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/20181015-LoopsPathprograms/half_2_true-unreach-call_true-termination.i_3.bpl
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This is Ultimate 0.1.23-2d08e6e
[2018-10-15 13:04:06,774 INFO L170 SettingsManager]: Resetting all preferences to default values...
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[2018-10-15 13:04:06,822 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-15 13:04:06,823 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2018-10-15 13:04:06,830 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 13:04:06,843 INFO L110 SettingsManager]: Loading preferences was successful
[2018-10-15 13:04:06,844 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-15 13:04:06,845 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-10-15 13:04:06,848 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain
[2018-10-15 13:04:06,849 INFO L133 SettingsManager]: * Parallel states before merging=1
[2018-10-15 13:04:06,849 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2018-10-15 13:04:06,850 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-15 13:04:06,850 INFO L133 SettingsManager]: * Size of a code block=SingleStatement
[2018-10-15 13:04:06,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-15 13:04:06,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation
[2018-10-15 13:04:06,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-15 13:04:06,851 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan
[2018-10-15 13:04:06,851 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
[2018-10-15 13:04:06,852 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2018-10-15 13:04:06,852 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR
[2018-10-15 13:04:06,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-15 13:04:06,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-15 13:04:06,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-15 13:04:06,932 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2018-10-15 13:04:06,933 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized
[2018-10-15 13:04:06,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/half_2_true-unreach-call_true-termination.i_3.bpl
[2018-10-15 13:04:06,934 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/half_2_true-unreach-call_true-termination.i_3.bpl'
[2018-10-15 13:04:06,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-15 13:04:06,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-10-15 13:04:06,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-15 13:04:06,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-15 13:04:06,991 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-10-15 13:04:07,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/1) ...
[2018-10-15 13:04:07,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/1) ...
[2018-10-15 13:04:07,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/1) ...
[2018-10-15 13:04:07,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/1) ...
[2018-10-15 13:04:07,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/1) ...
[2018-10-15 13:04:07,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/1) ...
[2018-10-15 13:04:07,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/1) ...
[2018-10-15 13:04:07,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-15 13:04:07,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-15 13:04:07,044 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-10-15 13:04:07,044 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-10-15 13:04:07,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2018-10-15 13:04:07,120 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2018-10-15 13:04:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-15 13:04:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-15 13:04:07,483 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-15 13:04:07,484 INFO L202 PluginConnector]: Adding new model half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:07 BoogieIcfgContainer
[2018-10-15 13:04:07,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-15 13:04:07,485 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2018-10-15 13:04:07,485 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2018-10-15 13:04:07,486 INFO L276 PluginConnector]: IcfgTransformer initialized
[2018-10-15 13:04:07,490 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:07" (1/1) ...
[2018-10-15 13:04:07,498 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg!
[2018-10-15 13:04:07,529 INFO L202 PluginConnector]: Adding new model half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 01:04:07 BasicIcfg
[2018-10-15 13:04:07,529 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2018-10-15 13:04:07,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-15 13:04:07,531 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-10-15 13:04:07,539 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-10-15 13:04:07,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:04:06" (1/3) ...
[2018-10-15 13:04:07,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee5e90a and model type half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:07, skipping insertion in model container
[2018-10-15 13:04:07,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:07" (2/3) ...
[2018-10-15 13:04:07,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee5e90a and model type half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:04:07, skipping insertion in model container
[2018-10-15 13:04:07,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 01:04:07" (3/3) ...
[2018-10-15 13:04:07,547 INFO L112 eAbstractionObserver]: Analyzing ICFG half_2_true-unreach-call_true-termination.i_3.bplleft_unchanged_by_heapseparator
[2018-10-15 13:04:07,568 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION
[2018-10-15 13:04:07,576 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-15 13:04:07,596 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-15 13:04:07,624 INFO L133 ementStrategyFactory]: Using default assertion order modulation
[2018-10-15 13:04:07,627 INFO L382 AbstractCegarLoop]: Interprodecural is true
[2018-10-15 13:04:07,627 INFO L383 AbstractCegarLoop]: Hoare is false
[2018-10-15 13:04:07,628 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation
[2018-10-15 13:04:07,628 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-15 13:04:07,628 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-15 13:04:07,628 INFO L387 AbstractCegarLoop]: Difference is false
[2018-10-15 13:04:07,628 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-15 13:04:07,629 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-15 13:04:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states.
[2018-10-15 13:04:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-15 13:04:07,650 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-15 13:04:07,651 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-15 13:04:07,652 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-10-15 13:04:07,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-15 13:04:07,658 INFO L82 PathProgramCache]: Analyzing trace with hash 632011659, now seen corresponding path program 1 times
[2018-10-15 13:04:07,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy
[2018-10-15 13:04:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-15 13:04:07,904 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 13:04:07,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-15 13:04:07,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-10-15 13:04:07,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-15 13:04:07,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-15 13:04:07,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-10-15 13:04:07,925 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states.
