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-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:33:13,755 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:33:13,757 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:33:13,774 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:33:13,774 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:33:13,775 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:33:13,777 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:33:13,781 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:33:13,783 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:33:13,784 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:33:13,785 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 15:33:13,808 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 15:33:13,818 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:33:13,818 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:33:13,819 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:33:13,819 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:33:13,819 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:33:13,819 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:33:13,820 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:33:13,820 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:33:13,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:33:13,821 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:33:13,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:33:13,821 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:33:13,821 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:33:13,822 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:33:13,822 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:33:13,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:33:13,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:33:13,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:33:13,889 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:33:13,890 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:33:13,890 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl [2018-10-15 15:33:13,891 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl' [2018-10-15 15:33:13,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:33:13,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 15:33:13,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:33:13,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:33:13,955 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:33:13,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (1/1) ... [2018-10-15 15:33:13,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (1/1) ... [2018-10-15 15:33:13,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (1/1) ... [2018-10-15 15:33:13,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (1/1) ... [2018-10-15 15:33:14,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (1/1) ... [2018-10-15 15:33:14,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (1/1) ... [2018-10-15 15:33:14,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (1/1) ... [2018-10-15 15:33:14,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:33:14,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:33:14,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:33:14,015 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:33:14,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (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 15:33:14,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:33:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:33:15,045 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:33:15,046 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:15 BoogieIcfgContainer [2018-10-15 15:33:15,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:33:15,047 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 15:33:15,047 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 15:33:15,048 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 15:33:15,051 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:15" (1/1) ... [2018-10-15 15:33:15,055 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 15:33:15,077 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:33:15 BasicIcfg [2018-10-15 15:33:15,077 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 15:33:15,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:33:15,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:33:15,082 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:33:15,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:13" (1/3) ... [2018-10-15 15:33:15,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62360495 and model type pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:15, skipping insertion in model container [2018-10-15 15:33:15,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:15" (2/3) ... [2018-10-15 15:33:15,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62360495 and model type pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:33:15, skipping insertion in model container [2018-10-15 15:33:15,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:33:15" (3/3) ... [2018-10-15 15:33:15,087 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bplleft_unchanged_by_heapseparator [2018-10-15 15:33:15,098 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:33:15,108 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:33:15,125 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:33:15,156 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:33:15,157 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:33:15,157 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:33:15,157 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:33:15,157 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:33:15,157 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:33:15,158 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:33:15,158 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:33:15,158 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:33:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states. [2018-10-15 15:33:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-15 15:33:15,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:15,206 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] [2018-10-15 15:33:15,207 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:15,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:15,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1941193740, now seen corresponding path program 1 times [2018-10-15 15:33:15,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:15,687 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 15:33:15,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:15,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:15,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:15,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:15,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:15,715 INFO L87 Difference]: Start difference. First operand 213 states. Second operand 3 states. [2018-10-15 15:33:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:15,817 INFO L93 Difference]: Finished difference Result 278 states and 287 transitions. [2018-10-15 15:33:15,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:15,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-10-15 15:33:15,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:15,836 INFO L225 Difference]: With dead ends: 278 [2018-10-15 15:33:15,836 INFO L226 Difference]: Without dead ends: 278 [2018-10-15 15:33:15,838 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 15:33:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-10-15 15:33:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 275. [2018-10-15 15:33:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-15 15:33:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 285 transitions. [2018-10-15 15:33:15,900 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 285 transitions. Word has length 190 [2018-10-15 15:33:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:15,901 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 285 transitions. [2018-10-15 15:33:15,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 285 transitions. [2018-10-15 15:33:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-15 15:33:15,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:15,906 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] [2018-10-15 15:33:15,907 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:15,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:15,908 INFO L82 PathProgramCache]: Analyzing trace with hash 315274733, now seen corresponding path program 1 times [2018-10-15 15:33:15,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:16,223 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 15:33:16,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:16,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:33:16,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:33:16,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:33:16,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:33:16,227 INFO L87 Difference]: Start difference. First operand 275 states and 285 transitions. Second operand 8 states. [2018-10-15 15:33:16,596 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:33:17,056 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:33:17,518 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-15 