java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:34:18,300 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:34:18,302 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:34:18,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 15:34:18,365 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 15:34:18,382 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:34:18,382 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:34:18,385 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:34:18,385 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:34:18,386 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:34:18,386 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:34:18,387 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:34:18,387 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:34:18,387 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:34:18,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:34:18,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:34:18,388 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:34:18,388 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:34:18,389 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:34:18,390 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:34:18,441 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:34:18,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:34:18,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:34:18,467 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:34:18,468 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:34:18,469 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl [2018-10-15 15:34:18,469 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl' [2018-10-15 15:34:18,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:34:18,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 15:34:18,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:34:18,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:34:18,554 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:34:18,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/1) ... [2018-10-15 15:34:18,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/1) ... [2018-10-15 15:34:18,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/1) ... [2018-10-15 15:34:18,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/1) ... [2018-10-15 15:34:18,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/1) ... [2018-10-15 15:34:18,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/1) ... [2018-10-15 15:34:18,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/1) ... [2018-10-15 15:34:18,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:34:18,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:34:18,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:34:18,645 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:34:18,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-15 15:34:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:34:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:34:19,907 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:34:19,908 INFO L202 PluginConnector]: Adding new model pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:19 BoogieIcfgContainer [2018-10-15 15:34:19,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:34:19,909 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 15:34:19,909 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 15:34:19,910 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 15:34:19,914 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:19" (1/1) ... [2018-10-15 15:34:19,920 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 15:34:19,951 INFO L202 PluginConnector]: Adding new model pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:34:19 BasicIcfg [2018-10-15 15:34:19,951 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 15:34:19,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:34:19,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:34:19,956 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:34:19,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:18" (1/3) ... [2018-10-15 15:34:19,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2038c166 and model type pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:19, skipping insertion in model container [2018-10-15 15:34:19,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:19" (2/3) ... [2018-10-15 15:34:19,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2038c166 and model type pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:34:19, skipping insertion in model container [2018-10-15 15:34:19,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:34:19" (3/3) ... [2018-10-15 15:34:19,960 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bplleft_unchanged_by_heapseparator [2018-10-15 15:34:19,971 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:34:19,982 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:34:20,001 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:34:20,033 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:34:20,035 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:34:20,035 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:34:20,035 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:34:20,035 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:34:20,035 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:34:20,035 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:34:20,035 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:34:20,036 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:34:20,062 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2018-10-15 15:34:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-15 15:34:20,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:20,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:20,092 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:20,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:20,099 INFO L82 PathProgramCache]: Analyzing trace with hash 554055755, now seen corresponding path program 1 times [2018-10-15 15:34:20,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:20,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:20,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:20,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:20,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:20,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:20,808 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2018-10-15 15:34:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:20,955 INFO L93 Difference]: Finished difference Result 397 states and 412 transitions. [2018-10-15 15:34:20,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:20,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2018-10-15 15:34:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:20,988 INFO L225 Difference]: With dead ends: 397 [2018-10-15 15:34:20,988 INFO L226 Difference]: Without dead ends: 397 [2018-10-15 15:34:20,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-10-15 15:34:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 394. [2018-10-15 15:34:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-10-15 15:34:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 410 transitions. [2018-10-15 15:34:21,069 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 410 transitions. Word