[2018-10-15 13:04:08,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-15 13:04:08,116 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions.
[2018-10-15 13:04:08,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-10-15 13:04:08,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19
[2018-10-15 13:04:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-15 13:04:08,132 INFO L225 Difference]: With dead ends: 31
[2018-10-15 13:04:08,132 INFO L226 Difference]: Without dead ends: 29
[2018-10-15 13:04:08,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2018-10-15 13:04:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-15 13:04:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25.
[2018-10-15 13:04:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2018-10-15 13:04:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions.
[2018-10-15 13:04:08,170 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19
[2018-10-15 13:04:08,170 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-15 13:04:08,170 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions.
[2018-10-15 13:04:08,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-15 13:04:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions.
[2018-10-15 13:04:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2018-10-15 13:04:08,172 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-15 13:04:08,172 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]
[2018-10-15 13:04:08,172 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-10-15 13:04:08,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-15 13:04:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash -762715277, now seen corresponding path program 1 times
[2018-10-15 13:04:08,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy
[2018-10-15 13:04:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-15 13:04:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-15 13:04:08,685 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-10-15 13:04:08,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2018-10-15 13:04:08,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-15 13:04:08,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-15 13:04:08,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2018-10-15 13:04:08,689 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 11 states.
[2018-10-15 13:04:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-15 13:04:09,236 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions.
[2018-10-15 13:04:09,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2018-10-15 13:04:09,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24
[2018-10-15 13:04:09,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-15 13:04:09,238 INFO L225 Difference]: With dead ends: 38
[2018-10-15 13:04:09,238 INFO L226 Difference]: Without dead ends: 32
[2018-10-15 13:04:09,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2018-10-15 13:04:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2018-10-15 13:04:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2018-10-15 13:04:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-15 13:04:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions.
[2018-10-15 13:04:09,245 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 24
[2018-10-15 13:04:09,245 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-15 13:04:09,246 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions.
[2018-10-15 13:04:09,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-15 13:04:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions.
[2018-10-15 13:04:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2018-10-15 13:04:09,247 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-15 13:04:09,247 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-15 13:04:09,248 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-10-15 13:04:09,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-15 13:04:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1722782581, now seen corresponding path program 2 times
[2018-10-15 13:04:09,249 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy
[2018-10-15 13:04:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-15 13:04:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-15 13:04:09,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-10-15 13:04:09,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2018-10-15 13:04:09,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-10-15 13:04:09,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-10-15 13:04:09,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2018-10-15 13:04:09,744 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 12 states.
[2018-10-15 13:04:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-15 13:04:10,173 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions.
[2018-10-15 13:04:10,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2018-10-15 13:04:10,173 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29
[2018-10-15 13:04:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-15 13:04:10,174 INFO L225 Difference]: With dead ends: 28
[2018-10-15 13:04:10,174 INFO L226 Difference]: Without dead ends: 0
[2018-10-15 13:04:10,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506
[2018-10-15 13:04:10,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2018-10-15 13:04:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2018-10-15 13:04:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2018-10-15 13:04:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2018-10-15 13:04:10,177 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29
[2018-10-15 13:04:10,177 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-15 13:04:10,177 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2018-10-15 13:04:10,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-10-15 13:04:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2018-10-15 13:04:10,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2018-10-15 13:04:10,183 INFO L202 PluginConnector]: Adding new model half_2_true-unreach-call_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:04:10 BasicIcfg
[2018-10-15 13:04:10,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-15 13:04:10,184 INFO L168 Benchmark]: Toolchain (without parser) took 3195.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 137.5 MB). Peak memory consumption was 137.5 MB. Max. memory is 7.1 GB.
[2018-10-15 13:04:10,186 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-15 13:04:10,187 INFO L168 Benchmark]: Boogie Preprocessor took 51.73 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 13:04:10,188 INFO L168 Benchmark]: RCFGBuilder took 440.75 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
[2018-10-15 13:04:10,189 INFO L168 Benchmark]: IcfgTransformer took 44.85 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 13:04:10,189 INFO L168 Benchmark]: TraceAbstraction took 2653.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB.
[2018-10-15 13:04:10,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
* Boogie Preprocessor took 51.73 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 440.75 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
* IcfgTransformer took 44.85 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 2653.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 50]: 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, 26 locations, 1 error locations. SAFE Result, 2.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 56 SDslu, 222 SDs, 0 SdLazy, 232 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 4942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/8 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/half_2_true-unreach-call_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_13-04-10-205.csv
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half_2_true-unreach-call_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_13-04-10-205.csv
Received shutdown request...