15:33:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:17,639 INFO L93 Difference]: Finished difference Result 443 states and 462 transitions. [2018-10-15 15:33:17,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:33:17,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2018-10-15 15:33:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:17,647 INFO L225 Difference]: With dead ends: 443 [2018-10-15 15:33:17,648 INFO L226 Difference]: Without dead ends: 443 [2018-10-15 15:33:17,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:33:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-10-15 15:33:17,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 293. [2018-10-15 15:33:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-10-15 15:33:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 303 transitions. [2018-10-15 15:33:17,685 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 303 transitions. Word has length 190 [2018-10-15 15:33:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:17,687 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 303 transitions. [2018-10-15 15:33:17,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:33:17,687 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 303 transitions. [2018-10-15 15:33:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-15 15:33:17,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:17,691 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] [2018-10-15 15:33:17,692 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:17,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:17,692 INFO L82 PathProgramCache]: Analyzing trace with hash -843291360, now seen corresponding path program 1 times [2018-10-15 15:33:17,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:17,922 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 15:33:17,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:17,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:17,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:17,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:17,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:17,925 INFO L87 Difference]: Start difference. First operand 293 states and 303 transitions. Second operand 3 states. [2018-10-15 15:33:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:17,981 INFO L93 Difference]: Finished difference Result 369 states and 383 transitions. [2018-10-15 15:33:17,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:17,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-10-15 15:33:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:17,986 INFO L225 Difference]: With dead ends: 369 [2018-10-15 15:33:17,986 INFO L226 Difference]: Without dead ends: 369 [2018-10-15 15:33:17,987 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 15:33:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-10-15 15:33:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2018-10-15 15:33:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-15 15:33:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 381 transitions. [2018-10-15 15:33:18,001 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 381 transitions. Word has length 191 [2018-10-15 15:33:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:18,001 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 381 transitions. [2018-10-15 15:33:18,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 381 transitions. [2018-10-15 15:33:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-15 15:33:18,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:18,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:18,008 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:18,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1028544617, now seen corresponding path program 1 times [2018-10-15 15:33:18,010 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:33:18,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:18,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:18,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:18,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:18,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:18,256 INFO L87 Difference]: Start difference. First operand 367 states and 381 transitions. Second operand 3 states. [2018-10-15 15:33:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:18,346 INFO L93 Difference]: Finished difference Result 587 states and 612 transitions. [2018-10-15 15:33:18,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:18,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2018-10-15 15:33:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:18,349 INFO L225 Difference]: With dead ends: 587 [2018-10-15 15:33:18,350 INFO L226 Difference]: Without dead ends: 587 [2018-10-15 15:33:18,350 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 15:33:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-10-15 15:33:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 572. [2018-10-15 15:33:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2018-10-15 15:33:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 598 transitions. [2018-10-15 15:33:18,366 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 598 transitions. Word has length 247 [2018-10-15 15:33:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:18,369 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 598 transitions. [2018-10-15 15:33:18,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 598 transitions. [2018-10-15 15:33:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-15 15:33:18,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:18,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:18,381 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:18,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:18,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1853543906, now seen corresponding path program 1 times [2018-10-15 15:33:18,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-15 15:33:18,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:18,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:18,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:18,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:18,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:18,587 INFO L87 Difference]: Start difference. First operand 572 states and 598 transitions. Second operand 3 states. [2018-10-15 15:33:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:18,641 INFO L93 Difference]: Finished difference Result 575 states and 597 transitions. [2018-10-15 15:33:18,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:18,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2018-10-15 15:33:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:18,648 INFO L225 Difference]: With dead ends: 575 [2018-10-15 15:33:18,648 INFO L226 Difference]: Without dead ends: 575 [2018-10-15 15:33:18,649 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 15:33:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2018-10-15 15:33:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 572. [2018-10-15 15:33:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2018-10-15 15:33:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 595 transitions. [2018-10-15 15:33:18,681 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 595 transitions. Word has length 248 [2018-10-15 15:33:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:18,682 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 595 transitions. [2018-10-15 15:33:18,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 595 transitions. [2018-10-15 15:33:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-15 15:33:18,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:18,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:18,686 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:18,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:18,686 INFO L82 PathProgramCache]: Analyzing trace with hash 16186580, now seen corresponding path program 2 times [2018-10-15 15:33:18,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:33:18,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:18,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:18,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:18,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:18,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:18,863 INFO L87 Difference]: Start difference. First operand 572 states and 595 transitions. Second operand 3 states. [2018-10-15 15:33:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:18,947 INFO L93 Difference]: Finished difference Result 988 states and 1028 transitions. [2018-10-15 15:33:18,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:18,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2018-10-15 15:33:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:18,956 INFO L225 Difference]: With dead ends: 988 [2018-10-15 15:33:18,957 INFO L226 Difference]: Without dead ends: 988 [2018-10-15 15:33:18,957 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 15:33:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-15 15:33:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 961. [2018-10-15 15:33:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2018-10-15 15:33:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1002 transitions. [2018-10-15 15:33:18,981 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1002 transitions. Word has length 248 [2018-10-15 15:33:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:18,981 INFO L481 AbstractCegarLoop]: Abstraction has 961 states and 1002 transitions. [2018-10-15 15:33:18,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1002 transitions. [2018-10-15 15:33:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-15 15:33:18,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:18,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:18,985 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:18,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:18,985 INFO L82 PathProgramCache]: Analyzing trace with hash 260136567, now seen corresponding path program 1 times [2018-10-15 15:33:18,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:33:19,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:19,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:19,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:19,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:19,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:19,198 INFO L87 Difference]: Start difference. First operand 961 states and 1002 transitions. Second operand 3 states. [2018-10-15 15:33:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:19,304 INFO L93 Difference]: Finished difference Result 1748 states and 1818 transitions. [2018-10-15 15:33:19,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:19,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2018-10-15 15:33:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:19,314 INFO L225 Difference]: With dead ends: 1748 [2018-10-15 15:33:19,315 INFO L226 Difference]: Without dead ends: 1748 [2018-10-15 15:33:19,315 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 15:33:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2018-10-15 15:33:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1697. [2018-10-15 15:33:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1697 states. [2018-10-15 15:33:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 1768 transitions. [2018-10-15 15:33:19,344 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 1768 transitions. Word has length 249 [2018-10-15 15:33:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:19,345 INFO L481 AbstractCegarLoop]: Abstraction has 1697 states and 1768 transitions. [2018-10-15 15:33:19,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 1768 transitions. [2018-10-15 15:33:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-15 15:33:19,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:19,348 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:33:19,348 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:19,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1358745090, now seen corresponding path program 1 times [2018-10-15 15:33:19,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-15 15:33:19,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:19,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:19,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:19,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:19,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:19,507 INFO L87 Difference]: Start difference. First operand 1697 states and 1768 transitions. Second operand 3 states. [2018-10-15 15:33:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:19,585 INFO L93 Difference]: Finished difference Result 922 states and 950 transitions. [2018-10-15 15:33:19,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:19,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2018-10-15 15:33:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:19,590 INFO L225 Difference]: With dead ends: 922 [2018-10-15 15:33:19,590 INFO L226 Difference]: Without dead ends: 922 [2018-10-15 15:33:19,590 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 15:33:19,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2018-10-15 15:33:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 919. [2018-10-15 15:33:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2018-10-15 15:33:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 948 transitions. [2018-10-15 15:33:19,607 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 948 transitions. Word has length 250 [2018-10-15 15:33:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:19,607 INFO L481 AbstractCegarLoop]: Abstraction has 919 states and 948 transitions. [2018-10-15 15:33:19,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 948 transitions. [2018-10-15 15:33:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-15 15:33:19,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:19,610 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:33:19,610 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:19,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash -830158348, now seen corresponding path program 2 times [2018-10-15 15:33:19,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:20,024 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-15 15:33:20,267 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-15 15:33:20,715 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-10-15 15:33:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:33:21,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:33:21,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:33:21,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:33:21,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:33:21,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:33:21,008 INFO L87 Difference]: Start difference. First operand 919 states and 948 transitions. Second operand 10 states. [2018-10-15 15:33:22,799 WARN L179 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-10-15 15:33:23,110 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-10-15 15:33:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:23,524 INFO L93 Difference]: Finished difference Result 286 states and 285 transitions. [2018-10-15 15:33:23,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 15:33:23,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 250 [2018-10-15 15:33:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:23,525 INFO L225 Difference]: With dead ends: 286 [2018-10-15 15:33:23,525 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:33:23,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:33:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:33:23,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:33:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:33:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:33:23,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 250 [2018-10-15 15:33:23,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:23,528 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:33:23,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:33:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:33:23,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:33:23,534 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:33:23 BasicIcfg [2018-10-15 15:33:23,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:33:23,535 INFO L168 Benchmark]: Toolchain (without parser) took 9581.51 ms. Allocated memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: 120.6 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -133.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:33:23,536 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:33:23,536 INFO L168 Benchmark]: Boogie Preprocessor took 59.12 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:33:23,537 INFO L168 Benchmark]: RCFGBuilder took 1031.94 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-15 15:33:23,539 INFO L168 Benchmark]: IcfgTransformer took 29.89 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:33:23,539 INFO L168 Benchmark]: TraceAbstraction took 8455.80 ms. Allocated memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: 120.6 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -175.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:33:23,545 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 0.14 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.12 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1031.94 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * IcfgTransformer took 29.89 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * TraceAbstraction took 8455.80 ms. Allocated memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: 120.6 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -175.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 386]: 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, 213 locations, 1 error locations. SAFE Result, 8.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 4.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2208 SDtfs, 1206 SDslu, 3455 SDs, 0 SdLazy, 324 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1697occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 254 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 2063 NumberOfCodeBlocks, 2063 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2054 ConstructedInterpolants, 0 QuantifiedInterpolants, 1734031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 254/264 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.4.1.ufo.UNBOUNDED.pals.c_10.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_15-33-23-560.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c_10.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-33-23-560.csv Received shutdown request...