has length 255 [2018-10-15 15:34:21,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:21,070 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 410 transitions. [2018-10-15 15:34:21,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 410 transitions. [2018-10-15 15:34:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-15 15:34:21,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:21,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:21,078 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:21,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1330043017, now seen corresponding path program 1 times [2018-10-15 15:34:21,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:21,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:21,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:21,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:21,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:21,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:21,419 INFO L87 Difference]: Start difference. First operand 394 states and 410 transitions. Second operand 3 states. [2018-10-15 15:34:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:21,471 INFO L93 Difference]: Finished difference Result 596 states and 626 transitions. [2018-10-15 15:34:21,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:21,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2018-10-15 15:34:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:21,480 INFO L225 Difference]: With dead ends: 596 [2018-10-15 15:34:21,480 INFO L226 Difference]: Without dead ends: 596 [2018-10-15 15:34:21,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2018-10-15 15:34:21,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 593. [2018-10-15 15:34:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2018-10-15 15:34:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 624 transitions. [2018-10-15 15:34:21,514 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 624 transitions. Word has length 256 [2018-10-15 15:34:21,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:21,515 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 624 transitions. [2018-10-15 15:34:21,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 624 transitions. [2018-10-15 15:34:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-15 15:34:21,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:21,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:21,522 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:21,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:21,523 INFO L82 PathProgramCache]: Analyzing trace with hash 764670699, now seen corresponding path program 1 times [2018-10-15 15:34:21,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:21,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:21,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:21,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:21,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:21,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:21,770 INFO L87 Difference]: Start difference. First operand 593 states and 624 transitions. Second operand 3 states. [2018-10-15 15:34:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:21,826 INFO L93 Difference]: Finished difference Result 976 states and 1034 transitions. [2018-10-15 15:34:21,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:21,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 257 [2018-10-15 15:34:21,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:21,837 INFO L225 Difference]: With dead ends: 976 [2018-10-15 15:34:21,837 INFO L226 Difference]: Without dead ends: 976 [2018-10-15 15:34:21,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2018-10-15 15:34:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 973. [2018-10-15 15:34:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-15 15:34:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1032 transitions. [2018-10-15 15:34:21,875 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1032 transitions. Word has length 257 [2018-10-15 15:34:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:21,875 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1032 transitions. [2018-10-15 15:34:21,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1032 transitions. [2018-10-15 15:34:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-15 15:34:21,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:21,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:21,889 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:21,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:21,890 INFO L82 PathProgramCache]: Analyzing trace with hash 561613591, now seen corresponding path program 1 times [2018-10-15 15:34:21,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:22,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:22,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:22,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:22,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:22,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:22,138 INFO L87 Difference]: Start difference. First operand 973 states and 1032 transitions. Second operand 3 states. [2018-10-15 15:34:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:22,225 INFO L93 Difference]: Finished difference Result 1700 states and 1810 transitions. [2018-10-15 15:34:22,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:22,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2018-10-15 15:34:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:22,234 INFO L225 Difference]: With dead ends: 1700 [2018-10-15 15:34:22,234 INFO L226 Difference]: Without dead ends: 1700 [2018-10-15 15:34:22,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2018-10-15 15:34:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1697. [2018-10-15 15:34:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1697 states. [2018-10-15 15:34:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 1808 transitions. [2018-10-15 15:34:22,265 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 1808 transitions. Word has length 258 [2018-10-15 15:34:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:22,266 INFO L481 AbstractCegarLoop]: Abstraction has 1697 states and 1808 transitions. [2018-10-15 15:34:22,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 1808 transitions. [2018-10-15 15:34:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-15 15:34:22,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:22,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:22,272 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:22,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:22,272 INFO L82 PathProgramCache]: Analyzing trace with hash -133886581, now seen corresponding path program 1 times [2018-10-15 15:34:22,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:22,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:22,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:22,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:22,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:22,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:22,469 INFO L87 Difference]: Start difference. First operand 1697 states and 1808 transitions. Second operand 3 states. [2018-10-15 15:34:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:22,578 INFO