12,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:12,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:12,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:12,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:12,368 INFO L87 Difference]: Start difference. First operand 476 states and 489 transitions. Second operand 3 states. [2018-10-15 15:07:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:12,398 INFO L93 Difference]: Finished difference Result 126 states and 125 transitions. [2018-10-15 15:07:12,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:12,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2018-10-15 15:07:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:12,399 INFO L225 Difference]: With dead ends: 126 [2018-10-15 15:07:12,399 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:07:12,399 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 15:07:12,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:07:12,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:07:12,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:07:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:07:12,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 202 [2018-10-15 15:07:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:12,400 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:07:12,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:07:12,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:07:12,408 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:07:12 BoogieIcfgContainer [2018-10-15 15:07:12,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:07:12,409 INFO L168 Benchmark]: Toolchain (without parser) took 6478.78 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 30.9 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 136.6 MB). Peak memory consumption was 167.6 MB. Max. memory is 7.1 GB. [2018-10-15 15:07:12,410 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 15:07:12,412 INFO L168 Benchmark]: Boogie Preprocessor took 81.66 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 15:07:12,412 INFO L168 Benchmark]: RCFGBuilder took 930.26 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 15:07:12,413 INFO L168 Benchmark]: TraceAbstraction took 5460.50 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 30.9 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 94.3 MB). Peak memory consumption was 125.3 MB. Max. memory is 7.1 GB. [2018-10-15 15:07:12,419 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 81.66 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 930.26 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 5460.50 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 30.9 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 94.3 MB). Peak memory consumption was 125.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 310]: 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, 171 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 2.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1338 SDtfs, 1080 SDslu, 2529 SDs, 0 SdLazy, 322 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=770occurred in iteration=5, 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, 7 MinimizatonAttempts, 218 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1216 NumberOfCodeBlocks, 1216 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1209 ConstructedInterpolants, 0 QuantifiedInterpolants, 898913 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 91/105 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-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-07-12-438.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-07-12-438.csv Received shutdown request...