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.3.2.ufo.UNBOUNDED.pals.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:06:57,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:06:57,473 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:06:57,485 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:06:57,485 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:06:57,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:06:57,490 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:06:57,492 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:06:57,495 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:06:57,497 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:06:57,501 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-15 15:06:57,501 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-15 15:06:57,504 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-15 15:06:57,505 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-15 15:06:57,509 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-15 15:06:57,510 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-15 15:06:57,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-15 15:06:57,521 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-15 15:06:57,526 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-15 15:06:57,528 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-15 15:06:57,532 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-15 15:06:57,533 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-15 15:06:57,536 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-15 15:06:57,550 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 15:06:57,561 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:06:57,562 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:06:57,562 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:06:57,563 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:06:57,563 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:06:57,563 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:06:57,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:06:57,564 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:06:57,564 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:06:57,564 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:06:57,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:06:57,565 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:06:57,565 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:06:57,566 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:06:57,566 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:06:57,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:06:57,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:06:57,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:06:57,673 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:06:57,673 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:06:57,674 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl [2018-10-15 15:06:57,674 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl' [2018-10-15 15:06:57,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:06:57,756 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:06:57,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:06:57,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:06:57,758 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:06:57,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (1/1) ... [2018-10-15 15:06:57,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (1/1) ... [2018-10-15 15:06:57,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (1/1) ... [2018-10-15 15:06:57,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (1/1) ... [2018-10-15 15:06:57,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (1/1) ... [2018-10-15 15:06:57,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (1/1) ... [2018-10-15 15:06:57,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (1/1) ... [2018-10-15 15:06:57,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:06:57,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:06:57,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:06:57,821 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:06:57,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (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 15:06:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:06:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:06:58,771 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:06:58,772 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:58 BoogieIcfgContainer [2018-10-15 15:06:58,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:06:58,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:06:58,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:06:58,777 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:06:58,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:57" (1/2) ... [2018-10-15 15:06:58,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8417c0 and model type pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:58, skipping insertion in model container [2018-10-15 15:06:58,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:58" (2/2) ... [2018-10-15 15:06:58,780 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl [2018-10-15 15:06:58,790 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:06:58,801 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:06:58,819 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:06:58,849 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:06:58,850 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:06:58,850 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:06:58,850 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:06:58,850 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:06:58,850 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:06:58,850 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:06:58,851 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:06:58,851 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:06:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2018-10-15 15:06:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-15 15:06:58,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:58,894 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] [2018-10-15 15:06:58,895 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:58,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash -700097499, now seen corresponding path program 1 times [2018-10-15 15:06:58,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:59,298 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 15:06:59,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:59,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:06:59,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:06:59,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:06:59,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:59,328 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2018-10-15 15:06:59,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:59,427 INFO L93 Difference]: Finished difference Result 223 states and 230 transitions. [2018-10-15 15:06:59,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:06:59,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2018-10-15 15:06:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:59,450 INFO L225 Difference]: With dead ends: 223 [2018-10-15 15:06:59,450 INFO L226 Difference]: Without dead ends: 223 [2018-10-15 15:06:59,454 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 15:06:59,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-15 15:06:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 220. [2018-10-15 15:06:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-15 15:06:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 228 transitions. [2018-10-15 15:06:59,516 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 228 transitions. Word has length 149 [2018-10-15 15:06:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:59,517 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 228 transitions. [2018-10-15 15:06:59,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:06:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 228 transitions. [2018-10-15 15:06:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-15 15:06:59,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:59,524 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] [2018-10-15 15:06:59,525 