L93 Difference]: Finished difference Result 3076 states and 3282 transitions. [2018-10-15 15:34:22,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:22,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2018-10-15 15:34:22,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:22,593 INFO L225 Difference]: With dead ends: 3076 [2018-10-15 15:34:22,594 INFO L226 Difference]: Without dead ends: 3076 [2018-10-15 15:34:22,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2018-10-15 15:34:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3073. [2018-10-15 15:34:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3073 states. [2018-10-15 15:34:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 3280 transitions. [2018-10-15 15:34:22,654 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 3280 transitions. Word has length 259 [2018-10-15 15:34:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:22,655 INFO L481 AbstractCegarLoop]: Abstraction has 3073 states and 3280 transitions. [2018-10-15 15:34:22,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:22,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 3280 transitions. [2018-10-15 15:34:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-15 15:34:22,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:22,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:22,657 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:22,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:22,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1843458377, now seen corresponding path program 1 times [2018-10-15 15:34:22,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:22,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:22,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:22,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:22,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:22,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:22,910 INFO L87 Difference]: Start difference. First operand 3073 states and 3280 transitions. Second operand 3 states. [2018-10-15 15:34:23,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:23,106 INFO L93 Difference]: Finished difference Result 5780 states and 6130 transitions. [2018-10-15 15:34:23,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:23,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-10-15 15:34:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:23,134 INFO L225 Difference]: With dead ends: 5780 [2018-10-15 15:34:23,135 INFO L226 Difference]: Without dead ends: 5780 [2018-10-15 15:34:23,135 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 15:34:23,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2018-10-15 15:34:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5713. [2018-10-15 15:34:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5713 states. [2018-10-15 15:34:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 6064 transitions. [2018-10-15 15:34:23,243 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 6064 transitions. Word has length 260 [2018-10-15 15:34:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:23,244 INFO L481 AbstractCegarLoop]: Abstraction has 5713 states and 6064 transitions. [2018-10-15 15:34:23,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 6064 transitions. [2018-10-15 15:34:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-15 15:34:23,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:23,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:23,247 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:23,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1918289293, now seen corresponding path program 1 times [2018-10-15 15:34:23,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:23,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:23,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:23,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:23,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:23,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:23,423 INFO L87 Difference]: Start difference. First operand 5713 states and 6064 transitions. Second operand 3 states. [2018-10-15 15:34:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:23,546 INFO L93 Difference]: Finished difference Result 8266 states and 8792 transitions. [2018-10-15 15:34:23,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:23,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2018-10-15 15:34:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:23,581 INFO L225 Difference]: With dead ends: 8266 [2018-10-15 15:34:23,581 INFO L226 Difference]: Without dead ends: 8266 [2018-10-15 15:34:23,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2018-10-15 15:34:23,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 8263. [2018-10-15 15:34:23,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8263 states. [2018-10-15 15:34:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8263 states to 8263 states and 8790 transitions. [2018-10-15 15:34:23,724 INFO L78 Accepts]: Start accepts. Automaton has 8263 states and 8790 transitions. Word has length 261 [2018-10-15 15:34:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:23,724 INFO L481 AbstractCegarLoop]: Abstraction has 8263 states and 8790 transitions. [2018-10-15 15:34:23,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 8263 states and 8790 transitions. [2018-10-15 15:34:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-15 15:34:23,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:23,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:23,727 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:23,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:23,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1551151097, now seen corresponding path program 1 times [2018-10-15 15:34:23,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:24,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:24,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:34:24,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:34:24,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:34:24,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:34:24,222 INFO L87 Difference]: Start difference. First operand 8263 states and 8790 transitions. Second operand 8 states. [2018-10-15 15:34:24,992 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:34:25,408 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:34:26,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:26,394 INFO L93 Difference]: Finished difference Result 14676 states and 15491 transitions. [2018-10-15 15:34:26,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:34:26,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2018-10-15 15:34:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:26,444 INFO L225 Difference]: With dead ends: 14676 [2018-10-15 15:34:26,445 INFO L226 Difference]: Without dead ends: 14676 [2018-10-15 15:34:26,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:34:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14676 states. [2018-10-15 15:34:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14676 to 8839. [2018-10-15 15:34:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8839 states. [2018-10-15 15:34:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8839 states to 8839 states and 9334 transitions. [2018-10-15 15:34:26,599 INFO