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:59,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:59,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1210778036, now seen corresponding path program 1 times [2018-10-15 15:06:59,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:59,827 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 15:06:59,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:59,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:06:59,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:06:59,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:06:59,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:06:59,833 INFO L87 Difference]: Start difference. First operand 220 states and 228 transitions. Second operand 8 states. [2018-10-15 15:07:00,615 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-15 15:07:00,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:00,780 INFO L93 Difference]: Finished difference Result 362 states and 377 transitions. [2018-10-15 15:07:00,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:07:00,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2018-10-15 15:07:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:00,787 INFO L225 Difference]: With dead ends: 362 [2018-10-15 15:07:00,787 INFO L226 Difference]: Without dead ends: 362 [2018-10-15 15:07:00,789 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 15:07:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-10-15 15:07:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 238. [2018-10-15 15:07:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-15 15:07:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 246 transitions. [2018-10-15 15:07:00,810 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 246 transitions. Word has length 151 [2018-10-15 15:07:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:00,811 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 246 transitions. [2018-10-15 15:07:00,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:07:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 246 transitions. [2018-10-15 15:07:00,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-15 15:07:00,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:00,815 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 15:07:00,815 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:00,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:00,816 INFO L82 PathProgramCache]: Analyzing trace with hash -393531199, now seen corresponding path program 1 times [2018-10-15 15:07:00,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:01,015 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 15:07:01,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:01,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:01,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:01,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:01,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:01,017 INFO L87 Difference]: Start difference. First operand 238 states and 246 transitions. Second operand 3 states. [2018-10-15 15:07:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:01,140 INFO L93 Difference]: Finished difference Result 340 states and 353 transitions. [2018-10-15 15:07:01,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:01,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2018-10-15 15:07:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:01,146 INFO L225 Difference]: With dead ends: 340 [2018-10-15 15:07:01,147 INFO L226 Difference]: Without dead ends: 340 [2018-10-15 15:07:01,150 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 15:07:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-15 15:07:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2018-10-15 15:07:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-10-15 15:07:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 349 transitions. [2018-10-15 15:07:01,189 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 349 transitions. Word has length 152 [2018-10-15 15:07:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:01,190 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 349 transitions. [2018-10-15 15:07:01,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 349 transitions. [2018-10-15 15:07:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-15 15:07:01,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:01,201 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 15:07:01,202 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:01,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:01,202 INFO L82 PathProgramCache]: Analyzing trace with hash -767548229, now seen corresponding path program 1 times [2018-10-15 15:07:01,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:01,381 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 15:07:01,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:01,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:01,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:01,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:01,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:01,383 INFO L87 Difference]: Start difference. First operand 336 states and 349 transitions. Second operand 3 states. [2018-10-15 15:07:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:01,456 INFO L93 Difference]: Finished difference Result 461 states and 480 transitions. [2018-10-15 15:07:01,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:01,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-10-15 15:07:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:01,460 INFO L225 Difference]: With dead ends: 461 [2018-10-15 15:07:01,460 INFO L226 Difference]: Without dead ends: 461 [2018-10-15 15:07:01,461 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 15:07:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-10-15 15:07:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 458. [2018-10-15 15:07:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2018-10-15 15:07:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 478 transitions. [2018-10-15 15:07:01,475 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 478 transitions. Word has length 156 [2018-10-15 15:07:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:01,476 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 478 transitions. [2018-10-15 15:07:01,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:01,476 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 478 transitions. [2018-10-15 15:07:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-15 15:07:01,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:01,479 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] [2018-10-15 15:07:01,480 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:01,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:01,480 INFO L82 PathProgramCache]: Analyzing trace with hash -295433431, now seen corresponding path program 1 times [2018-10-15 15:07:01,482 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:01,691 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 15:07:01,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:01,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:01,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:01,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:01,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:01,693 INFO L87 Difference]: Start difference. First operand 458 states and 478 transitions. Second operand 3 states. [2018-10-15 15:07:01,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:01,732 INFO L93 Difference]: Finished difference Result 789 states and 823 transitions. [2018-10-15 15:07:01,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:01,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2018-10-15 15:07:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:01,741 INFO L225 Difference]: With dead ends: 789 [2018-10-15 15:07:01,742 INFO L226 Difference]: Without dead ends: 789 [2018-10-15 15:07:01,742 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 15:07:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2018-10-15 15:07:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 762. [2018-10-15 15:07:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-15 15:07:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 797 transitions. [2018-10-15 15:07:01,768 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 797 transitions. Word has length 200 [2018-10-15 15:07:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:01,769 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 797 transitions. [2018-10-15 15:07:01,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 797 transitions. [2018-10-15 15:07:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-15 15:07:01,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:01,776 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] [2018-10-15 15:07:01,776 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:01,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:01,776 INFO L82 PathProgramCache]: Analyzing trace with hash 237112483, now seen corresponding path program 1 times [2018-10-15 15:07:01,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-15 15:07:01,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:01,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:01,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:01,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:01,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:01,939 INFO L87 Difference]: Start difference. First operand 762 states and 797 transitions. Second operand 3 states. [2018-10-15 15:07:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:01,994 INFO L93 Difference]: Finished difference Result 765 states and 793 transitions. [2018-10-15 15:07:01,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:01,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-10-15 15:07:01,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:02,000 INFO L225 Difference]: With dead ends: 765 [2018-10-15 15:07:02,000 INFO L226 Difference]: Without dead ends: 765 [2018-10-15 15:07:02,001 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 15:07:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2018-10-15 15:07:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 762. [2018-10-15 15:07:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-15 15:07:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 791 transitions. [2018-10-15 15:07:02,018 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 791 transitions. Word has length 201 [2018-10-15 15:07:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:02,019 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 791 transitions. [2018-10-15 15:07:02,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 791 transitions. [2018-10-15 15:07:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-15 15:07:02,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:02,023 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] [2018-10-15 15:07:02,023 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:02,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:02,024 INFO L82 PathProgramCache]: Analyzing trace with hash -856790783, now seen corresponding path program 2 times [2018-10-15 15:07:02,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:07:02,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:07:02,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:07:02,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:07:02,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:07:02,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:07:02,585 INFO L87 Difference]: Start difference. First operand 762 states and 791 transitions. Second operand 10 states. [2018-10-15 15:07:03,668 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-10-15 15:07:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:04,070 INFO L93 Difference]: Finished difference Result 715 states and 735 transitions. [2018-10-15 15:07:04,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-15 15:07:04,071 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2018-10-15 15:07:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:04,074 INFO L225 Difference]: With dead ends: 715 [2018-10-15 15:07:04,075 INFO L226 Difference]: Without dead ends: 705 [2018-10-15 15:07:04,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2018-10-15 15:07:04,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2018-10-15 15:07:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 532. [2018-10-15 15:07:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-15 15:07:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 547 transitions. [2018-10-15 15:07:04,086 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 547 transitions. Word has length 201 [2018-10-15 15:07:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:04,087 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 547 transitions. [2018-10-15 15:07:04,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:07:04,087 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 547 transitions. [2018-10-15 15:07:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-15 15:07:04,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:04,090 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-15 15:07:04,091 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:04,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:04,091 INFO L82 PathProgramCache]: Analyzing trace with hash -122892516, now seen corresponding path program 3 times [2018-10-15 15:07:04,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-15 15:07:04,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:04,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:04,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:04,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:04,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:04,201 INFO L87 Difference]: Start difference. First operand 532 states and 547 transitions. Second operand 3 states. [2018-10-15 15:07:04,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:04,209 INFO L93 Difference]: Finished difference Result 155 states and 154 transitions. [2018-10-15 15:07:04,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:04,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2018-10-15 15:07:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:04,211 INFO L225 Difference]: With dead ends: 155 [2018-10-15 15:07:04,212 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:07:04,212 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 15:07:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:07:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:07:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:07:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:07:04,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 247 [2018-10-15 15:07:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:04,214 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:07:04,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:07:04,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:07:04,220 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:07:04 BoogieIcfgContainer [2018-10-15 15:07:04,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:07:04,222 INFO L168 Benchmark]: Toolchain (without parser) took 6466.44 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 187.3 MB). Peak memory consumption was 236.0 MB. Max. memory is 7.1 GB. [2018-10-15 15:07:04,223 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:07:04,225 INFO L168 Benchmark]: Boogie Preprocessor took 63.03 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 15:07:04,225 INFO L168 Benchmark]: RCFGBuilder took 951.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-15 15:07:04,231 INFO L168 Benchmark]: TraceAbstraction took 5447.71 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 145.0 MB). Peak memory consumption was 193.7 MB. Max. memory is 7.1 GB. [2018-10-15 15:07:04,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 951.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5447.71 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 145.0 MB). Peak memory consumption was 193.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 308]: 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, 170 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 2.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1530 SDtfs, 1129 SDslu, 2658 SDs, 0 SdLazy, 324 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=762occurred 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, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1457 NumberOfCodeBlocks, 1457 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1449 ConstructedInterpolants, 0 QuantifiedInterpolants, 988503 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 213/219 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.3.2.ufo.UNBOUNDED.pals.c_11.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-07-04-255.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c_11.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-07-04-255.csv Received shutdown request...