L78 Accepts]: Start accepts. Automaton has 8839 states and 9334 transitions. Word has length 261 [2018-10-15 15:34:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:26,600 INFO L481 AbstractCegarLoop]: Abstraction has 8839 states and 9334 transitions. [2018-10-15 15:34:26,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:34:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 8839 states and 9334 transitions. [2018-10-15 15:34:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-15 15:34:26,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:26,609 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:26,609 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:26,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1338271163, now seen corresponding path program 1 times [2018-10-15 15:34:26,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:27,074 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-15 15:34:27,292 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-15 15:34:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:27,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:34:27,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:34:27,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:34:27,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:34:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:34:27,783 INFO L87 Difference]: Start difference. First operand 8839 states and 9334 transitions. Second operand 10 states. [2018-10-15 15:34:29,073 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-10-15 15:34:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:29,509 INFO L93 Difference]: Finished difference Result 7165 states and 7531 transitions. [2018-10-15 15:34:29,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 15:34:29,510 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 342 [2018-10-15 15:34:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:29,521 INFO L225 Difference]: With dead ends: 7165 [2018-10-15 15:34:29,521 INFO L226 Difference]: Without dead ends: 7021 [2018-10-15 15:34:29,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:34:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7021 states. [2018-10-15 15:34:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7021 to 4743. [2018-10-15 15:34:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4743 states. [2018-10-15 15:34:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 4982 transitions. [2018-10-15 15:34:29,592 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 4982 transitions. Word has length 342 [2018-10-15 15:34:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:29,592 INFO L481 AbstractCegarLoop]: Abstraction has 4743 states and 4982 transitions. [2018-10-15 15:34:29,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:34:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 4982 transitions. [2018-10-15 15:34:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-15 15:34:29,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:29,599 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:29,599 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:29,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:29,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1060093921, now seen corresponding path program 1 times [2018-10-15 15:34:29,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:29,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:29,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:29,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:29,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:29,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:29,997 INFO L87 Difference]: Start difference. First operand 4743 states and 4982 transitions. Second operand 3 states. [2018-10-15 15:34:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:30,050 INFO L93 Difference]: Finished difference Result 284 states and 283 transitions. [2018-10-15 15:34:30,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:30,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2018-10-15 15:34:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:30,052 INFO L225 Difference]: With dead ends: 284 [2018-10-15 15:34:30,052 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:34:30,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:34:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:34:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:34:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:34:30,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 343 [2018-10-15 15:34:30,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:30,054 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:34:30,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:30,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:34:30,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:34:30,060 INFO L202 PluginConnector]: Adding new model pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:34:30 BasicIcfg [2018-10-15 15:34:30,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:34:30,061 INFO L168 Benchmark]: Toolchain (without parser) took 11509.23 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 440.9 MB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -431.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2018-10-15 15:34:30,062 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:30,062 INFO L168 Benchmark]: Boogie Preprocessor took 91.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:30,063 INFO L168 Benchmark]: RCFGBuilder took 1263.63 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-15 15:34:30,064 INFO L168 Benchmark]: IcfgTransformer took 42.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:30,064 INFO L168 Benchmark]: TraceAbstraction took 10107.67 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 440.9 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -484.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:30,068 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 0.21 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 91.24 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 1263.63 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * IcfgTransformer took 42.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * TraceAbstraction took 10107.67 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 440.9 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -484.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 516]: 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, 292 locations, 1 error locations. SAFE Result, 10.0s OverallTime, 10 OverallIterations, 2 TraceHistogramMax, 4.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3535 SDtfs, 2667 SDslu, 4819 SDs, 0 SdLazy, 474 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8839occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 8200 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 2752 NumberOfCodeBlocks, 2752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2742 ConstructedInterpolants, 0 QuantifiedInterpolants, 3143843 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 101/111 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.6.ufo.UNBOUNDED.pals.c_23.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_15-34-30-080.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-34-30-080.csv Received shutdown request...